Method of preparing catalyst and catalyst for oxidising co

FIELD: chemistry.

SUBSTANCE: invention related to a method of producing a catalyst, involving pre-treatment of an inert block support made from Al-containing foil by calcining at temperature of (850-920)°C in an air current for (12-15) hours and depositing an intermediate coat on its surface at room temperature, said coat being modified aluminium oxide from a suspension containing aluminium hydroxide, aluminium nitrate, cerium nitrate, basalt flake from super-thin basalt fibre with elementary particle diameter of 1-3 mcm and length of up to 1000 mcm and water, heat treatment of the block with the intermediate coat in an air current at (680-700)°C and ageing for 70-90 minutes and depositing one or more catalytically active platinum group metals by water impregnation of their precursors, drying at (100-120)°C and final heat treatment at staged raise of temperature up to (350-400)°C and ageing for 5-6 hours. Wherein the intermediate coat is deposited from a suspension additionally containing cupric nitrate, cobalt nitrate and aluminium metasilicate of less than 10 mcm fraction in the following ratio of its components, wt %: aluminium hydroxide - (17.9-24.8), aluminium nitrate - (1.5-2.8), cerium nitrate - (5.1-9.8), cupric nitrate - (1.1-1.9), cobalt nitrate - (1.0-1.5), basalt scales - (1.2-2.5), aluminium metasilicate - (1.1-1.6), water - up to 100.

EFFECT: improved operational characteristics of block CO oxidation catalyst under the conditions of emergency gas purification, simplified catalyst preparation technology.

3 cl, 2 tbl, 18 ex

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: invention relates to a manufacturing method of a honeycomb ceramic unit for a catalytic neutraliser of exhaust gases, according to which to the ceramic unit from the main material there applied is a binding layer containing sodium silicate Na2O(SiO2)n or potassium silicate K2O(SiO2)n, or their mixture, above which there formed is at least one substrate layer for application of a catalyst, which contains a nanodispersed oxide of aluminium hydroxide (boehmite); for that purpose, a suspension layer is applied onto the second workpiece, which contains nanodispersed oxide of aluminium hydroxide; the workpiece with the applied suspension layer is dried; after that, the workpiece of the honeycomb ceramic unit with the applied substrate material is roasted, and therefore, a honeycomb ceramic unit for a catalytic neutraliser of exhaust gases is obtained. In addition, an application method of substrate onto the honeycomb ceramic unit for the catalytic neutraliser of exhaust gases, which applies this technology, is proposed.

EFFECT: improvement of passage of a gas flow through pores and channels of a substrate; increase and optimisation of a catalytic neutralisation process of substances in exhaust gases of diesel engines.

17 cl, 24 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining catalyst by covering cellular bodies with crystalline layer of metal with catalytic properties. Before application of crystalline layer coating on surfaces of cellular bodies said surfaces are preliminarily covered with precious metal powder, which has particles size <10 mcm. Cellular catalyst has twice covered surface with crystalline metal layer applied on surface. Between surface of cellular body (4) and crystalline metal layer (3) there is an intermediate layer (2) formed of burnt precious metal powder. Catalyst is applied for purification of spent gases and catalyst combustion. Method for application in flameless catalytic condensation boilers, further catalytic purification in thermal systems of spent air purification and as coating for membranes of fuel elements is also described.

EFFECT: preliminary covering with stainless steel coating results in obtaining product for long-term application, lower sensitivity, wider range of application temperatures and longer service term.

10 cl, 5 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to field of catalysis. Described is method of creating efficient platinum-free catalytic coating on ceramic units for neutralisation of waste gases of autotractor diesel engines, which includes formation of substrate with large value of specific surface on ceramic honeycomb carriers.

EFFECT: increase of catalyst activity.

2 cl, 4 dwg, 2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to NOx retaining materials. Described is a nitrogen oxide retaining catalyst, having: a substrate; a first porous oxide coating layer on the substrate, where said first porous oxide coating layer contains a nitrogen oxide retaining material which contains substrate particles of cerium oxide coated with barium carbonate; and a second porous oxide coating layer over the first porous oxide coating layer containing one platinum group metal, wherein the second porous oxide coating layer essentially does not contain platinum, cerium and barium, and said one platinum group metal is rhodium deposited on particles of a refractory metal oxide, which contain aluminium oxide doped with zirconium oxide in amount of up to 30%. Described is a method of producing said retaining material and use thereof.

EFFECT: high activity.

12 cl, 5 dwg, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to methods of obtaining block catalysts, catalysts of purification of exhaust gases (EG) of combustion engines (CE). Described is method of preparing catalyst for CE EG purification, in which for application of intermediate coating and active phase used is water suspension, which includes aluminium hydroxide - boehmite (AlOOH), reducing disaccharide and soluble salts of Ce, Zr, Y, La in form of nitric acid salts in proportion required for formation in coating of tetragonal phase Zr0.5Ce0,5O2, stable in temperature range 500-1000°C and ratio in coating (Me2O3+ZrO2+CeO2):γ-Al2O3-1:1, where - Me - Y, La, as well as one or several inorganic salts of platinum group metals, with thermal processing of coating being carried out simultaneously with reduction at temperature 550-1000°C. Obtained is catalyst for purification of exhaust gases of combustion engine with composition in wt %: Al2O3 - 6,0-7,0, (Me2O3+ZrO2+CeO2), where - Me - Y, La, - 6.0-7.0, including content of Me2O3, where - Me - Y, La,- 0.35-0.5 wt %. Active phase, in terms of platinum group metals is 0.07-0.08 wt %. Block carrier constitutes the remaining part to 100 wt %. Specific surface of coating after TP: 500°C - 100-120 m2/g, 800°C - 80-100 m2/g, 1000°C - 60-70 m2/g, 1200°C - 5-10 m2/g.

EFFECT: simplification of technology due to reduction of number of technological stages, time of their realisation, obtaining highly active and thermally stable catalyst.

5 cl, 1 tbl, 4 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to catalysts and production thereof. Described is a method of preparing a catalyst, which involves pre-treatment of an inert block support made from Al-containing foil by calcining at temperature of (850-920)°C in an air current for (12-15) hours, and then depositing onto its surface at room temperature an intermediate coating of modified aluminium oxide from a suspension which contains aluminium hydroxide, aluminium nitrate, zirconyl dihydrophosphate, lanthanum nitrate, zirconium oxide with predominant particle size of (1-3) mcm and microneedle-like wollastonite - natural calcium silicate CaSiO3 with characteristic ratio 1:d=(12-20):1 with microneedle length 1<20 mcm and water; heat treatment of the block with the intermediate coating is carried out in an air current at temperature of (620-650)°C and ageing for (1.8-2.0) h; and subsequent deposition of one or more catalytically active platinum-group metals, followed by reduction in a hydrogen current at temperature of (350-400)°C and ageing for (5-6) h, wherein the intermediate coating is deposited from a suspension, having the following ratio of components, wt %: aluminium hydroxide (pseudo-boehmite) - (10.1-16.3), aluminium nitrate - (5.2-8.9), zirconium oxide - (8.3-18.7), zirconyl dihydrophosphate (0.3-0.8), lanthanum nitrate - (0.5-1.0) and microneedle-like wollastonite - natural calcium silicate CaSiO3 with characteristic ratio 1:d=(12-20):1 with microneedle length l<20 mcm - (1.1-2.9), water - up to 100. Described is a catalyst which is prepared using said method, which includes a block metal support, an intermediate coating of modified aluminium oxide and an active phase of platinum-group noble metals deposited on the porous surface of the intermediate coating, said active phase containing (9-20) wt % Al2O3 modified as described above and having specific surface area of (120-140) m2/g, wherein components of the coating are in the following weight ratio (%): aluminium oxide (38.4-61.0), zirconium oxide (30.0-55.7), lanthanum oxide (0.8-1.2), zirconyl dihydrophosphate (1.2-2.2), calcium silicate (3.1-7.4).

EFFECT: high strength, water resistance and thermal stability of the obtained catalyst.

2 cl, 2 tbl, 9 ex

FIELD: oil and gas industry.

SUBSTANCE: method includes the following: supply of a flow of olefin naphtha (16), containing olefin and sulphur; hydraulic treatment of a flow of olefin naphtha in the first zone of desulphurisation (12) under the temperature of the first reaction efficient for conversion of a part of sulphur content into hydrogen sulfide to produce effluent that comes out from the first zone of desulphurisation (24); hydraulic treatment of effluent coming out without removal of hydrogen sulfide from the first zone of desulphurisation (24), in the second zone of desulphurisation (14) at the second higher temperature of reaction compared to the first stage of hydraulic treatment using a selective layerwise catalyst, efficient for desulphurisation of the effluent produced in the second zone of desulphurisation (32). At the same time the catalyst of the second zone of hydrodesulphurisation includes an inner nucleus and an active thin outer layer with thickness of 5-100 microns, surrounding the inner nucleus, besides, the tin outer layer contains active materials for desulphurisation.

EFFECT: using this invention makes it possible to reduce saturation of olegins and recombination of sulphur to mercaptans to the minimum.

11 cl, 1 ex, 3 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates catalysts and methods of producing said catalyst. Described is a method of preparing a catalyst, involving pre-treatment of an inert block support made from Al-containing foil by calcining at temperature of (850-920)°C in an air current for (12-15) hours and depositing an intermediate coat on its surface at room temperature, said coat being modified aluminium oxide from a suspension containing aluminium hydroxide, aluminium nitrate, cerium nitrate, basalt flake from super-thin basalt fibre with elementary particle diameter of 1-3 mcm and length of up to 1000 mcm and water, heat treatment of the block with the intermediate coat in an air current and depositing one or more catalytically active platinum group metals, said suspension having the following ratio of components, wt %: aluminium hydroxide - (22.0-32.0), aluminium nitrate - (2.0-4.0), cerium nitrate - (3.0-7.0), basalt fibre - (1.3-3.5), water - up to 100; heat treatment of the block with the intermediate coat is carried out at temperature of (660-700)°C and ageing for (70-90) minutes. Described is a catalyst prepared using the method described above, having a block metallic support, an intermediate coat of modified aluminium oxide and an active phase from platinum group noble metals deposited on the porous surface of the intermediate coat, containing (9.0-20.0) wt % modified Al2O3, having specific surface area of (120-140) m2/g, containing aluminium oxide, cerium oxide, the modified aluminium oxide additionally containing basalt, with the following ratio of components, wt %: aluminium oxide (73.2-90.5), cerium oxide (5.2-13.8), basalt (4.3-13.0).

EFFECT: catalyst with high mechanical strength and thermal stability is obtained.

2 cl, 2 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a composite catalyst for producing polyethylene, a method of producing said catalyst, as well as a method of producing polyethylene with wide molecular weight distribution using said composite catalyst. The composite catalyst consists of: (a) a first catalyst deposited on a substrate; (b) a polymer layer coating the first catalyst deposited on a substrate; and (c) a second catalyst deposited inside or on the polymer layer. The first and second catalysts are identical or different and are independently selected from a group consisting of Ziegler-Natta catalysts, chromium-based catalysts, metallocene catalysts, non-metallocene concentric catalysts and precursors thereof. The polymer carries polar functional groups. Content of the polymer ranges from 1 to 50 wt % of the total weight of the composite catalyst.

EFFECT: obtaining a composite catalyst which can be used in production of polyethylene with wide molecular weight distribution.

34 cl, 4 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing catalysts for cleaning diesel engine emissions. Described is a method of producing a catalyst for diesel soot after-burning, involving mixing a copper extract in n-caprylic acid and a molybdenum extract in isoamyl alcohol in a ratio which ensures content of metals in the obtained mixture which corresponds to the composition CuMoO4, subsequent removal of the solvent from the obtained mixture and pyrolysis thereof on air, wherein the obtained mixture of extracts is brought to total concentration of metals of 1.5-2.0 wt % using isoamyl alcohol; the diluted mixture is deposited on a substrate made from titanium or alloy thereof, which is treated by plasma-electrolytic oxidation in an aqueous electrolyte; the solvent is removed by heating the titanium substrate with the deposited mixture of extracts to 150°C for not less than 1 hour; subsequent pyrolysis is carried out at temperature 540-550°C for not less than 1 hour.

EFFECT: simple method of producing a catalyst on a metal substrate and high efficiency thereof while simultaneously improving quality and efficiency of the obtained catalyst.

2 cl, 3 dwg, 3 ex

Reforming catalyst // 2558150

FIELD: chemistry.

SUBSTANCE: invention relates to method of reforming with application of catalyst. Described is method of reforming hydrocarbons with water vapour, including contact of supplied gas in reactor of catalytic partial oxidation or installation for autothermal reforming. Reactor operates at temperature 800-1600°C and pressure of 20-100 bar. Egg shell type catalyst, consisting of active compound in form of alloy of nickel and one metal from iridium and ruthenium, on supporter, containing aluminium oxide, zirconium dioxide, magnesium oxide, titanium dioxide or their combinations. Catalyst has cylindrical shape and has one or several through holes, where distance from centre to external catalyst surface constitutes from 10 to 40 mm, catalyst height constitutes from 10 to 40 mm, with diameter of one or several through holes constituting from 3 to 30 mm. At least 90 wt % of iridium or ruthenium in catalyst are located in external envelope which has depth up to 10% of external catalyst surface or to 10% of periphery of one or several through holes of catalyst.

EFFECT: realisation of method of catalytic partial oxidation or autothermal reforming at reduced drop of pressure in catalyst layer without reduction of catalyst activity.

12 cl, 5 dwg, 2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining oxalate by gas-phase method with participation of CO, which includes the following stages: c) gas flow V, which contains NO and methanol and oxygen, is supplied in supergravitation reactor II with rotary layer and is subjected to reaction of oxidative etherification with formation of flow VI, which contains methylnitrire; flow VII of methylnitrite, obtained by separation of said flow VI, together with gaseous CO flow II is supplied into reactor for combination II, where it contacts with catalyst II with obtaining flow VIII of dimethyloxalate and gas phase flow IX, which contains NO, with separation of obtained dimethyloxalate flow VIII with obtaining dimethyloxalate I; d) gas flow IX, which contains NO, is optionally returned in recycle to stage c) for mixing with gas phase flow V, which contains NO, before supply into supergravitation reactor II with rotary layer; with rotor of supergravitation reactor II with rotary layer being connected with porous layer of filler; catalyst represents catalyst, which contains palladium, Pd, in quantity 0.01-1% counted per pure substance relative to weight of catalyst supporter.

EFFECT: method of obtaining of oxalate by gas phase method including CO is mainly aimed at solution of technical problem of low efficiency of application of nitrogen oxides or nitrous acid ethers, characteristic of known methods.

10 cl, 14 ex

FIELD: chemistry.

SUBSTANCE: invention relates to method of preparing oxide-polymetallic catalysts, containing metals of platinum group, for oxidative-vapour conversion of hydrocarbons with obtaining carbon oxide and hydrogen. Method includes processing NiO and CO3O4 with solutions of nitrates Al, Ce, Zr and compounds of palladium Pd(NH3)4Cl2, platinum H2[PtCl6]·6H2O and rhodium H3[RhCl6], with the following drying; coking obtained material in methane flow at 550°C, obtaining paste from said material, pseudoboehmite and tetraisopropoxylane, filling foam-nichrome pores with suspension from obtained material, removal of water at 80°C, calcinations for 3 hours in argon atmosphere at 1300°C, removal of carbon with water vapours at 600°C for 3 hours.

EFFECT: creation of highly efficient heterogeneous catalyst.

4 cl, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to producing hydrocarbons and, optionally, oxygenates of hydrocarbons. The process includes contacting a synthesis gas comprising hydrogen, carbon monoxide and N-containing contaminants selected from the group consisting of HCN, NH3, NO, RxNH3-x, where R is an organic group and x is 1, 2 or 3, with R being the same or different when x is 2 or 3, R1-CN, where R1 is an organic group, and heterocyclic compounds containing at least one nitrogen atom as a ring member of a heterocyclic ring of the heterocyclic compound, with the N-containing contaminants constituting, in total, at least 100 vppb but less than 1000000 vppb of the synthesis gas, at a temperature of at least 180°C and a pressure of at least 10 bar(a), with a particulate supported Fischer-Tropsch synthesis catalyst which comprises a catalyst support, Co in catalytically active form supported on the catalyst support, and a dopant selected from the group consisting of platinum (Pt), palladium (Pd), ruthenium (Ru), rhenium (Re) and a mixture of two or more thereof at a dopant level expressed by formula 1: , where w is expressed as g Ru/g Co; and w<0,019 g Ru/g Co; x is expressed as g Pd/g Co; y is expressed as g Pt/g Co; z is expressed as g Re/g Co; and z<0,005 g Re/g Co; and 0<a<1, to obtain hydrocarbons and, optionally, oxygenates of hydrocarbons, by means of Fischer-Tropsch synthesis reaction of the hydrogen with the carbon monoxide. The invention also relates to the use the said catalyst to produce hydrocarbons.

EFFECT: in process for producing hydrocarbons by means of the above method, high levels of nitrogen contaminants can be tolerated while maintaining good catalyst activity and low catalyst CH4 selectivity.

11 cl, 11 tbl, 24 ex

FIELD: chemistry.

SUBSTANCE: structured catalyst of steam conversion of steam and steam-oxygen conversion of acetone or ethanol for synthesis-gas obtaining represents heat-conducting carrier from iron-chromium-aluminium alloy, with active component based on complex mixed oxide, containing as minimum 4 metals, based on praseodymium-cerium-zirconium, doped with metal from the group of rare earth elements with applied active component from metals of the platinum group (Pt, Ru) and/or Ni. Structured catalyst has the general formula a[M1M2[AxPr0.3-xCe0.35Zr0.35]O2]+(100-a)[FCA], where: a equals from 5 to 15 wt %; x equals 0.05-0.25, A is selected from metals of rare earth elements La or Sm; M1, M2 are metals, where: M1 is Pt or Ru with content to 3 wt %; M2 is Ni with content to 6 wt %; FCA is heat-conducting carrier from iron-chromium-aluminium alloy.

EFFECT: high activity of structured catalysts, which make it possible to carry out process of steam conversion and steam-oxygen conversion of ethanol with high concentration of biofuels in mixture and with high loadings of reaction mixture supply.

3 cl, 11 ex, 9 tbl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to petrochemical analysis, in particular to method for manufacturing of catalyst for liquidphase hydration of 2',4',4-trinitrobenzanilide (TNBA) with obtainment of aromatic polyamine compounds widely used as intermediate products in production of dyes, heat-resistant polymers, synthesis of high-strength fibres, etc. The method for manufacturing of catalyst for liquidphase hydration of 2',4',4-TNBA includes impregnation of the cellular structure polyurethane matrix with ceramic slurry containing more than 30 wt % of α-aluminium oxide with subsequent drying at temperature of 100-120°C, tempering at temperature of 1050-1070°C, subsequent impregnation of the obtained high-porous cellular carrier by alumina sol (γ-Al2O3), drying at temperature of 100-120°C, tempering at temperature of 550-600°C, subsequent impregnation by aqueous solution of cobalt and iron nitrates at atmospheric temperature, tempering at 350-400°C, and upon tempering application of carbon nanotubes manufactured by methane pyrolysis at temperature less than 800°C, up to 0.15-0.20 wt % of the weight of the carrier with γ-Al2O3, then treatment with palladium nitrate solution, drying at temperature less than 120°C and tempering at temperature of 430-450°C, recovery of the obtained palladium oxide at the carrier by molecular hydrogen in nitrogen till palladium metal is obtained at temperature of 50-55°C.

EFFECT: reduction of the reaction duration, increase in the reaction rate due to increase of the catalyst specific surface, TNBA load to the catalyst, output of the target product.

4 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of catalytically active magnetically separable nanoparticles. Proposed method comprises synthesis of nanoparticles using compounds of transition metals. Synthesis consists in thermal decomposition of iron acetyl acetonate in the presence of polyphenilethylene pyridil dentrones or dendrimers of second, third or fourth generation with the group of dicarboxylate at focal point at heating to 60°C at the rate of 10°C to complete dissolution of dendrone of second generation with dicarboxylic group and/or dendrone of third generation with single carboxylic group and/or dendrimers. Then, heating is performed to 300°C and held for 1-2 hours with subsequent cooling to room temperature, flushing and settling by ethanol, dissolution in chloroform and reaction product treatment by the solution of transition metals and their reduction by hydrogen and/or sodium borane and/or super hydride.

EFFECT: catalytic nanoparticles with high conversion, selectively and stability.

5 cl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to methods of obtaining catalyst precursor, catalyst of Fischer-Tropsch synthesis and to method of Fischer-Tropsch synthesis itself. Method of obtaining precursor of catalyst of Fischer-Tropsch synthesis includes stages at which: (i) Fe (II) carboxilate solution is used, (ii) if molar ratio of carboxyl and carboxylate groups, which come into reaction or are capable of coming into reaction with iron, and Fe (II) in solution, used at stage (i), does not constitute, at least, 3:1, source of carboxyl or carboxilate group is added into the solution, for said molar ratio to constitute, at least, 3:1, until Fe (II) carboxylate oxidation is over at the following stage (iii), (iii) Fe (II) carboxylate is processed by oxidant to convert it into Fe (III) carboxilate solution in conditions, which exclude such oxidation simultaneously with dissolution of Fe(0), (iv) hydrolysis of Fe(III) carboxylate, obtained at stage (iii) and precipitation of one or several products of F(III) hydrolysis are carried out, (v) one or several products of hydrolysis, obtained at stage (iv) are reduced, and (vi) source of activator in form of soluble salt of transition metal and chemical activator in form of soluble salt of alkaline metal or alkaline-earth metal are added in the process pr after realisation of any of preceding stages to obtain precursor of catalyst of Fischer-Tropsch synthesis.

EFFECT: achievement of complete dissolution of Fe(0) in acidic solution, source of activator can be introduced before Fe(III) carboxylate hydrolysis.

15 cl, 7 dwg, 1 tbl, 14 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of catalysts for thermochemical conversion hydrocarbon and oxygen-containing fuels through heat of exhaust gases of internal combustion engines, which are a component part of hybrid power installations. Described is a catalyst for thermal recuperation of heat of exhaust gases of an internal combustion engine, having an active component deposited on a support which is a heat-conducting structured material located on flat panels consisting of exothermic and endothermic channels and consists of alternating flat and corrugated heat-conducting porous metal catalyst bands which form channels for passage of the reacting mixture.

EFFECT: high utilisation of heat in hybrid power installations.

3 cl, 3 ex, 3 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: present invention relates to a catalyst for cleaning exhaust gases of an internal combustion engine and a method of producing said catalyst. The catalyst for cleaning exhaust gases (1) according to the present invention contains particles which simultaneously contain carrier/promoter particles in cladding material (5), which include catalyst blocks (13) which contain particles of a noble metal (8) and carrier particles (9) as holding material for the particles of the noble metal (8), carrying particles of the noble metal (8); promoter blocks (14), for which there is contact with particles of the noble metal (8) and which contain particles of a first promoter (11), capable of accumulating and releasing oxygen; and cladding material (12) which encloses the catalyst blocks (13) and promoter blocks (14) and separates particles of the noble metal (8) and the carrier particles (9) in the catalyst blocks (13) from particles of the first promoter (11) in the promoter blocks (14). The catalyst for cleaning exhaust gases (1) contains particles of a second promoter (6), which are capable of accumulating and releasing oxygen and are not enclosed by the cladding material (12) in the particles, simultaneously containing carrier/promoter particles in the cladding material (5).

EFFECT: described is a method of producing a catalyst, which involves grinding composite particles separately or together and mixing thereof; described is a method of cleaning gases using the catalyst described above.

17 cl, 10 dwg, 5 tbl, 24 ex

FIELD: selective oxidation of carbon monoxide in hydrogen-containing stream.

SUBSTANCE: invention relates to method for selective oxidation of carbon monoxide to carbon dioxide in raw material containing hydrogen and carbon monoxide in presence of catalyst comprising platinum and iron. Catalyst may be treated with acid. Certain amount of free oxygen is blended with mixture containing hydrogen and carbon monoxide to provide second gaseous mixture having elevated ratio of oxygen/carbon monoxide. Second gaseous mixture is brought into contact with catalyst, containing substrate impregnated with platinum and iron. Carbon monoxide in the second gaseous mixture is almost fully converted to carbon dioxide, i.e. amount of carbon monoxide in product stream introduced into combustion cell is enough small and doesn't impact on catalyst operation characteristics.

EFFECT: production of hydrogen fuel for combustion cell with industrial advantages.

13 cl, 1 tbl, 4 ex

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