Reforming catalyst, containing hexaaluminate of hydrocarbons and reforming method

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the catalyst, containing the hexaaluminate, in which there is the hexaaluminate containing phase, including cobalt in the amount from 2 up to 15 moll. % and at least one other element, selected from the group consisting of lanthanum, barium and strontium in the amount from 2 up to 25 moll. %, and the amount of aluminium is from 70 up to 90 moll. %. Besides the hexaaluminate containing phase in the catalyst, there is from 0 up to 50 wt % of the accessory oxide phase. The proposed catalyst production method contains according to the invention the aluminium source preparing, preferably alumina and/or aluminium hydroxide (boehmite), in the form of dispersible primary particles ≤with the size 500 nm; placing into contact of the fine aluminium source to the fusible or soluble cobalt containing compound, and at least one soluble or fused salt of the metal, selected from the group consisting the barium, lanthanum and strontium; careful mixing of the aluminium source with dissolved, or, respectively, molten metal salts; the mixture drying; the mixture low-temperature calcination; moulding, or respectively shaping. Besides, the invention relates to the gas reforming method, containing more than 70 vol. % of hydrocarbons, preferably methane and in the presence of carbon dioxide, with the hexaaluminate catalyst, which is heated at the contact with gas to be reformed at the temperature above 700°C, preferably above 800°C, more preferably above 900°C in the reactor, the pressure higher than 5 bar, preferably higher than 10 bar, more preferably above 15 bar, the space velocity of the reforming gas, placed into contact to the catalyst, is in the range from 500 to 20,000 h-1, and the catalyst containing hexaaluminate, contains the cobalt and at least one other metal, selected from the group, consisting of barium, strontium and lanthanum.

EFFECT: catalyst with the low lanthanum content, with high coking resistance and high catalytic activity, using over the long periods of time in extremely hard process conditions.

15 cl, 4 dwg, 6 tbl

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to catalytic cracking of hydrocarbons. Described is method of obtaining light olefins by catalytic cracking of hydrocarbons with 4 or more than 4 carbon atoms, with boiling point 30-200°C, in presence of catalyst, characterised by the fact that 0.01-5.0 wt % of MnO2 and 1-15 wt % of P2O5 are simultaneously added to catalyst components, where catalyst components contain 1-50 wt % of zeolite, 21-70 wt % of clay and 1-40 wt % of inorganic oxide and where both MnO2 and P2O5 are introduced into (modify) each of catalyst components, such as ZSM-5 zeolite, clay and inorganic oxide.

EFFECT: increase of product outcome.

10 cl, 1 dwg, 6 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to chemistry and can be used in removing sulphur oxides from recycle gases in the presence of a catalyst. The catalyst contains an active part, containing magnesium and calcium oxides, deposited on an alumina support. The active part additionally contains manganese oxide in the following ratio of components, wt %: magnesium and calcium oxide 6.0 to 20.0, manganese oxide 0.03 to 1.00, carrier - the rest to 100. Aluminium oxide trihydrate, annealed at temperature ranging from 750 to 900°C and saturated with active components at pH 0.5 to 2.5, is used as the carrier.

EFFECT: invention simplifies technology of producing catalyst, reduces damaging effect on the environment, reduces cost of catalyst.

3 cl, 4 ex

The invention relates to the purification of gases containing carbon monoxide

The invention relates to the field of sorption technology, in particular to the adsorbent-catalysts having high strength and high ionoobmennoe ability and catalytic activity, and can be used to absorb harmful substances from aqueous solutions and drinking water, and for removing carbon dioxide from gas streams

The invention relates to the field of organic synthesis, namely to obtain methylated napolov, in particular a mixture of 2-methyl-1-naphthol, 2,6-dimethyl-1-naphthol used as feedstock for the synthesis of 2-methyl-1,4-naphthoquinone - synthetic vitamin K3(menadione)

FIELD: power industry.

SUBSTANCE: invention relates to supply of thermal energy and can be used in chemical industry and gasification. The method of thermal energy supply into the system of heat treatment (104) of raw materials includes: gasification of dry raw materials in the first reactor (106) by the flow of gasifying gas (FGG) with obtaining of the first gas flow (PFG); oxidation in the second reactor (108) with obtaining of the second gas flow (DFG); activation in the third reactor of oxygen carriers with obtaining of excessive thermal energy; supply of a part of thermal energy of the named second gas flow (DFG) and/or excess heat from activation of oxygen carriers into the system (104) of heat treatments of raw materials; and increase of temperature of flow of gasifying gas (FGG) at least by one part of excess heat from activation of oxygen carriers for increase of temperature of the named flow of gasifying gas (FGG) up to the gasification temperature.

EFFECT: invention allows to decrease energy consumption, negative environment impact, and also to exclude continuous external supply.

18 cl, 2 dwg

FIELD: power industry.

SUBSTANCE: invention can be used to generate electric power from feed stock containing carbon, specifically from coal and/or dry biomass. Method of power generating from feed stock containing carbon includes stage of dry feed stock gasification in the gasification reactor by gas flow mainly containing CO2, at high temperature with generation of the first gas flow mainly containing molecules of carbon monoxide; oxidation in oxidating reactor by oxygen carriers in oxidized condition (MeO) at high temperature with generation of the second gas flow containing CO2 and oxygen carriers in restored condition (Me); activation in activation reactor of the oxygen carriers in restored condition by the activation gas flow containing oxygen components, and with creation of the oxygen lean activation gas flow; and conversion of thermal energy part of the activation flow in the electric power.

EFFECT: invention generates electric power from biomass containing carbon, and creation of the valuable product of common energy to supply the electric power generating system, such as turbine alternator.

15 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing ethanol by reducing acetic acid, which includes passing a gaseous stream containing hydrogen and acetic acid in vapour phase with molar ratio of oxygen to acetic acid of at least 4:1, at temperature of about 225°C to 300°C over a hydrogenation catalyst containing platinum and tin, dispersed on a modified substrate. Said modified substrate includes substrate material and an effective amount of a substrate modifier selected from a group consisting of metasilicates of alkali-earth metals, precursors thereof and mixtures thereof.

EFFECT: invention enables to carry out the method with high selectivity, high activity and longer service life of the catalyst.

12 cl, 12 dwg, 5 tbl, 16 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a catalytic exhaust gas neutraliser. The catalytic exhaust gas neutraliser comprises a substrate, a catalytic coating layer of a porous support on the substrate surface and a noble metal catalyst deposited on the porous support of the catalytic coating layer. The catalytic coating layer is formed as a laminated structure having an upper layer and a lower layer. The noble metal catalyst deposited in the upper layer is Rh particles. The noble metal catalyst deposited in the lower layer is Pd particles. The porous support of the lower layer is formed by a composite oxide ACZ consisting of aluminium oxide (Al2O3), cerium oxide (CeO2) and zirconium oxide (ZrO2). The composite oxide ACZ is obtained using an alcoholate technique. The starting material in said alcoholate technique is a metal alcoholate and a metal salt. The composite oxide ACZ, obtained via an alcoholate method, is a composite oxide in which Al, Ce and Zr become almost homogeneously mixed on the atomic or molecular level of the oxide. The atomic ratio Ce/Zr in the composite oxide ACZ is not more than 0.6.

EFFECT: catalyst longevity, maintaining stable catalytic activity at low temperatures, high oxygen-accumulating capacity.

10 cl, 5 dwg, 3 tbl, 9 ex

FIELD: physics, atomic power.

SUBSTANCE: invention relates to means of providing safe operation of heat-transfer loops of liquid metal cooled nuclear reactors. The apparatus for extracting hydrogen from oxygenless gas media includes a housing 1, a reaction chamber 3 placed inside said housing, encircling a distribution pipe 2 and having at least one perforated section 4 filled with granules 5 of an oxygen-containing material, a pipe 7 for feeding an oxygenless gas medium containing hydrogen into the reaction chamber and a pipe 8 for feeding an oxygen-containing gas medium into the housing for restoring oxidative properties of the oxygen-containing material, connected to an inlet pipe 2, an outlet pipe 9 for outlet of spent gas medium from the reaction chamber and an operating mode switching system comprising three shut-off valves, the first 10 of which is installed on the pipe 7 for feeding the hydrogen-containing oxygenless gas medium, the second 11 - on the pipe 8 for feeding the oxygen-containing gas medium and the third 12 - on the outlet pipe 9.

EFFECT: invention improves the efficiency of removing gaseous hydrogen from an oxygenless hydrogen-containing gas medium in liquid metal cooled nuclear reactors.

15 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: group of inventions relates to catalytic materials for chemical reactors. Said catalytic materials contain hybrid inorganic/polymer carriers and preliminarily obtained molecular catalysts immobilised on them. Hybrid inorganic/polymer carrier consists of hybrid inorganic/polymer compound, in which organic polymers are chemically bound with at least one inorganic compound, selected from the group, consisting of silicic acid compound, tungstic acid compound, molybdic acid compound and stannic acid, and immobilised preliminarily obtained molecular catalyst contains at least one atom or ion of transition metal, selected from groups IB, IIB, IIIB, IVB, VB, VIB, VIIB, VIII of periodic system of elements, which one or several ligand(s) is(are) bound with.

EFFECT: claimed catalytic material acts as heterogenic catalyst with selectivity, comparable with selectivity, observed in homogenous phase, with said catalyst being insoluble in reaction solvent and easily removable from reaction mixture.

27 cl, 3 tbl, 7 ex

FIELD: nanotechnology.

SUBSTANCE: invention relates to a method of production of carbon nanofibres and/or carbon nanotubes. The method comprises the pyrolysis of dispersed cellulosic and/or carbohydrate substrate impregnated with a compound of the element or elements, which metal or alloy, respectively, is able to form carbides in the substantially oxygen-free atmosphere comprising a volatile silicon compound, optionally in the presence of carbon compound.

EFFECT: invention enables to obtain carbon nanotubes or nanofibres of a certain shape.

15 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to methods (versions) of oxidation of carbon monoxide (CO) and volatile organic compounds (VOC), as well as to a catalytic composition for the said processes. The methods include a stage of bringing tail gases of a method of obtaining purified terephthalic acid, containing water vapours and the said CO and VOC, in contact with a catalyst composition, containing a promoter based on a non-noble metal and a catalyst based on a non-noble metal, applied on an oxide carrier, which includes one or several materials, selected from aluminium oxide, silicon dioxide, zirconium dioxide, cerium dioxide and titanium dioxide. The said catalyst composition in fact does not contain platinum group metals, and the said VOC include one or several compounds, selected from methylacetate, methane, methylbromide, benzene, methanol, methylethylketone, butane and butene. The catalyst based on a non-noble metal is selected from the group, consisting of copper (Cu), iron (Fe), cobalt (Co), nickel (Ni) and chrome (Cr), and at least one promoter of the catalyst based on a non-noble metal is selected from the group, consisting of neodymium (Nd), barium (ba), cerium (Ce), lanthanum (La), praseodymium (Pr), magnesium (Mg), calcium (Ca), manganese (Mn), zinc (Zn), niobium (Nb), zirconium (Zr), molybdenum (Mo), tin (Sn), tantalum (Ta) and strontium (Sr).

EFFECT: elaboration of the alternative catalysts, demonstrating high activity and long-lasting quality.

13 cl, 11 dwg, 14 ex

FIELD: chemistry.

SUBSTANCE: invention relates to catalysis. Described is an olefin polymerisation catalyst comprising: (I) a clad catalyst support comprising (a) a core which comprises alumina particles and (b) about 1-40 wt % silica, based on the weight of said cladding of the clad catalyst support on the surface of said core; said clad catalyst support having a BET surface area of not less than 20 m2/g; porosity of at least about 0.2 cm3/g; and a normalised sulphur uptake (NSU) value of up to 25 mcg/m2; and (II) 0.1-10 wt % , based on the weight of said catalyst, of catalytically active, with respect to olefin polymerisation, elemental transition metal, compound thereof, or complex thereof, wherein said transition metal is selected form Fe, Cr, Ti, Zr, Hf, Ni or mixture thereof, on the surface of said clad catalyst support. Methods of producing said catalyst and use thereof are described.

EFFECT: high catalyst activity.

21 cl, 2 dwg, 3 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: claimed invention provides process of production of methanol, dimethyl ether as main products and low-carbon olefin as byproduct from synthesis gas, in which said process contains stage of contact of synthesis-gas with catalyst. Catalyst contains amorphous alloy, consisting of first component A1 and second component, with second component representing one or several elements or their oxides, selected from group IA, IIIA, IVA, VA, IB, IIB, IVB, VB, VIB, VIIB, VIII and a series of lanthanides of periodic table of elements, and said second component is different from first component A1. Conditions for conversion have reaction temperature 200-270°C, reaction pressure 1-6 MPa, volume rate of synthesis-gas supply 1000-10000 ml/g·hour and molar ratio between H2 and CO in synthesis-gas from 1 to 3.

EFFECT: in accordance with said process synthesis-gas can be converted into methanol, dimethyl ether and low-carbon olefin with high degree of CO conversion, high selectivity of target product and high availability of carbon.

19 cl, 3 dwg, 3 tbl, 14 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 a method of treating a sulphur-containing gas and a hydrogenation catalyst used therefor. Described is a hydrogenation catalyst which includes, as an active component, nickel oxide, cobalt oxide and molybdenum oxide or tungsten oxide. One or more compounds selected from iron (II) sulphate, iron (III) nitrate and iron (III) sulphate are added as a deoxidising auxiliary agent. TiO2 and γ-Al2O3 are added in the form of a dry colloid of a titanium-aluminium compound. Also described is a method of treating a sulphur-containing gas with a hydrogenation catalyst.

EFFECT: catalyst has high sulphur dioxide hydrogenation activity and a low operating temperature.

12 cl, 2 dwg, 14 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing a catalyst for deep hydrofining of oil fractions. The present method includes impregnating an aluminium oxide support with a solution of compounds of metals of groups VIII and VI with pH of the impregnating solution of 1.5-5.0, vacuum treatment of the support before contact thereof with the impregnating solution, using impregnation at high temperature. The starting compounds used for preparing the impregnating solution are sodium salts Mo and one of modifiers X selected from the group (B, P, Si, V, Zn, Ge, Sn), which are soluble in water in molar ratio Mo/X=12/1, after which the solution is passed through a column with a cationite in H+ form and Co or Ni acetate is added to said solution.

EFFECT: disclosed method enables to obtain catalysts having high activity and selectivity with respect to hydrodesulfurisation, hydrodenitrogenation and hydrogenation of olefins and aromatic compounds.

2 cl, 5 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: method includes leaching the obtained cinder with a chloride solution, which contains an oxidant or a mixture of oxidants, to extract platinum and/or palladium from the leaching solution. Oxidising roasting of the catalyst is carried out at 500-800°C. Leaching is carried out with saturated aluminium chloride solution in an apparatus with a fixed bed of the product being leached, followed by extraction of platinum and/or palladium from the leaching solution by sorption on an anion-exchange resin.

EFFECT: method improves effectiveness of treating deactivated catalysts and simplifies the process scheme.

6 cl, 1 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to the application of a catalyst, which contains a monolith and a layer of the catalyst, for the dehydrogenation of alkanes to alkenes or aromatisation in dehydrogenation. The monolith consists of a catalytically inert material with BET surface area <10 m2/g, with the catalyst layer, applied on the monolith, containing platinum and tin and/or rhenium and if necessary other metals on an oxide carrier material, the catalyst layer thickness constitutes from 5 to 500 microns. In addition, the hour volume rate of gas supply constitutes from 500 to 2000 h-1. The invention also relates to methods of the dehydrogenation of alkanes to alkenes and aromatisation in dehydrogenation with the application of the catalyst described above.

EFFECT: claimed application of the catalyst provides high conversions, volume productivity and selectivity.

14 cl, 13 tbl, 25 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

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