The catalyst for the oxidative conversion of methane

 

(57) Abstract:

The essence of the invention as catalyst for the oxidative conversion of methane to hydrocarbons C2-Sz apply composite material composition, wt.%: a 1.8-16.2 LnB6: 1,5-17,5 MeV: 80.0-84,7 Mao, where Ln is lanthanum, samarium. Me - calcium , barium. Characterization of the catalyst: the conversion of methane to 24.1-26.8. The selectivity of parafina C2-Sz 51,4-68.9%. table 2.

 

Same patents:

FIELD: industrial organic synthesis and catalysts.

SUBSTANCE: invention provides catalyst for synthesis of thiophene from furan and hydrogen sulfide, which catalyst contains 3.1-4.2 wt %: boron oxide supported by alumina. Catalyst is prepared via mixing boron acid solution with aluminum hydroxide followed by extrusion and heat treatment, said aluminum hydroxide being aluminum hydroxide with pseudoboehmite structure or mixture thereof with aluminum hydroxide prepared via thermochemical activation process. Thiophene production process is accomplished via furan/hydrogen sulfide reaction in presence of above-described catalyst at 300-350 sulfate, hydrogen sulfide-to-furan molar ratio (6-11):1, and furan feed rate 3.7 to 11.1 mole/h per 1 g catalyst.

EFFECT: increased thiophene formation selectivity to 98-100%.

4 cl, 1 tbl, 7 ex

FIELD: oxidation catalysts.

SUBSTANCE: invention relates to catalysts for deep oxidation of carbon monoxide and can be used to treat industrial enterprise mission gases and motor car exhaust. Catalyst of invention is intermetallide of general formula Al3M, where M is Ca or V.

EFFECT: increased catalytic activity.

2 ex

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention relates to copper-containing catalysts for low-temperature synthesis of methanol in fluidized bed at median pressure and provides catalyst, whose preparation involves impregnation and which contains oxides of copper, zinc, chromium, magnesium, aluminum, boron, and barium and has following molar ratio: CuO:ZnO:Cr2O3, MgO:Al2O3:B2O3:BaO = 1:0.3:(0.014-0.038):(0.047-0.119):(0.05-0.1):(0.007-0.014):(0.0292-0.054).

EFFECT: increased mechanical strength and wear resistance of catalyst.

1 tbl

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention relates to copper-containing catalysts for low-temperature synthesis of methanol in fluidized bed at low pressure and provides a wear-resistant catalyst, whose preparation involves impregnation and which contains oxides of copper, zinc, chromium, magnesium, aluminum, and boron and has following molar ratio: CuO:ZnO:Cr2O3, MgO:Al2O3:B2O3 = 1:0.3:(0.15-0.2):(0.1-0.025):(0.25-0.3):(0.08-0.1).

EFFECT: increased mechanical strength and wear resistance of catalyst.

1 tbl

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention relates to copper-containing catalysts for low-temperature synthesis of methanol in fluidized bed at high pressure and provides catalyst, whose preparation involves impregnation and which contains oxides of copper, zinc, chromium, magnesium, aluminum, boron, and barium and has following molar ratio: CuO:ZnO:Cr2O3, MgO:Al2O3:B2O3:BaO = 1:(0.7-1.1):(0.086-0.157):(0.05-0.15):(0.125-0.2):(0.018-0.029):(0.04-0.075).

EFFECT: increased mechanical strength and wear resistance of catalyst.

1 tbl

FIELD: technical chemistry; catalyst carriers for various heterogeneous processes in chemical industry.

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EFFECT: increased specific surface; enhanced heat resistance of carrier.

8 cl, 1 tbl, 5 ex

FIELD: reduction-oxidation catalysts.

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EFFECT: increased catalytic activity.

4 ex

FIELD: various-destination catalysts.

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EFFECT: simplified catalyst preparation technology, avoided noxious effluents and gas emissions, and assured preparation of high-activity, stable, and strong catalysts.

3 cl, 1 tbl, 16 ex

FIELD: petroleum processing catalysts.

SUBSTANCE: invention provides petroleum fraction hydrofining catalyst with following chemical analysis, wt %: CoO 2.5-4.0, MoO3 8.0-12.0, Na20.01-0.08, La2O3 1.5-4.0, P2O5 2.0-5.0, B2O3 0.5-3.0, Al2O3 - the balance.

EFFECT: enhanced hydrofining efficiency in cases of feedstock containing elevated amount of unsaturated hydrocarbons.

2 ex

FIELD: petroleum processing catalysts.

SUBSTANCE: catalyst designed for using in petroleum fraction hydrofining, which contains oxides of cobalt, molybdenum, phosphorus, lanthanum, boron, and aluminum, is prepared by mixing aluminum hydroxide with boric acid solution and nitric acid solution of lanthanum carbonate followed by drying, calcination, impregnation of resulting carrier with cobalt nitrate and ammonium paramolybdate solution in nitric acid at pH 2.0-3.5 and 40-80°C in presence of phosphoric acid followed by drying and calcination at elevated temperature.

EFFECT: enabled production of hydrogenate with reduced content of sulfur compounds.

2 ex

FIELD: petrochemical process catalysts.

SUBSTANCE: catalyst constitutes cements formed during heat treatment and depicted by general formula MeO·nAl2O3, where Me is at least one group IIA element and n is number from 1.0 to 6.0, containing modifying component selected from at least one oxide of magnesium, strontium, copper, zinc, indium, chromium, manganese, and strengthening additive: boron and/or phosphorus oxide. The following proportions of components are used, wt %: MeO 10.0-40.0, modifying component 1.0-5.0, boron and/or phosphorus oxide 0.5-5.0, and alumina - the balance. Catalyst is prepared by dry mixing of one group IIA element compounds, aluminum compounds, and strengthening additive followed by mechanochemical treatment on vibromill, molding of catalyst paste, drying, and calcination at 600-1200°C. Modifying additive is incorporated into catalyst by impregnation and succeeding calcination. Method of pyrolysis of hydrocarbon feedstock producing C2-C4-olefins is also described.

EFFECT: increased yield of lower olefins.

3 cl, 2 tbl, 18 ex

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention relates to copper-containing catalysts for low-temperature synthesis of methanol in fluidized bed at median pressure and provides catalyst, whose preparation involves impregnation and which contains oxides of copper, zinc, chromium, magnesium, aluminum, boron, and barium and has following molar ratio: CuO:ZnO:Cr2O3, MgO:Al2O3:B2O3:BaO = 1:0.3:(0.014-0.038):(0.047-0.119):(0.05-0.1):(0.007-0.014):(0.0292-0.054).

EFFECT: increased mechanical strength and wear resistance of catalyst.

1 tbl

FIELD: reduction-oxidation catalysts.

SUBSTANCE: invention relates to catalysts for deep oxidation of carbon monoxide that can be used to treat industrial emission gases and motor transport exhaust gases. Aluminum-based oxidation catalyst contains 1.3-5.1% of rare-earth and/or alkali-earth element and represents ultradisperse powder.

EFFECT: increased catalytic activity.

4 ex

FIELD: fuel combustion catalysts.

SUBSTANCE: invention provides catalyst containing active aluminum oxide, magnesium oxide, at least one platinum-group precious metal, and also at least one material capable of accumulating nitrogen oxides, said magnesium oxide forming homogenous mixed oxide with aluminum oxide in concentration ranging form about 1 to about 40 wt % based on total weight of mixed oxide. The use of catalyst is also disclosed.

EFFECT: increased heat resistance of catalyst and accelerated conversion of nitrogen oxides.

24 cl, 14 dwg, 3 tbl, 8 ex

FIELD: petrochemical process catalyst.

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16 cl, 5 dwg, 1 tbl, 6 ex

FIELD: petrochemical process catalysts.

SUBSTANCE: invention relates to chemistry of heterogeneous catalysts and is directed to production of high-octane gasoline component via alkylation of isobutane with butane-butylene fraction on heterogeneous catalysts. Solid catalyst represents porous superacid based on zirconium and/or hafnium metallosilicates promoted with salts of double- or triple-charged metal cations with double-charged anions and depicted by general formula (EO2·aSiO2)·b(McXd) wherein E = Zr and/or Hf, a=17-34; b=0.5 when c=1 and d=1, M= Ni2+, Zn2+, or ZrO2+, X=SO42- or ZrF62-; or b=0.1666 when c=2 and d=3, M=Sc3+, Y3+, or Ga3+ and X= SO42-, parameter "a" being allowed to deviate from indicated value to larger or lesser side by 20% and parameter "b" by 5%. High-octane gasoline component is produced as indicated above at temperature 348 to 375 K, pressure 1.7 to 2.5 MPa, isobutane-to-butenes molar ratio 10-15, and volume feed supply velocity between 6.4 and 8.5 g/mL catalyst/h. Catalyst can optionally be regenerated.

EFFECT: enhanced conversion, yield of alkylate, productivity, and prolonged catalyst lifetime.

7 cl, 4 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: aqueous suspension containing earth metal salt, powdered metal chloride and powdered transition metal oxide is made; aqueous suspension is made by dispersing in water the earth metal salt chosen from the group including barium and/or calcium and probably strontium or their combination. Water is added in powdered metal chloride, where powdered metal chloride is chosen from the group including Sn, Mg, Na, Li, Ba. Further powdered transition metal oxide is added being titanium oxide, to water; then plastic binder is added to until paste is formed; paste is dried up paste to powder; powder is heated up at raising temperature following preset temperature profile. Heated powder is baked to produce perovskite catalyst. Suspension contains mixed Ba and/or Ca and/or Sr (0.95mole) + TiO2 + metal chloride chosen from the group Sn, Mg, Na, Li, Ba in amount 0.05 mole.

EFFECT: simplified technology of catalyst producing.

19 cl, 14 ex, 2 tbl, 8 dwg

FIELD: chemistry.

SUBSTANCE: invention refers to catalyst preparation of the low temperature conversion of carbon oxide with water vapour including: mixing of the components containing copper and zinc; mechanic activation during passing-through of the gas mix containing ammonia, carbon dioxide and water vapour; additional activation with pass of water vapour containing the additives of alkali metals carbonates and calcium aluminate at mass ratio (on oxide basis): CuO:ZnO:CaAl2O4:Me2O-(42-60):(24-42):(13-15):(1-3), where Me-K, Rb, Cs; 4) pellets moulding and calcination.

EFFECT: enhancing of catalyst selectivity and durability at retaining of its high activity.

1 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: described is catalyst for isomerisation of xylols, which includes in wt %: zeolite ZSM-5 - 10-35, calcium 0.05-1.0, calculated per zeolite, sodium 0.05-0.12, calculated per zeolite, aluminium oxide - the remaining part. Also described is method of preparing said catalyst, which includes mixing of aluminium hydroxide with zeolite ZSM-5, processing of obtained mixture with water solutions of calcium and, possibly, sodium compounds, with following forming and burning of obtained extrudates.

EFFECT: ensuring of xylol isomerisation until equilibrium composition of isomer is achieved, reduction of xylol loss at isomerisation temperature 400-460°C, increase of level of ethyl benzene, n-Nona and cumene conversion.

3 cl, 1 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: catalysts for preparation of biofuel by reesterification of vegetable oil with alcohol represent composition based on hexaaluminate (MAl12O19) having magnetoplumbite or β-Al2O3 whereat: M - Ba or Sr, or La, or having spinel structure (MR2O4) whereat: M - Ca or Sr, or Ba, whereat R contains Y or La, or composition based on MgO+R2O3+solid solution R2-xMgxO3 with hexagonal structure whereat R contains Y or La, x=0.05÷0.12. The method for catalysts preparation includes precipitation of mixed solution of M and Al nitrates whereat M contains Ba or Sr, or La at constant values of pH 7.5-8.0 and temperature with water solution of NH4HCO3, or precipitation of mixed solution of M and R whereat M = Ca or Sr, or Ba, R contains Y or La at constant values pH equal to 9.9÷11.9 and temperature with water solution of KOH, or precipitation mixed solution of Mg and R nitrates at constant values of pH equal to 9.0-9.5 and temperature with water solution of KOH followed with stages of filtration, washing, drying and calcination. The method of biofuel preparation involves the reesterification of vegetable oil with alcohol implemented in the presence of the catalyst described above.

EFFECT: high level of the vegetable oil conversion.

13 cl, 1 tbl, 18 ex

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

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