Method of extracting and sending for recycling ruthenium homogeneous catalysts

FIELD: chemistry.

SUBSTANCE: invention describes method for extraction of homogeneous ruthenium catalyst from glycolic acid hydrogenation reaction product, glycolic acid esters and/or glycolic acid oligomers under action of extractant containing hydrophobic solvent and optional hydrophilic solvent. Ruthenium catalyst, which may include 1,1,1-tris(diaryl- or dialkylfosfinomethyl)alkane ligands, can be extracted from hydrophobic extract phase as result of extraction under action of hydrophilic solvent and sent for recycling in process of producing ethylene glycol as result of glycolic acid and glycolic acid derivatives hydrogenation.

EFFECT: technical result is effective method of ruthenium-1,1,1-tris(diaryl- or dialkylfosfinomethyl)alkane catalyst compositions extracting from glycolic acid hydrogenation waste product till maximum extraction of catalyst system at minimal costs in combined method, taking into account stages of both reaction and separation for producing ethylene glycol.

29 cl, 7 dwg, 26 tbl, 17 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: one version involves providing water and a water-soluble oxygen-containing hydrocarbon, including a C1+O1+ hydrocarbon, in an aqueous liquid phase and/or vapour phase, providing H2, conducting liquid and/or vapour-phase catalytic reaction of the oxygen-containing hydrocarbon with H2 in the presence of a deoxygenation catalyst at deoxygenation temperature and at deoxygenation pressure to obtain a reaction stream of oxygenate which contains a C1+O1-3 hydrocarbon, and conducting liquid and/or vapour-phase catalytic reaction of the oxygenate in the presence of a condensation catalyst at condensation temperature and at condensation pressure to obtain a C4-30 compound, where the C4-30 compound includes a compound selected from a group consisting of C4-30 alcohol, C4-30 ketone, C4-30 alkane, C4-30 alkene, C5-30 cycloalkane, C5-30 cycloalkene, aryl, condensed aryl and mixture thereof; and where (a) the deoxygenation catalyst and the condensation catalyst are chemically different, or (b) deoxygenation temperature ranges from about 80C to about 300C, and condensation temperature ranges from about 325C to about 375C. The invention also relates to apparatus for realising said method.

EFFECT: invention provides a method of processing biomass using catalytic methods.

20 cl, 56 ex, 13 tbl, 19 dwg

FIELD: chemistry.

SUBSTANCE: described are methods of producing propylene glycol, ethylene glycol and other polyatomic alcohols, diatomic alcohols, ketones, aldehydes, carboxylic acids and alcohols from biomass using hydrogen obtained from the biomass. Methods involve reaction of a portion of an aqueous stream of the crude solution of the biomass in the presence of a catalyst under aqueous phase reforming conditions to obtain hydrogen, and then reaction of hydrogen and the crude aqueous solution in the presence of a catalyst to obtain propylene glycol, ethylene glycol and other polyatomic alcohols, diatomic alcohols, ketones, aldehydes, carboxylic acids and alcohols.

EFFECT: described methods can be realised at lower temperature and pressure, and enable to obtain oxygen-containing hydrocarbons without the need for supplying hydrogen from an external source.

62 cl, 16 ex, 11 dwg

The invention relates to the field of cooking chromium catalysts used for a wide range of catalytic processes, for example, conversion, digidrive, origene, polymerization and other

FIELD: chemistry.

SUBSTANCE: method involves, for example: (a) evaporation of said oxidised discharge stream, containing terephthalic acid, metallic catalyst, impurities, water and solvent, in the first zone of an evaporator to obtain a vapour stream and a concentrated suspension of the discharge stream; and (b) evaporation of the said concentrated suspension of the discharge stream in the second zone of the evaporator to obtain a stream rich in solvent and a high-concentration suspension of the discharge stream, where the said second zone of the evaporator has an evaporator operating at temperature ranging from 20C to 70C, where from 75 to 99 wt % of the said solvent and water is removed by evaporation from the said oxidised discharge stream at step (a) and (b); (c) the said high-concentration suspension of the discharge stream is filtered in a zone for separating solid products and liquid to form a filtered product and a mother liquid; (d) washing the said filtered product using washing substances fed into the said zone for separating solid products and liquid to form a washed filtered product and washing filtrate; and dehydration of the said filtered product in the said zone for separating solid products and liquid to form a dehydrated filtered product; where the said zone for separating solid products and liquid has at least one pressure filtration device, where the said pressure filtration device works at pressure ranging from 1 atmosphere to 50 atmospheres; (e) mixing water and optionally extractive solvent with the said mother liquid and with all of the said washing filtrate or its portion in the mixing zone to form an aqueous mixture; (f) bringing the extractive solvent into contact with the said aqueous mixture in the extraction zone to form a stream of extract and a purified stream, where the said metallic catalyst is extracted from the said purified stream.

EFFECT: improved method of extracting metallic catalyst from an oxidised discharge stream obtained during production of terephthalic acid.

36 cl, 3 dwg, 2 tbl, 2 ex

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention relates to regeneration of basic anionite catalysts for process of production of alkylene glycols via hydration of corresponding alkylene oxides. Method according to invention consists in treatment of spent catalyst with aqueous solution of inorganic salts of iodine and inorganic acids or with hydroiodic acid aqueous solution.

EFFECT: achieved complete restoration of initial volume and selectivity of catalyst and thereby prolonged lifetime of expensive anionite catalyst.

1 tbl, 8 ex

FIELD: processes catalyzed by metal-phosphoro-organic ligand complexes when target product may be selectively extracted and separated from liquid product.

SUBSTANCE: Specification gives description of methods of separation of one or several products of decomposition of phosphoro-organic ligand, one or several reaction byproducts and one or several products from liquid reaction product synthesized continuously and containing one or several non-consumed reagents, catalyst in form of complex of metal-phosphoro-organic ligands, not obligatory free phosphoro-organic ligand, one or several said decomposition products of phosphoro-organic ligand, one or several said reaction byproducts, one or several said products, one or several non-polar solvents and one or several polar solvents by separation of phases where (i) is selectivity of non-polar phase for phosphoro-organic ligand relative to one or several products expressed by ratio of distribution coefficient Ef1 whose magnitudes exceeds about 2.5; (ii)is selectivity of non-polar phase for phosphoro-organic ligand relative to one or several decomposition products expressed by ratio of distribution coefficients Ef2 whose magnitude exceeds proximately 2.5; and (iii) is selectivity of non-polar phase for phosphoro-organic ligand relative to one or several reaction byproducts expressed by ratio of distribution coefficients Ef3 whose magnitude exceeds approximately 2.5 (versions). Description is also given of continuous methods of obtaining one or several products (versions) and reaction mixture containing one or several aldehyde products.

EFFECT: increased conversion of initial materials and selectivity by product; avoidance or exclusion of deactivation of catalyst.

20 cl, 2 tbl

The invention relates to an improved method of separating one or more products from the liquid reaction product containing the catalyst in the form of complex compounds of a metal with an organophosphorus ligand, optionally free organophosphorus ligand, a non-polar solvent, the polar solvent is selected from the group comprising NITRILES, lactones, pyrrolidone, formamide and sulfoxidov, and named one or more products, the method comprises (1) mixing named liquid reaction product to obtain phase separation a nonpolar phase containing the above catalyst, optionally free organophosphorus ligand and called nonpolar solvent and a polar phase, contains named one or more products and a polar solvent, and (2) the Department called the polar phase from the named non-polar phase, and named the organophosphorus ligand has a distribution coefficient between the nonpolar solvent and the polar solvent of greater than about 5, and named one or more products is the distribution coefficient between the polar solvent and the nonpolar rastvorimo of the reaction product, containing the catalyst in the form of complex compounds with metal-phosphorus metal, optionally free organophosphorus ligand, a non-polar solvent and one or more products, the method comprises (1) mixing named liquid reaction product with a polar solvent selected from the group comprising NITRILES, lactones, pyrrolidone, formamide and sulfoxidov, to obtain phase separation a nonpolar phase containing the above-mentioned catalyst, optionally free organophosphorus ligand and called nonpolar solvent and a polar phase containing named one or more products and a polar solvent, and (2) the Department called the polar phase from the named non-polar phase, and named the organophosphorus ligand and named one or more products have the distribution coefficient between the nonpolar solvent and the polar solvent of greater than about 5, and named one or more products is the distribution coefficient between the polar solvent and the nonpolar solvent of greater than about 0.5

The invention relates to the production of 1,3-propane diol by hydroformylation of ethylene oxide through the intermediate solution of 3-hydroxypropane from which to remove residual carbon dioxide and insoluble catalytic compounds of cobalt or rhodium

The invention relates to improvements in the carbonylation of methanol to acetic acid with a low content of water in the presence of registeruser catalyst component and an alkali metal for the removal of corrosion products metal

The invention relates to a new method of regenerating catalyst alkylation, which contains a sulfone component and method of removal mechanisms of alkylation catalyst, and the specified sulfon is sulfolane, and KRM-absorbent material selected from the group consisting of aluminum oxide, carbon and mixtures thereof

FIELD: chemistry.

SUBSTANCE: disclosed is a catalyst system for highly selective trimerisation of ethylene into 1-hexene, which consists of a chromium (III) complex with a branched structure, having one or more substitutes in a hydrocarbon SNS skeleton, and an activator which is a mixture of trimethylaluminium and methylaluminoxane, wherein the molar ratio of the components of the catalyst system [Cr]:TMA:MAO is equal to 0.4%:49.8%:49.8%.

EFFECT: catalyst provides high selectivity of the process of trimerising ethylene into 1-hexene while minimising formation of a polymer by-product.

2 cl, 1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: disclosed catalyst systems include a chromium complex of general formula [(Ph2PXPPh2)Cr(H2O)Cl3], where X is a hydrocarbon biradical or a substituted hydrocarbon biradical, or [Ph2P(1,2-C6H4)PPh (1,2-C6H4)CH3]CrCl3 together with an activator/co-activator - methylaluminoxane/trimethylaluminium system. Components of the system are in the following molar ratio: chromium complex:MAO:TMA = 0.1%:21.4%:78.5%.

EFFECT: high selectivity of the catalyst with respect to 1-hexene while maintaining high efficiency of the catalyst system and reducing the amount of ethylene polymerisation by-products.

2 cl, 2 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: catalytic complex of selective ethylene in 1-hexene trimerisation includes: a chromium (III) compound with a diphosphine ligand of the general formula [CrCl3((Ph2P(1,2-C6H4)P(Ph)(1,2-C6H4)CH=CH2)-(L)], where L - tetrahydrofuran or water, chloride of tris(tetrahydrofuran)chromium is applied as a chromium (III) source, a solution of methylalumoxane is applied as an activator, with the complex components being in the following molar ratio: chromium compounds: activator= 0.02-0.12%:99.88-99.98%.

EFFECT: high productivity of selective ethylene trimerisation.

2 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: catalyst of dicyclopentadiene polymerisation in the form of a ruthenium complex represents [1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(2-((2-dimethylaminoethylmethylamino)methyl))benzylidene)ruthenium of formula (I) The catalyst is obtained by the interaction of a ruthenium triphenylphosphine complex with 1,1-diphenyl-2-propin-1-ol in tetrahydrofurane or dioxane at a temperature of the solvent boiling in an inert atmosphere, then with tricyclohexylphosphine at room temperature in an inert atmosphere the formed indenylidene complex of ruthenium is extracted. The latter is successively subjected to interaction with 1,3-bis-(2,4,6-trimethylphenyl)-2-tricloromethylimidazolidine and 2-vinylbenzylamine, the formed product is extracted and dried.

EFFECT: extension of technological abilities in the process of polymerisation, and improvement of rheological, mechanical and thermal indices of the obtained polycyclopentadiene.

2 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: catalyst of polymerisation has the general formula (I)

where a novel substituent is selected from the group of aminostyrenes. It ensures fundamentally novel properties of the catalyst. The catalyst is obtained by the interaction of a triphenylphosphine complex of ruthenium with 1,1-diphenyl-2-propin-1-ol in tetrahydrofuran or dioxane at a temperature of the solvent boiling in an inert atmosphere, and then with tricyclohexylphospine at room temperature in an inert atmosphere, the formed ruthenium indenylidenic complex is extracted. The latter is successively subjected to interaction with 1,3-bis-(2,4,6-trimethylphenyl)-2- tricloromethylimidazolidine and respective aminostyrene with the formation of a target product.

EFFECT: reduction of the catalyst consumption, reduction of the time before beginning of the polymerisation process and improvement of rheological, mechanical and thermal indices of the obtained polydicyclopentadiene, which ensures obtaining the product from polydicyclopentadiene with high consumer properties.

2 cl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining a finely dispersed liquid form of a phthalocyanine catalyst for demercaptanisation of oil and gas condensate, which includes successive precipitation, in an aqueous medium, of products of sulphonation of cobalt phthalocyanine or chlorine-substituted derivatives thereof and cobalt phthalocyanine adducts or chlorine-substituted derivatives thereof with sulphuric acid - "sulphates" to form a mixture of disulphonic acids of cobalt phthalocyanine or chlorine-substituted derivatives thereof and finely dispersed cobalt phthalocyanine particles and chlorine-substituted derivatives thereof. The next treatment of the aqueous paste of the obtained mixture with alkanolamines results in dissolution, in water, of disulphonic acids of cobalt phthalocyanine or chlorine-substituted derivatives thereof and partial adsorption on the surface of particles of cobalt phthalocyanine or chlorine-substituted derivatives thereof to form a stable finely dispersed liquid form of the catalyst.

EFFECT: method of producing a catalyst for demercaptanisation of oil and gas condensate in a stable liquid form, with high catalytic activity, which avoids the need for preparation thereof by the consumer, improves labour conditions for the producer and the consumer of the product.

1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a catalyst composition for oligomerisation of ethylene and a method for oligomerisation using said catalyst. The catalyst composition contains (A) a catalytically active component obtained by combining (A1) a chromium compound and (A2) a ligand with the general structure R1R2P-N(R3)-P(R4)-N(R5)-H, where R1, R2, R3, R4 and R5 are independently selected from (C1-C10)alkyl, substituted (C1-C10)alkyl, aryl and substituted aryl; (B) a modifier containing an organic or inorganic halide; and (C) an activator or cocatalyst. The modifier is selected from ammonium or phosphonium salts of the type [H4E]X, [H3ER]X, [H2ER2]X, [HER3]X or [ER4]X, where E=N or P, X=Cl, Br or I, and R = alkyl, cycloalkyl, acyl, aryl, alkenyl, alkynyl, or two, three or more links appropriately bonded; HX or RX; or ammonium salts based on noncyclic or cyclic amines. The modifier and the chromium compound are different compounds.

EFFECT: catalyst composition has high selectivity and high activity/cycle periodicity ratio for the technological process.

12 cl, 7 dwg, 2 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: claimed is a method of preparing a heterogeneous phthalocyanine catalyst for oxidation of sulphur-containing compounds by an activation of non-woven lavsan by microwave radiation with a frequency of 2450 MHz, power 500-2000 W for 3-15 minutes, processing the activated material in a solution of cobalt tetra-4-[(4'-carboxy)phenylsulpfanyl]phthalocyanine with a concentration of 0.2-0.6 g/l for 2-4 hours and further stand of the material in a sodium hydroxide solution at pH 8.0-8.5 for 40-80 minutes.

EFFECT: increased catalytic activity of the target product and simplification of the method of its preparation.

1 tbl

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