Saturated compounds having and cho groups bound to acyclic carbon atoms or to hydrogen (C07C47/02)

C   Chemistry; metallurgy(315635)
C07   Organic chemistry(61593)
C07C47        Compounds having ; cho groups(815)
C07C47/02                     Saturated compounds having ; cho groups bound to acyclic carbon atoms or to hydrogen(130)
ethod of obtaining aldehydees by hydroformation with modification of ligands by acetalization // 2628609
FIELD: chemistry.SUBSTANCE: method comprises the following steps: - autoclaving ethanol (A), rhodium dicarbonyl rhodium (acac) acetylacetonate (CO)2 (B), with a B:A ratio of 1:6000 to 1:10000 in weight fractions, a ligand containing an aromatic phosphine residue and at least two hydroxyl groups (C) at a B:B ratio of 1:1 to 5:1 in mole fractions, a linear olefin of the C4-C20, (D) at a ratio of "D:B" from 500:1 to 5000:1 in mole fractions and cation exchanger in acid form (D), taken in 10-20-fold excess relative to the ligand (B); - autoclaving of synthesis gas pressure (CO/H2=1:1) 0.1-10 MPa, heating the mixture to 30-120°C, the synthesis being carried out with stirring with a magnetic stirrer at 500-1000 rpm for 3-10 hours to form an aldehyde and a rhodium catalytic complex with a bulky ligand; - separating the cation exchanger by filtration and separating the rhodium catalytic complex with the bulky ligand by membrane nanofiltration from a mixture of aldehyde with a solvent, followed by evaporation of the solvent. Also, the invention relates to a process of separating rhodium complex of a ligand (C) of the rhodium complex catalyst a bulky ligand obtained in the hydroformylation process, consisting in expansion volume ligand mineral acids in the weight ratio acid: ligand = 1:19.EFFECT: bulk ligand in the hydroformylation process allows for efficient separation of the catalyst complex from the product - aldehyde.5 cl, 3 ex

ethod for selective hydrogenation of unsaturated aldehydes // 2626958
FIELD: chemistry.SUBSTANCE: invention relates to a method for producing saturated aldehydes by contacting a liquid organic feed containing unsaturated aldehydes with hydrogen or hydrogen-containing gas in presence of crustal catalyst comprising palladium particles of not more than 6 nm in size, applied in form of a layer not thicker than 150 microns on exterior surface of porous alumina carrier granules. Herewith the carrier has not less than 60% of pores with a diameter of 5 to 50 nm, and the hydrogenation is carried out at a liquid feed rate of 1-4 h-1.EFFECT: producing target products with high selectivity at high process efficiency and feedstock conversion.25 cl, 8 dwg, 6 tbl, 6 ex
Two-step process of obtaining the propionic aldehyde // 2619951
FIELD: chemistry.SUBSTANCE: method includes the step of hydroformylating ethylene with carbon monoxide at elevated temperature and pressure in the presence of a metal rhodium catalyst on a carrier. Prior to the hydroformylation step, a hydrogenation stage of carbon dioxide in the synthesis gas is preliminarily carried out in the presence of a catalyst containing metallic cobalt on a carrier in the form of an organometallic MIL-53 (Al) frame structure obtained in the course of microwave activated synthesis, and the process for producing propionaldehyde is carried out in flow two-way reactor at a pressure of 20-40 atm by contacting a stationary catalyst bed located on the upper shelf of the reactor and heated to a temperature of 500°C, with feed mixture H2 and CO2 at a gas feed rate of 500-1000 h-1 followed by mixing of the formed and heated to a temperature of 500-520°C of reaction gases containing a mixture of CO-H2-CO2, with cold ethylene, fed into the inter-bed space, and the resulting gas mixture at a ratio of CO:H2:C2H4=1:(1÷2):1 is fed to the lower shelf of the reactor and contacted at a temperature of 170-230°C with a hydroformylation catalyst present therein, presented by rhodium in the form of the organometallic framework structure MIL-53 (Al), obtained during autogenous hydrothermal synthesis.EFFECT: method allows to increase the selectivity of the formation of the target product, and the yield, ensuring the utilisation of greenhouse gas.3 cl, 2 dwg, 1 tbl, 8 ex

Improved method for hydroformylation // 2606629
FIELD: chemistry.SUBSTANCE: present invention relates to at least a two-step method of exothermic hydroformylation. Method includes following stages: (a) reacting hydroformylation reactants exothermically in a first reaction stage in a fluid reaction mixture to form a reaction product; (b) transferring a process stream of fluid reaction mixture from a reaction stage to one or more later and separate reaction stages for further exothermic, product-forming reaction and then to product recovery unit operations; (c) transferring a heat transfer stream of reaction mixture from a reaction stage to an external heat exchanger where it is cooled and dividing cooled stream into multiple cooled reaction mixture streams; (d) transferring a cooled reaction mixture stream from step (c) back into same reaction stage from which it was removed to cool reaction mixture in that reaction stage; (e) transferring at least one cooled reaction mixture stream from step (c) into and through heat exchange means that cool a different reaction stage, and returning it to same reaction stage from which it is removed; and (f) separating and recovering a reaction product from reaction mixture and optionally recycling at least some reaction mixture components to reaction mixture in a reaction stage.EFFECT: disclosed method enables to optimise control of process temperature and minimise pollution of reaction mixture due to cooling medium leakage.15 cl, 4 dwg, 1 ex

Reduced contamination during hydroformylation processes by adding water // 2601416
FIELD: chemistry.SUBSTANCE: present invention relates to a method of extracting for removal of metal salts from organic hydroformylation reaction fluid medium ("HRF") before the HRF return to the hydroformylation process reaction zone, herewith the HRF includes organophosphorus ligand and metal-complex organophosphorus ligand. Extraction method involves the step of the HRF contact with an aqueous buffer solution in the area of hydroformylation process buffer extraction, and the reaction zone is located upstream the buffer extraction zone. Herewith this method also includes the stage of the HRF contact with water ("added water") added in addition to the water present in the aqueous buffer solution performed (A) in the zone for extraction of salt, downstream the zone for extraction of buffer, and (B) before the HRF return to the reaction zone.EFFECT: proposed method allows to stabilize the organophosphorus ligand against hydrolytic dehydration, and the complex of metal-organophosphorus ligand - against degradation and deactivation.9 cl, 3 dwg, 3 tbl, 9 ex

Improved method of oxosynthesis and method for production of synthesis gas from waste oils // 2598460
FIELD: technological processes.SUBSTANCE: invention relates to improved method for biosynthesis with recirculation of converted waste oils. Method involves hydroformylation of olefin with synthesis gas in reactor with obtaining of oxosynthesis product and by-products, oil wastes, characterized by lower or higher boiling point than product of oxosynthesis, separation of biosynthesis product of oil wastes, conversion of separated waste oils to synthetic gas, including evaporation of waste oils gaseous hydrocarbon in reservoir of evaporator to produce mixed steam gas flow of gaseous hydrocarbon and evaporated oil wastes and direct oxidation of mixed vapors gas flow to produce synthetic gas, and recirculation of synthesis gas.EFFECT: invention provides effective method of oxosynthesis with recirculation of converted waste oils and reduced soot formation.41 cl, 4 dwg, 1 tbl

ethod for preparation of 3,3-dimethylbutyraldehyde // 2591703
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing 3.3-dimethylbutyraldehyde, which is used as intermediate compound for producing of sweetener. Method consists in fact that with preliminary cooled dichloromethane one sequentially mixes in tank tert-butyl chloride and vinyl acetate to produce mixture which is held for catalytic reaction in presence of catalyst introduced into mixture, adding deionised water and stirring, after which organic phase is separated and washed with sodium carbonate solution, and then separated from dichloromethane organic phase, drying, condensation and recovery of dichloromethane followed by distillation of organic phase in vacuum and collected fraction of 1-chloro-3.3-dimethylbutylacetate acid is added to it, and obtained mixture is heated to 100 °C-110 °C for hydrolytic disproportionation in presence of catalyst to obtain a mixture containing 3.3-dimethylbutyraldehyde and subsequent purification of mixture by distillation to obtain purified 3.3-dimethylbutyraldehyde.EFFECT: proposed method allows to produce end product with purity higher than 99, 7 %, and output of 95 % by controlled two-stage reaction using readily available material.10 cl, 1 dwg, 3 ex

ethod for continuous hydroformylation of olefins c2-c8 // 2585285
FIELD: chemistry.SUBSTANCE: invention relates to continuous hydroformylation of olefins C2-C8. Proposed method comprises feeding in reactor raw material, synthesis gas and recycled catalyst solution containing rhodium complexes, organophosphorus ligands and heavy by-products, carrying out chemical reaction hydroformylation, isolated from reactor outlet liquid phase, evaporation of liquid phase separation on product aldehydes, followed by purification and fractionation of catalyst solution, from which part of heavy by-products are separated from catalyst by membrane nano filtration and removed, and remaining after this catalyst solution is returned to system. At that, after evaporation separation aldehydes on nano filtration only part of recycled catalyst solution that is preliminarily diluted with solvent, and remaining part of recycled catalyst solution is fed directly into reactor bypassing stage of nano filtration. At that, fed on nano filtration stream is kept in mass amount determined by empirical formula: P·Nt·Kt/St ISP, where P is efficiency at aldehydes, Nt is normal formation of heavy products per unit mass of produced aldehydes, St ISP is concentration of heavy products in catalyst solution at output of evaporator, Kt is empirical coefficient selected in range of 2…5, wherein concentration of heavy products in solution equal to St ISP, is maintained within range of 0.8…0.95 wt, and as solvent for dilution of catalyst solution to be directed for nano filtration, product aldehydes are used added in filtered flow in weight ratio of 1:1…1:5, before dilution aldehydes via catalyst solution inert gas or hydrogen is passed for 3-10 minutes with volume ratio of gas and catalyst solution not less than 10:1, after nano filtration retentate is directed to evaporation stage separation of aldehydes from catalyst solution for regeneration of diluent and retained by return catalyst and diluent of permeate is removed at rectification of main flow of product aldehydes.EFFECT: proposed method allows to reduce losses of catalytically active largest complex and organophosphorus ligand with removal of heavy by-products of condensation of aldehydes, as well as reducing speed and normal formation above heavy products.1 cl, 3 dwg, 1 tbl, 18 ex

ethod for continuous hydroformylation of c3-c21 olefins into aldehydes // 2562971
FIELD: chemistry.SUBSTANCE: invention relates to a method for continuous hydroformylation of C3-C21 olefins into aldehydes in the presence of a catalyst system consisting of separate components - a soluble rhodium compound, a diphosphite ligand and an additional promoting organophosphorus ligand, selected from monophosphine, diphosphine or monophosphite. The method includes, while performing hydroformylation, controlling the value and rate of change of regioselectivity of the process on straight-chain aldehydes, periodically adding to the reaction mixture a disphosphite ligand in amount of 0.1-1 mol per 1 mol of the loaded rhodium and a promoting ligand in amount of 0.1-10 mol per 1 mol of the loaded rhodium, wherein the disphosphite ligand is added when regioselectivity decreases to a value not lower than 80%, and the promoting ligand is added when the rate of decrease of regioselectivity increases by more than 20% relative to the rate of the first decrease of regioselectivity after starting the hydroformylation process.EFFECT: method reduces consumption of the diphosphite ligand with high regioselectivity of the catalyst system on straight-chain aldehydes.1 dwg, 1 tbl, 6 ex

ethod for continuous two-step hydroformylation of c3, c4 olefins and process apparatus therefor // 2561171
FIELD: chemistry.SUBSTANCE: method includes feeding into a first stage reactor fresh olefin and synthesis gas, a recirculating catalyst solution containing a rhodium complex, organophosphorus ligands, product aldehydes and heavy by-products; performing a hydroformylation chemical reaction; separating from the gas-liquid outlet of the first stage reactor unreacted synthesis gas, followed by dividing the remaining part into product aldehydes, a hydrocarbon fraction containing an unreacted olefin and a catalyst solution and recirculating the latter into the first and second stage reactors; feeding the hydrocarbon fraction and unreacted synthesis gas into the second stage reactor; the method characterised by that conversion in reactors of both stages is kept in the range of 75…92% with respect to the fed olefin, and the ratio of the amount of the catalyst solution fed into the first stage reactor to the amount of the catalyst solution fed into the second stage reactor is kept in the range of 3…10; wherein during the hydroformylation process, conversion of heavy products in the recirculating catalyst solution is kept in the range of 80-95% by removing part of the catalyst solution, thereby providing constant concentration of rhodium by feeding a fresh rhodium precursor, and regioselectivity of the process on linear aldehydes is kept higher than 90% by constantly feeding a diphosphite ligand. Inert gases and gaseous by-products are removed from the outlet of the second stage hydroformylation reactor, and all of the remaining catalyst-containing liquid phase is fed into the first stage reactor, wherein separation of product aldehydes from the catalyst solution contained in the outlet of first stage reactor is carried out in a film evaporator, which is blown with a synthesis gas stream separated from the outlet of the first stage reactor. The catalyst solution separated in the evaporator, when removing from the blowing area with synthesis gas, is cooled immediately. The invention also relates to a process apparatus for realising the disclosed method.EFFECT: invention reduces loss of the feed stock, increases specific output of the end product and increases specific capacity of the reaction volume.2 cl, 1 dwg, 2 tbl, 5 ex

Installation for obtaining aldehydes by hydroformylation of c3-c4 olefins with application of catalytic rhodium-based system // 2559052
FIELD: chemistry.SUBSTANCE: installation includes: connected to reactor in parallel way via purification devices sources of synthesis-gas and olefin, successively connected via pipelines with product output from reactor gas-liquid high-pressure separator, device for separation of product aldehydes from catalyst solution, connected with reactor by pipeline of catalyst solution recycle, collector of product aldehyde, rectification column, connected with pipeline of catalyst solution recycle unit of waste catalyst collection and unit of feeding fresh catalyst, as well as line of gas recycle. Installation is provided with gas-liquid separator of low pressure with regulator of gas pressure and stripper, successively installed between gas-liquid high-pressure separator and device for separation of product aldehydes from rhodium-containing catalyst solution, made in form if film evaporator, installed on output of exhaust gases from collector of product aldehyde compressor, refrigerator-condenser and additional high-pressure separator, with output for gas from main high-pressure separator being connected with stripper, output for gas in which is connected with line of gas recycle, with outputs for gases of low-pressure separator and additional high-pressure separator being connected with film evaporator, input of which and stripper are connected with source of synthesis-gas.EFFECT: realisation of hydroformylation on claimed installation makes it possible to increase degree of extraction and re-use of raw material, which does not react during one passage through reactor, increase total conversion of olefins, reduce thermal destruction of catalyst and loss of product aldehydes in the process of separating the latter from catalyst solution, as well as reduce loss of catalyst in the process of catalyst solution recycle.1 dwg, 1 ex

Technological installation for obtaining aldehydes, mainly from butanes or propylene, with application of rhodium catalysts // 2557062
FIELD: chemistry.SUBSTANCE: installation comprises: sources of synthesis-gas and olefins, connected to reactor via purification devices, successively connected by means of pipelines with reactor input gas-liquid separator and evaporator, collector of bottom residue of which is connected with reverse pipeline of liquid recycle, with output of aldehydes from evaporator being collected with rectification column via collector-separator, as well as unit for discharge of waste catalyst and heavy reaction products. Installation is provided with sensor of liquid level, installed in collector of bottom residue; device for preparation of fresh catalyst solution, connected with reverse pipeline of liquid recycle and made in form of mixer with dosing device of catalyst components, with unit for discharge of waste catalyst and heavy reaction products being made in from of successively connected pump with device of its switching on and off, meter of liquid flow, device for distilling aldehydes from waste catalyst solution and connected with meter of liquid flow and dosing device of catalyst components of actuator, with output for aldehydes from device for their distillation from waste catalyst solution being connected with mixer of device for preparation of fresh catalyst solution, and sensor of liquid level is located with device of pump switching on and off.EFFECT: realisation of hydroformylation on claimed installation makes it possible to provide constant optimal quantity of heavy reaction products, optimal composition and quantity of catalyst solution.1 dwg, 1 ex

Regulation of ratio aldehyde of normal structure: aldehyde of iso-structure in process of hydroformylation with mixed ligand by regulation of synthesis-gas partial pressure // 2546110
FIELD: chemistry.SUBSTANCE: invention relates to method of regulating hydroformylation process for obtaining aldehydes of normal structure (N) and iso-structure (I) with ratio N:I. Claimed method includes contact of unsaturated olefin compound with synthesis-gas and catalyst, which contains transition metal and organopolyphosphite and organomonophosphite ligand, with contact being carried out in conditions of hydroformylation, including partial pressure of synthesis-gas, where method includes increase of partial pressure of synthesis-gas to reduce ratio N:I or reduction of partial pressure of synthesis-gas to increase ratio N:I.EFFECT: obtaining aldehydes of normal structure (N) and iso-structure (I) with ratio N to I.10 cl, 1 ex

ethod of hydroformylation by means of double open-end bisphosphite ligand // 2541537
FIELD: chemistry.SUBSTANCE: invention relates to method of hydroformylation and can be used in chemical industry. Claimed is method of hydroformylation for obtaining aldehyde product, including interaction in mode of continuous reaction in liquid phase for hydroformylation of unsaturated olefin compounds, carbon monoxide and hydrogen in presence of mixture of triphenylphosphine and organo-bisphosphite ligand of formula , where R1 and R2 represent monovalent aryl radical, containing from 6 to 40 carbon atoms, R28 represents C1-20-alkyl or cycloalkyl radical or alkoxyradical; and R29 can represent hydrogen atom, C1-20-alkyl or cycloalkyl radical or alkoxyradical. One of said ligands binds with rhodium with formation of hydroformylation catalyst, with molar ratio of triphenyl to metal and organo-bisphosphite ligand to metal constituting at least 4.EFFECT: presence of organomonophosphite in said system of catalysts based on Rh/organopolyphosphite complex results in catalysts stabilisation without loss of reaction rate.10 cl, 5 ex, 2 tbl

ethod of regioselective obtaining of n-pentanal // 2536048
FIELD: chemistry.SUBSTANCE: invention relates to regioselective obtaining of n-pentanal, which is used for obtaining plasticisers, additives to motor oils, synthetic lubricating materials. The method is realised in a medium of an aldehyde-containing solvent by the interaction of synthesis-gas with an industrial butane-butene fraction in the presence of a catalytic system, containing rhodium and a diphosphite ligand, with the reaction being carried out with the content of the aldehyde in the solvent not less than 10 wt %, at temperatures 80-110°C, total pressure 0.7-3 MPa, synthesis-gas pressure 0.5-2.5 MPa, with a molar ratio of hydrogen to carbon oxide being in the range 5.0-0.5, molar ratio diphosphite/Rh being in the range 3-15, and rhodium concentration constituting 30-300 ppm, and the addition into a reaction mixture of antioxidants, selected from bisphenols of general formulas: the content of which constitutes 10-40 mol per 1 g-at. rhodium, where R stands for hydrocarbon univalent radicals or hydrogen.EFFECT: elaboration of a method of regioselective obtaining of n-pentanal.1 tbl, 26 ex

Specific branched aldehydes, alcohols, surfactants and consumer products based thereon // 2532165
FIELD: chemistry.SUBSTANCE: invention relates to a novel acyclic aldehyde having 16 carbon atoms, containing at least three branches and selected from a group consisting of: 3-ethyl-7,11-dimethyldodecanal, 2,3,7,11-tetramethyl-dodecanal, 7,11,-dimethyl-3-vinyldodeca-6,10-dienal and 4,8,12-dimethyltrideca-4,7,11-trienal, to a composition of substances suitable for use as starting material for producing surfactants and containing at least one of the disclosed acyclic aldehydes, to a composition of detergent alcohols, suitable for producing a composition of surfactants and containing at least one acyclic alcohol converted from the disclosed acyclic aldehyde, and to a surfactant composition suitable for use in a detergent or cleaning composition and containing one or more surfactant derivatives of isomers of the acyclic detergent alcohol converted from the disclosed acyclic aldehyde. The invention also relates to versions of a cleaning composition and to versions of a method of producing an alcohol mixture for a composition of detergent alcohols.EFFECT: improved properties of compounds.19 cl, 10 tbl, 24 ex

ethod of producing aldehydes // 2527455
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing aldehydes via hydroformylation of terminal or internal olefins in the presence of a catalyst system containing rhodium and a mono- or polyphosphite ligand. An antioxidant is added to the reaction mixture, the antioxidant being phenols or thioureas of general formulae: where R denotes identical or different aliphatic or aromatic univalent radicals or hydrogen, and hydroformylation is carried out in liquid phase in a solvent medium in form of aldehyde, with rhodium concentration of 0.1-2 mmol/l, at temperature of 20-150°C and pressure of 0.2-5 MPa, wherein the amount of the antioxidant is 1-30 mol/mol phosphite ligand.EFFECT: invention enables to obtain end products using an efficient method at low raw material costs.2 tbl, 15 ex

ethod of processing liquid stream after hydroformylation // 2486171
FIELD: chemistry.SUBSTANCE: present invention relates to a method of processing a hydroformylation reaction liquid product which contains an aldehyde, high-boiling hydroformylation reaction by-products, a homogeneously dissolved rhodium complex catalyst, an unreacted olefinically unsaturated compound, synthesis gas and volatile by-products, in which a) the liquid stream after hydroformylation is throttled in an expansion tank, wherein there is separation into a liquid phase and a gas phase, b) the liquid phase obtained in the expansion tank is fed into a separation device in which there is separation into a liquid phase, which mainly contains high-boiling hydroformylation reaction by-products, a homogeneously dissolved rhodium complex catalyst and a small amount of aldehyde, and a gas phase which contains the bulk of the aldehyde, and c) a liquid rhodium-containing stream is collected from the separation device. A portion of the liquid rhodium-containing output stream collected from the separation device is removed from the process and the other portion is passed through a filter, and the separated solid substances are removed from the process while the obtained filtrate is returned to the hydroformylation reaction.EFFECT: method enables to prevent breakdown and/or deactivation of the hydroformylation catalyst.13 cl, 1 ex, 1 dwg
ethod for direct conversion of lower c1-c4 paraffins to oxygenates // 2485088
FIELD: chemistry.SUBSTANCE: invention relates to a method for direct conversion of lower C1-C4 paraffins to oxygenates such as alcohols and aldehydes, which are valuable intermediate products of organic synthesis and can be used as components of engine fuel and/or starting material for producing synthetic gasoline and other engine fuels. The method involves passing a mixture consisting of a lower paraffin or oxygen, diluted with an inert gas or air or pure oxygen, through a catalyst bed at temperature not higher than 350°C. The catalyst used is a catalyst system for heterogeneous reactions, which contains microfibre of a high-silica support and at least one active element, the active element being in form of either a MeOxHalv composite or a EwMezOxHaly composite, wherein the element Me in both composites is selected from a group which includes transition metals of groups 5-12 and periods 4 and 5, or elements of lanthanum or lanthanide groups or, preferably, ruthenium; element Hal is one of the halogens: fluorine, chlorine, bromine, iodine, but preferably chlorine; element E in the EwMezOxHaly composite is selected from a group which includes alkali, alkali-earth elements, or hydrogen, and indices w, z, x and y are weight fractions of elements in given composites and can vary in the following ranges: z - from 0.12 to 0.80, x - from 0.013 to 0.34, y - from 0.14 to 0.74, w - from 0 to 0.50.EFFECT: method enables to achieve high degree of conversion of starting reactants and high selectivity of formation of alcohols.4 cl, 15 ex

ethod for hydroformylation with improved control over product isomers // 2458906
FIELD: chemistry.SUBSTANCE: present invention relates to a continuous hydroformylation process for producing a mixture of aldehydes with improved control over normal/branched (N/I) isomer ratio of the product aldehydes. The method involves contacting under continuous reaction conditions in a hydroformylation reaction fluid, one or more olefin compounds, carbon monoxide and hydrogen in the presence of a mixture of an organopolyphosphite ligand and an organomonophosphite ligand, at least one of said ligands being bonded to a transition metal to form a hydroformylation catalyst containing a transition metal-ligand complex; the organopolyphosphite ligand comprising a plurality of phosphorus (III) atoms each bonded to three hydrocarbyloxy radicals, any non-bridging species of which consists essentially of an aryloxy radical (substituted or unsubstituted); the contacting is further conducted: (a) at a sub-stoichiometric molar ratio of organopolyphosphite ligand to transition metal such that said molar ratio is greater than 0 but less than 1.0/1; (b) at a super-stoichiometric molar ratio of organomonophosphite ligand to transition metal such that said molar ratio is greater than 2/1; (c) at a carbon monoxide partial pressure in a negative order region of a hydroformylation rate curve wherein rate of reaction decreases as carbon monoxide partial pressure increases, and wherein rate of reaction increases as carbon monoxide partial pressure decreases, the rate curve being measured on an identical hydroformylation process in the presence of the organopolyphosphite ligand but not the organomonophosphite ligand; and (d) with varying the molar ratio of organopolyphosphite ligand to transition metal within the aforementioned sub-stoichiometric range while maintaining the molar ratio of organomonophosphite ligand to transition metal in the aforementioned super-stoichiometric range, so as to control continuously the normal/branched isomer ratio of the aldehyde products.EFFECT: providing a continuous production of a mixture of aldehydes with improved control over normal/branched (N/I) isomer ratio of the aldehyde products.21 cl, 3 ex, 4 tbl, 2 dwg

ethod for carbonylation with addition of sterically hindered secondary amines // 2440325
FIELD: chemistry.SUBSTANCE: invention relates to a carbonylation method in which at least one compound olefinically unsaturated compound reacts with carbon monoxide in the presence of a complex catalyst of a metal of subgroup VIII of the periodic table of elements, containing an organophosphorus compound as a ligand, where the additional reagent used is at least hydrogen and hydroformylation is carried out. Carbonylation is carried out in the presence of at least one sterically hindered secondary amine with 2,2,6,6-tetramethylpiperidine , units. The invention also relates to a mixture for use in the disclosed carbonylation method.EFFECT: invention enables to obtain desired products with high selectivity using a stable catalyst system.18 cl, 4 tbl, 2 ex

ethod for introduction and reclamation of cobalt during hydroformylation of propylene // 2424224
FIELD: chemistry.SUBSTANCE: invention discloses introduction of cobalt in form of a cobalt salt solution into a process for hydroformylation of propylene performed in the presence of a cobalt catalyst, where the said cobalt salt solution is specifically cobalt butyrate dissolved in a high-boiling azeotropic mixture of dimethyl acetamide (DMA) and dimethyl formamide (DMF) in butyric acid. Regeneration of a catalyst which is a mixture of cobalt butyrate and the azeotropic mixture of DMA and DMF with butyric acid is performed by treating the still residue after distillation of the end products with water, followed by stripping off the obtained aqueous extract and returning the stripped off residue to the hydroformylation step.EFFECT: simple hydroformylation process.2 ex
ethod of producing butyl aldehydes in presence of unmodified cobalt catalyst // 2393145
FIELD: chemistry.SUBSTANCE: invention relates to production of butyl aldehydes via hydroformylation of propylene in the presence of unmodified cobalt catalyst at high temperature and pressure with incomplete conversion of propylene, separation of unreacted propylene from the reaction products and recycling it into the process. The hydroformylation products are cooled to 45-50°C at pressure of 20-30 MPa. Unreacted propylene is extracted from the said products through after-cooling into volume-gravity action separator with propylene residence time of not less than 4 minutes at pressure of 0.1-0.2 MPa, with subsequent extraction of unreacted propylene from the gaseous phase of the separation products through compression, cooling and condensation.EFFECT: method reduces propylene consumption, increases reactor output, simplifies and reduces cost of process engineering.3 cl, 4 ex

Hydroformylation process stabilisation // 2388742
FIELD: chemistry.SUBSTANCE: present invention relates to versions of a method of stabilising the hydroformylation process and a device for realising the said method. One version of the method involves reaction of one or more reagents, carbon monoxide and hydrogen in the presence of a hydroformylation catalyst to obtain an exhaust gas stream and a reaction product stream which contains one or more products, in which the method described above is realised at such partial pressure of carbon monoxide that, the rate of reaction increases when partial pressure of carbon monoxide falls, and falls when partial pressure of carbon monoxide increases; and in which the following steps of the process for stabilising the rate of reaction, total pressure, speed of the exhaust gas stream, reaction temperature or combinations thereof are carried out, process steps including at least one of the following process control schemata, selected from: Scheme A: (a1) setting a given total pressure; (a2) determination of total pressure and determination of the difference between the measured total pressure and the given total pressure; and (a3) based on the pressure difference measured at step (a2), manipulation of the stream of incoming gas which contains carbon monoxide in order to balance the measured total pressure to virtually the given total pressure; and Scheme B: (b1) setting a given speed of the exhaust gas stream; (b2) determination of the speed of the exhaust gas stream and determination of the difference between the measured speed of the exhaust gas stream and the given speed of the exhaust gas stream; and (b3) manipulation of the speed of incoming gas which contains carbon monoxide based on the difference in the speed of the exhaust gas stream measured at step (b2) in order to equalise the determined speed of the exhaust gas stream virtually with the given speed of the exhaust gas stream.EFFECT: design of an efficient method of stabilising the hydroformylation process.26 cl, 2 tbl, 20 dwg, 7 ex

ethods of radiofluorination of biologically active vectors // 2363704
FIELD: chemistry.SUBSTANCE: invention refers to the conjugates of formula (V) or (VI) : wherein X is -CO-NH- or -O-; their use as radiopharmaceuticals, processes for their preparation, and synthetic intermediates used in such processes.EFFECT: use as radiopharmaceuticals.25 cl, 15 ex

ethod for cobalt regeneration of cobalt sludge // 2363539
FIELD: chemistry.SUBSTANCE: invention refers to the field of organic synthesis, namely to the preparation of butyraldehyde from synthesis gas and propylene by the method of oxo process (called also propylene hydroformylation process), particularly to the cobalt regeneration of cobalt sludge. The described method involves the regeneration of the cobalt from cobalt-containing sludge forming in oxo process with usage of cobalt dicarbonyl as catalyst by the way of sludge treatment by the high-boiling organic acid with stirring at elevated temperatures, preferably 190-220°C at the ratio acid: sludge equal 10-20 during no less than 4 hrs.EFFECT: simplifying of the technology of cobalt sludge regeneration and implementation of the regeneration stage directly on the hydroformylation plant.3 cl, 3 tbl, 1 ex

ethod of aldehydes c3-c21 production // 2354642
FIELD: chemistry.SUBSTANCE: invention refers to method of aldehydes C3-C21production, consisting that olefins are hydroformylated with the catalyst system added as containing rhodium, polyphosphide ligand of general formula: where k+m≥2, and optionally k=0 or m=0; X is hydrocarbon radical including 1 to 50 carbon atoms; Z is hydrocarbon radicals identical or different in fragments m including 2 to 30 carbon atoms; Y is hydrocarbon radicals identical or different including 1 to 30 carbon atoms, and phosphoprous-containing promoting ligand chosen of monodentate organophosphine, bidentate organodiphosphine and organophosphite. Then product aldehydes are separated from the dissolved catalyst by distillation. The mole ratio of promoting ligand/Rh is 1-50. The disclosed method allows for radioselective production of linear aldehydes C3-C21.EFFECT: reduced initial charge of polyphosphite ligand with lowered deactivation.8 cl, 8 tbl, 25 ex

C6+ olefin hydroformylation catalyst, method for preparation thereof, and a process for production of aldehydes c7+ // 2320412
FIELD: organic synthesis catalysts.SUBSTANCE: invention relates to synthesis of C7+-aldehydes from C6+-olefins, carbon monoxide, and hydrogen via hydroformylation reaction and to preparation of catalyst used in this reaction. Olefin hydroformylation catalyst contains complex compound of rhodium with polymeric nitrogen-containing ligand including phosphorus-containing fragments. Each of these fragments contains organic radicals, at least one of which is linked to nitrogen atom of polymeric nitrogen-containing ligand and phosphorus atom is in the form of Ph(III). Catalyst preparation consists in that nitrogen-containing polymer is subjected to reaction in organic solvent with Ph(III) compound including organic radicals, of which at least one radical includes group -C(O)OH. Thus obtained product is then subjected to reaction with rhodium compound and organic solvent is removed.EFFECT: increased and preserved specific activity and regioselectivity of recycled catalyst and reduced pressure in aldehyde production process.11 cl, 1 tbl, 8 ex
ethod for isolating n-butyric aldehyde // 2310644
FIELD: organic chemistry, chemical technology.SUBSTANCE: invention relates to a method for isolating n-butyric aldehyde from the aldehyde distillate of a propylene hydroformylation product containing, n-butyric aldehyde, isobutyric aldehyde and water, butyl alcohols, methanol, butylformate, acids, hydrocarbons, saturated and unsaturated butyl esters, propylketones, butylbutyrates, C8-aldehydes, C12-acetals and unidentified oxygen-containing components as impurities. Method is carried out into two fractionating devices wherein isobutyric aldehyde, water and some amount of n-butyric aldehyde and other impurities are isolated by upper part of the first device, and the end n-butyric aldehyde is isolated by upper part of the second device from vat product of the first device. Isolation of n-butyric aldehyde is carried out in heat-mass-exchange devices equipped by heat-mass-exchange packages made of metallic sheet or net and prepared as Z-shaped crimps, and special equipments for uniform distribution of phlegm by device section and wherein the specific surface of these packages is 100-800 m2/m3 and with corresponding height of crimps and their slope by vertical providing the pressure drop value between upper part and bottom of the first device in the range 0.01-0.10 atm., and that of the second device in the range 0.01-0.07 atm. Isolation of head fraction in the first device is carried out with consumption wherein amount of n-butyric aldehyde in its is 2-2 wt.-% of potential content in rectification raw. Separation in the second device is carried out at the spraying temperature on upper package of the device in the range 20-30oC. Method provides simplifying of technology in isolation of n-butyric aldehyde, enhancing potential removal of n-butyric aldehyde and decreasing consumption of heating steam per 1 t of the end product.EFFECT: improved isolating method.11 ex
ethod for oxidation of liquid hydrocarbons in barrier discharge // 2293075
FIELD: organic chemistry, chemical technology.SUBSTANCE: invention relates to a method for oxidizing liquid hydrocarbons in barrier discharge carried out in the bubble reactor with mixtures of oxygen with helium, argon or nitrogen. Method involves using helium, argon and nitrogen taken in the amount 20-80%. The oxidation process is carried out in the presence of solid additives wherein aluminum, nickel, molybdenum, copper oxides or zeolite catalyst ZSM-5 comprising 1.2% of Fe is used. Method provides reducing energy consumptions for oxidation of the parent hydrocarbon in the barrier discharge.EFFECT: improved oxidizing method.3 cl, 2 tbl, 10 ex
2-ethylhexanal production process // 2272804
FIELD: industrial organic synthesis.SUBSTANCE: invention relates to improved process for production of 2-ethylhexanal, which is raw material for production 2-ethylhexanoic acid and/or 2-ethylhexanol. Starting material of invention is bottom residue from rectification of butyl alcohols produced in oxo synthesis, from which bottom residue a fraction mainly containing saturated and unsaturated C8-alcohols with 5-15% of C12-acetals is isolated on two columns operated at column top residual pressure 50-90 mm Hg. This fraction is subjected to vapor-phase processing at atmospheric pressure on copper-containing catalyst at 200-300°C followed by rectification of catalysate on two columns to isolate, as first-column top distillate, fraction obtained at 20-50 mm Hg and containing light components and 2-ethylhexanal, which fraction is fed into second column operated at column top residual pressure 60-100 mm Hg to isolate distilled fraction containing light components and 30-60% of 2-ethylhexanal, whereas desired 2-ethylhexanal is recovered as bottom product or as product tapped from the side of bottom column section.EFFECT: improved quality and yield of desired product.2 cl, 14 ex

ethod for preparing aldehydes comprising 3-21 carbon atoms // 2270829
FIELD: organic chemistry, chemical technology.SUBSTANCE: invention relates to the hydroformylation process of olefins with using rhodium catalyst for preparing aldehydes comprising 3-21 carbon atoms. Reaction products from the hydroformylation reactor are separated for: (a) gaseous and liquid phase; (b) liquid phase is fractionated for a head fraction containing unreacted olefins and aldehydes and a vat fraction containing by-side products and rhodium catalyst, and (c) the vat fraction is cooled to temperature lower than the hydroformylation point into reactor, preferably, to 10-120°C. Then the vat fraction is saturated with carbon monoxide-containing gas under partial pressure of carbon monoxide 0.1-300 bars. The vat fraction containing catalyst and carbon monoxide are recovered completely or partially into the hydroformylation reactor. Invention provides prolonged working life of catalyst due to prevention of its inactivation in stages for isolation of the end product.EFFECT: improved preparing method.11 cl, 3 tbl, 3 dwg, 2 ex

ethod for production of carbonyl compounds // 2270185
FIELD: organic chemistry, in particular production of carbonyl compounds such as aldehydes and ketones.SUBSTANCE: claimed method includes reaction of nitrous oxide with alkenes in presence of inert gas as diluent. Reaction is carried out in gas phase at 401-700°C and under pressure of 2-300 atm. Target compounds represent value intermediates for precise and base organic synthesis.EFFECT: method of high selectivity in relation to target products and improved explosion proofing.5 cl, 1 tbl, 14 ex

ethod for catalytic realization of multiphase reaction, particularly, hydroformylation reaction // 2266894
FIELD: chemical technology.SUBSTANCE: invention describes a method for realization of the multiphase reaction of hydroformylation of olefins in tube reactor wherein a catalyst is in the continuum liquid phase and at least one the parent product is in the dispersed phase. The hydroformylation reaction is carried out at the loading coefficient B 0.8 or above that is calculated as a quotient from the pressure fall PD length value and the static pressure PS value wherein PD = Cw x g/2 x w2/D and PS = (M/V) x g wherein Cw means a tube reactor resistance coefficient; D means diameter of tube reactor; W means a flow rate moving; S means a density value of flowing phase; M means a weight flow of all components in reactor; V means a volume flow; g = 9.81 m/c2.EFFECT: improved method, enhanced output of process.11 cl, 1 dwg, 9 ex
ethod for preparing butyric aldehydes concentrate // 2258059
FIELD: organic chemistry, chemical technology.SUBSTANCE: invention relates to the improved method for preparing concentrate of butyric aldehydes by oxonation. Method is carried out by the hydroformylation reaction of propylene with synthesis-gas in two in-line connected reactors at temperature 120-150°C, under pressure 250-300 kgf/cm2 and with heat removing by circulation of cooling agent through Field's tubes installed in hydroformylation reactors followed by separation of reaction products. The hydroformylation process in the first reactor is carried out in regimen when the ratio of volume consumptions of cooling agent circulating in Field's tubes and propylene feeding into reactor is (18-28):1. Invention provides enhancing yield of end products, improving energetic indices due to effective heat transfer in the hydroformylation reactor.EFFECT: improved preparing method.1 tbl, 4 ex
ethod for separating products of propylene hydroformylation // 2254323
FIELD: organic chemistry, chemical technology.SUBSTANCE: technology for separation of hydroformylation products by naphthenate-evaporating schedule of oxo-synthesis. Separation of propylene hydroformylation products after its decolbatization is carried out by a single evaporation under atmosphere pressure with separation of distillate - fraction of butyric aldehydes from the vat residue - cobalt salts solution in high-boiling by-side products. Indicated evaporation with separation of vapor phase from liquid phase is carried out in separator device under atmosphere pressure, at temperature of liquid phase 90-115°C or 130-170°C with reinforced circulation of liquid phase through boiler at the circulation ratio = (3-30):1. Then the successive additional extraction aldehydes and alcohols from the vat residue are carried out by a single evaporation under vacuum. Method provides reducing loss of cobalt catalyst at the stage for separating products of oxidative decolbatization, and improved economic indices.EFFECT: improved method for separating.9 ex

The method of obtaining carbonyl compounds // 2227133
The invention relates to a method for producing carbonyl compounds with the number of atoms2-C40
Synthesis and purification of 3,3-dimethylbutyramide through the oxidation of 1-chloro-3,3-dimethylbutane dimethylsulfoxide (options) // 2217410
The invention relates to methods of obtaining and purification of 3,3-dimethylbutyramide

A method of producing aldehydes // 2212396
The invention relates to a method for producing an aldehyde intermediate of organic synthesis

The method of obtaining saturated monoallelic // 2205174
The invention relates to a method for saturated monoallelic - intermediate products of organic synthesis

The method of obtaining oxygen-containing organic compounds - mixtures of ketones and unsaturated alcohols and aldehydes may // 2174113
The invention relates to the field of production of oxygen-containing organic compounds, ketones, unsaturated alcohols and possibly aldehydes by isomerization WITH5-epoxides in the presence of a homogeneous catalyst

The method of obtaining the oxidized products // 2140897
The invention relates to processes for the oxidized products, namely the processes of obtaining the oxidized products enriched in olefins feedstock
The allocation method n-butyric aldehyde product of propylene hydroformylation // 2130917
The invention relates to chemical technology, namely the allocation method n-butyric aldehyde (IA) in the process of oxosynthesis

The method of producing corrosion inhibitor // 2086531
The invention relates to oxygen-containing compounds, in particular to the processing of still residue of butyl alcohols production method oxosynthesis, more specifically to an improved method of processing waste products of alcohols and aldehydes by the method of propylene hydroformylation

The method of obtaining isovalerianic aldehyde // 2074851
The invention relates to petrochemistry, namely the method of production of isovalerianic aldehyde, which is used in the pharmaceutical industry (drugs cardiology appointment)

A method of producing aldehydes c5- c7 // 2059598
The invention relates to petrochemical synthesis, namely the two-phase process for the preparation of aliphatic aldehydes, which are used for the production of plasticizers and surfactants

Poly-n-methyl-n, n-valiumaddictionat as a component of the catalyst of olefins hydroformylation // 2049794
The invention relates to the chemistry of macromolecular compounds, in particular, to a new water-soluble polymer is poly N-methyl-N,N-diallylmethylamine, which is an effective water-soluble component of the catalyst hydroformylating olefins

The allocation method n-butyric aldehyde product of propylene hydroformylation // 2043332
The invention relates to chemical technology, more specifically to an improved method of allocating n-butyric aldehyde (IA) from mixtures also containing somelady aldehyde (IMA), pentane-hexane fraction of saturated hydrocarbons (PGF), bodyformat forming intangible assets with azeotropic system
 
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