Catalyst for oxidation of ethanol in acetone
(57) Abstract:Usage: catalytic chemistry, in particular the production of catalysts for the oxidation of ethanol in acetone. The inventive catalyst contains zinc oxide 96,5 8 - 97,9 wt. % BF ZnO, cerium oxide 2,1 - 3,42 wt. % BF CeO2. The catalyst was prepared by mixing a solution of cerium oxide in water with a solution of zinc oxide in ammonium hydroxide. The resulting slurry is dried and calcined. table 2. The invention can be used to produce acetone valuable product of the petrochemical industry.The invention relates to the creation of new highly active catalyst for the conversion of ethanol in acetone.Acetone, as it is known, is obtained from isopropyl alcohol. And only in recent years began to appear to receive the acetone directly from ethanol.Known catalysts get acetone from ethanol, including zincoxide, micaceous iron, calcitonine [1-3]
Closest to the invention to the technical essence and the achieved result is the obtaining of acetone ethanol in the catalyst composition of Fe2O3:CaO1:1  this catalyst at 450aboutWith the release of acetone SOS the plants is the catalyst, providing a higher activity and selectivity in the conversion of ethanol in acetone.This object is achieved by the conversion of ethanol in Zn-Se-oxide catalyst having the atomic ratio of Zn:Ce:O 9:0,1:(9,2 0,02), the content of the following oxides in wt. ZnO 97,71; CeO22,29.The use of this catalyst allows you to achieve 100% degree of conversion of ethanol in 73% yield of acetone.This catalyst allows to increase the output of acetone compared to the prototype.Thus, the distinguishing feature of the invention is that developed a new catalyst process for the conversion of ethanol in acetone.When conducting a patent search in the literature was not found using the specified catalyst in the conversion of ethanol in acetone, allowing the applicant to consider the proposed catalyst of this process meets the criterion of invention "a new catalyst".Below are examples illustrating the invention.In all examples, the conversion of ethanol in acetone was studied under the following conditions: volumetric feed rate of the reactants 780 0 h-1the ratio ethanol: 2 C.P R I m e R 1. The process of making ethanol spend on Zn-Ce-oxide catalyst containing oxides, ZnO 97,71% SEO2to 2.29%
The catalyst was prepared as follows. 24,31 g ZnO is dissolved in 150 ml of NH4OH, 0,57 g CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4OH. The resulting suspension is dried at 110aboutWith and calcined 2 hours at 300aboutWith, then 4 h at 550aboutC.P R I m m e R 2. The conversion of ethanol spend on Zn-Ce-oxide catalyst containing oxides, ZnO 97,43; CEO2to 2.57.The catalyst was prepared as follows. 24,24 g ZnO is dissolved in 150 ml of NH4OH, 0.64 g CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4OH. The resulting suspension is dried at 110aboutWith and calcined 2 hours at 300aboutWith, then 4 h at 550aboutC.P R I m e R 3. Ethanol transform on Zn-Ce-oxide catalyst containing oxides, ZnO 97,9; CEO22,1.For the preparation of the catalyst 24,37 g ZnO is dissolved in 150 ml of NH4OH, 0.52 g CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO
Zinc oxide - 96,58 - 97,9
The cerium oxide - 2,1 - 3,42
FIELD: industrial organic synthesis.
SUBSTANCE: invention provides catalytic deiodination composition containing 0.95 wt parts of ethyl acetate and 8-50 wt parts of metallic zinc in the form of 3-6 mm granules. Hexafluoro-1,2,3,4-terachlorobutane production process involving use of this catalyst is characterized by that process is carried out for 20-40 h at 20-25°C, after which resulting product is washed with water at ambient temperature. Catalyst is distinguished by being accessible, inexpensive, nontoxic, and easy-to-use. Process is characterized by high yield of hexafluoro-1,2,3,4-terachlorobutane (90-98%) resulting in easiness of isolation thereof using ordinary water washing. Equipment necessities are also non-onerous.
EFFECT: increased yield of desired product and simplified technology.
2 cl, 1 tbl, 9 ex
FIELD: petroleum processing and petrochemical processes.
SUBSTANCE: invention relates to some catalyst compositions and processes capable of lowering level of sulfur compounds commonly present as parts of gasoline fraction streams in fluidized-bed catalytic cracking processes. Equilibrium cracking catalyst composition is used comprising at least one Y-type zeolite having kinetic activity in feedstock conversion equal to about 3 combined with alumina-based composite, which contains Lewis acid in amount of at least 50% by weight based on the total catalyst composition.
EFFECT: achieved kinetic activity of equilibrium catalyst during feedstock conversion equal to about 2.
27 cl, 2 dwg, 3 tbl, 3 ex
FIELD: industrial organic synthesis.
SUBSTANCE: method comprises contacting vapor-phase mixture at 150-205°C with alkali and/or alkali-earth metal carboxylate dispersed on activated carbon resulting in conversion of alkyl iodides into corresponding carboxylic acid esters, while iodine becomes bound in the form of inorganic iodide.
EFFECT: facilitated freeing of carboxylic acid product from organic iodine compounds.
4 cl, 2 tbl, 32 ex
FIELD: chemical industry; environmental protection technologies and methods of utilization of the waste mercury-containing catalyzer.
SUBSTANCE: the invention is pertaining to the field of environmental protection technologies, in particular, to the processes of utilization of the waste mercury-containing catalyzer for the process of hydrochlorination of the ethine. The invention presents the method of utilization of the mercury-containing catalyzer by its heating in the medium of the reducing gas, in the capacity of which use the residual gas of the high-temperature homogeneous pyrolysis of hydrocarbons. The heating is conducted at the temperature of 400-700°C within 4-7 hours. The technical result of the invention is the complete extraction (99.99 %) of mercury from the waste catalyzer, that transforms the mercury into the non-toxic substance.
EFFECT: the invention ensures the complete extraction of mercury from the waste catalyzer, that transforms the mercury into the non-toxic substance.
5 tbl, 6 ex, 1 dwg
FIELD: organic chemistry, chemical technology, catalysts.
SUBSTANCE: invention relates to using zinc derivatives of the general formula (I): wherein L1 represents group of formulas: -E15(R15)(R15 ') or -E16(R16) wherein E represents nitrogen atom; L2 and L3 represent independently group of the formula: -E14(R14)(R14 ')(R14 '') wherein E14 represent carbon or silicon atom; E15 represent nitrogen atom; E16 represents oxygen atom; R14, R14 ', R14 '', R15, R15 ' and R16 represent independently hydrogen atom, (C1-C6)-alkyl, phenyl or radical of the formula -E14 'RR'R'' wherein E14 ' represents carbon or silicon atom; R, R' and R'' represent independently hydrogen atom or (C1-C6)-alkyl as catalysts in the (co)polymerization reaction of cyclic esters. Also, invention proposes a method for synthesis of block-copolymers or static copolymers or polymers involving simultaneous addition of one or some monomers chosen from cyclic esters, a polymerization catalyst, a growth chain initiating agent and optionally additives. A growth chain initiating agent and a polymerization catalyst are represented by a single compound of the general formula (I) given above. The claimed invention provides carrying out the homogenous polymerization process resulting to yield of a substance with regulated indices.
EFFECT: valuable properties of catalysts, improved method of synthesis.
8 cl, 7 ex
FIELD: disproportionation process catalysts.
SUBSTANCE: invention relates to generation of hydrogen through steam conversion of carbon monoxide and development of catalyst for indicated process. Invention provides carbon monoxide conversion catalyst showing high catalytic activity and heat-conductivity and a process of steam conversion of carbon monoxide using indicated catalyst. Catalyst is characterized by heat-conductivity at least 1 W(mK)-1, which enables performing process with low temperature gradient in direction transversal to gas stream direction.
EFFECT: increased catalytic activity and heat-conductivity.
7 cl, 4 dwg, 3 tbl, 10 ex
FIELD: petrochemical processes and catalysts.
SUBSTANCE: invention relates to processes for hydrocarbon feedstock conversion into aromatic hydrocarbons, in particular to light hydrocarbon aromatization process catalysts, to catalyst preparation processes, and aromatic hydrocarbon production processes. A composite light hydrocarbon aromatization process catalyst is described, which contains acidic microporous component with pore size at least 5 Å and oxide component exhibiting dehydrogenation activity and selected from aluminum hydroxide and/or oxide having transportation pore size at least 20 nm, said oxide component having been treated with promoter element compounds. Described are this catalyst preparation method and aromatic compound production process in presence of above-described catalyst.
EFFECT: increased activity and selectivity regarding formation of aromatic hydrocarbons and stabilized functioning of catalyst.
11 cl, 1 tbl, 23 ex
FIELD: oil refining industry and petrochemistry; hydrorefining of petroleum distillates.
SUBSTANCE: hydrorefining of petroleum distillates is carried out at elevated temperature and increased pressure in presence of catalyst containing carrier - highly porous cellular material on base of aluminum α-oxide modified by aluminum γ-oxide or sulfated zirconium dioxide; used as active component is palladium or palladium modified by palladium nano-particles or palladium in mixture with zinc oxide in the amount of 0.35-20.0 mass-%. The process is carried out at temperature of 150-200°C and pressure of 0.1-1.0 Mpa.
EFFECT: enhanced efficiency; facilitated procedure; possibility of hydrorefining of gasoline and diesel distillates.
2 cl, 1 tbl
FIELD: oxidation catalysts.
SUBSTANCE: invention relates to carbon monoxide oxidation catalysts suitable to remove it from emission gases. Use of cadmium telluride as carbon monoxide oxidation catalyst is described.
EFFECT: interaction activity and selectivity of catalyst.
FIELD: oxidation catalysts.
SUBSTANCE: invention relates to carbon monoxide oxidation catalysts suitable to remove carbon monoxide from emission gases. Catalyst according to invention contains cadmium telluride and indium antimonide at weight ratio 95:5.
EFFECT: increased activity and selectivity of catalyst.
FIELD: hydrocarbon conversion catalysts.
SUBSTANCE: catalyst for generation of synthesis gas via catalytic conversion of hydrocarbons is a complex composite composed of ceramic matrix and, dispersed throughout the matrix, coarse particles of a material and their aggregates in amounts from 0.5 to 70% by weight. Catalyst comprises system of parallel and/or crossing channels. Dispersed material is selected from rare-earth and transition metal oxides, and mixtures thereof, metals and alloys thereof, period 4 metal carbides, and mixtures thereof, which differ from the matrix in what concerns both composition and structure. Preparation procedure comprises providing homogenous mass containing caking-able ceramic matrix material and material to be dispersed, appropriately shaping the mass, and heat treatment. Material to be dispersed are powders containing metallic aluminum. Homogenous mass is used for impregnation of fibrous and/or woven materials forming on caking system of parallel and/or perpendicularly crossing channels. Before heat treatment, shaped mass is preliminarily treated under hydrothermal conditions.
EFFECT: increased resistance of catalyst to thermal impacts with sufficiently high specific surface and activity retained.
4 cl, 1 tbl, 8 ex
FIELD: alternative fuel production and catalysts.
SUBSTANCE: invention relates to (i) generation of synthesis gas useful in large-scale chemical processes via catalytic conversion of hydrocarbons in presence of oxygen-containing components and to (ii) catalysts used in this process. Catalyst represents composite including mixed oxide, simple oxide, transition element and/or precious element, carrier composed of alumina-based ceramic matrix, and a material consisting of coarse particles or aggregates of particles dispersed throughout the matrix. Catalyst has system of parallel and/or crossing channels. Catalyst preparation method and synthesis gas generation method utilizing indicated catalyst are as well described.
EFFECT: enabled preparation of cellular-structure catalyst with high specific surface area, which is effective at small contact times in reaction of selective catalytic oxidation of hydrocarbons.
6 cl, 2 tbl, 16 ex