Abstract: The present disclosure disclosures a graphene modified iron-based catalyst and preparation and application thereof for use in Fischer-Tropsch reaction, belonging to the technical field of catalytic conversion of synthesis gas. The catalyst consists of, by mass percent, 0.01-30% of graphene, 0-20% of promoter and 60-99.99% of iron oxide powder. The preparation process of the catalyst is as follows: the graphene, the iron oxide powder and the promoter are sequentially placed in an aqueous solution for ultrasonic treatment and stirring, and then rotary evaporation, drying and calcining are conducted. The preparation method is simple. The catalyst shows excellent activity in the Fischer-Tropsch reaction, and maintains a high CO conversion rate of 90% or above for a long time at a very high reaction space velocity; meanwhile, the alkane content in a product is low, and an olefin-alkane ratio can reach 14, thus having an extremely high industrial application value.

Abstract: Methods are provided for forming an electrode. The method can comprises: thermally reducing GeO2 powders at a reducing temperature of 300° C. to 600° C. to produce Ge particles; mixing the Ge particles with an organic binder and a carbon source; and pressing the Ge particles with the binder and the carbon source to form the electrode. Electrodes are also provided that include a plurality of microparticles comprising Ge grains, an organic binder, and a carbon source, wherein the Ge grains comprise cubic Ge and are bonded together to form Ge particles, and wherein the Ge grains define nanopores within the electrode.

Abstract: Present invention relates to sp2 carbon nanogranules with iron incorporated in it from heavy petroleum residue of a refinery and thereby utilizing the materials for improved synthesis of light olefins (C2-C4) from syngas in a single step Fischer Tropsch synthesis to lower olefins, (FTO). The efficient iron incorporated carbon nanogranules derived from low value heavy petroleum residue are very attractive as catalytic system for direct synthesis of light olefin (C2-C4) from syngas at CO conversion up to 30%.

Abstract: This invention is directed to novel mixed transition metal iron (II/III) catalysts for the extraction of oxygen from CO2 and the selective reaction with organic compounds.

Abstract: A Fischer-Tropsch catalyst, useful for conversion of synthesis gas to olefins, is prepared from a catalyst precursor composition including iron oxide and an alkali metal on a substantially inert support, and then treated by a process including as ordered steps (1) reduction in a hydrogen-containing atmosphere at a pressure of 0.1 to 1 M Pa and a temperature from 280° C. to 450° C.; (2) carburization in a carbon monoxide-containing atmosphere at a pressure from 0.1 to 1 M Pa and a temperature from 200° C. to less than 340° C.; and (3) conditioning in a hydrogen- and carbon monoxide-containing atmosphere at a pressure from 0.1 to 2 MPa and a temperature from 280° C. to 340° C.

Abstract: A process for producing fuel cell catalysts includes a step (I) of heating a carbonitride of a transition metal in an inert gas containing oxygen, and a step (II) of heating the product from the step (I) in an inert gas that does not substantially contain oxygen.

Abstract: Disclosed is a process for converting a reactant composition comprising H2 and CO to a product comprising at least one aliphatic hydrocarbon having at least about 5 carbon atoms, the process comprising: flowing the reactant composition through a microchannel reactor in contact with a Fischer-Tropsch catalyst to convert the reactant composition to the product, the microchannel reactor comprising a plurality of process microchannels containing the catalyst; transferring heat from the process microchannels to a heat exchanger; and removing the product from the microchannel reactor; the process producing at least about 0.5 gram of aliphatic hydrocarbon having at least about 5 carbon atoms per gram of catalyst per hour; the selectivity to methane in the product being less than about 25%. Also disclosed is a supported catalyst comprising Co, and a microchannel reactor comprising at least one process microchannel and at least one adjacent heat exchange zone.

Abstract: Catalyst compositions comprising molybdenum, sulfur and an alkali metal ion supported on a nanofibrous, mesoporous carbon molecular sieve are useful for converting syngas to higher alcohols. The compositions are produced via impregnation and may enhance selectivity to ethanol in particular.

Abstract: The present invention relates to a process for producing a catalyst for carrying out methanation reactions. The production of the catalyst is based on contacting of a hydrotalcite-comprising starting material with a fusible metal salt. The compounds brought into contact with one another are intimately mixed, thermally treated so that the metal salt fraction melts and subsequently subjected to a low-temperature calcination step and a high-temperature calcination step. The metal salt melt comprises at least one metal selected from the group consisting of K, La, Fe, Co, Ni, Cu and Ce, preferably Ni. The metal salt melt more preferably comprises/contains nickel nitrate hexahydrate. The hydrotalcite-comprising starting material is preferably hydrotalcite or a hydrotalcite-like compound as starting material, and the hydrotalcite-comprising starting material preferably comprises magnesium and aluminum as metal species.

Abstract: The invention relates to a process for producing a protected reduced supported metal catalyst powder, in particular catalysts used in a variety of chemical reactions, such as the hydrogenation of hydrocarbon compounds in petrochemical and oleo-chemical processes; the hydrogenation of unsaturated fats and oils, and unsaturated hydrocarbon resins; and in the Fischer Tropsch process. This invention also relates to a composition comprising said catalyst and a liquid. In accordance with the invention there is provided a process for preparing a protected, reduced metal catalyst on a support, wherein said supported catalyst is in the form of a powder, which process comprises contacting and mixing said supported catalyst with a liquid in an inert atmosphere and wherein the amount of liquid corresponds to up to five times the amount required for incipient wetness.

Abstract: Provided are a support for supporting a metal, a metal-supported catalyst, a methanation reaction apparatus, and a method relating thereto that realize effective methanation of carbon monoxide. The support for supporting a metal includes a carbonized material obtained by carbonizing raw materials containing an organic substance and a metal, in which the support is used for supporting a metal that exhibits a catalytic activity for a methanation reaction of carbon monoxide. The metal-supported catalyst includes: a support formed of a carbonized material obtained by carbonizing raw materials containing an organic substance and a metal; and a metal that exhibits a catalytic activity for a methanation reaction of carbon monoxide, the metal being supported on the support.

Abstract: The catalyst exhibiting hydrogen spillover effect relates to the composition of a catalyst exhibiting hydrogen spillover effect and to a process for preparing the catalyst. The catalyst has a reduced transition base metal of Group VIB or Group VIIIB, such as cobalt, nickel, molybdenum or tungsten, supported on a high porous carrier, such as saponite, the base metal being ion-exchanged with at least one precious metal of Group VIIIB. The process includes the steps of loading the base metal onto the support, reducing the base metal, preferably with H2 at 600° C., and thereafter ion-exchanging the precious metal with the base metal. Preferred examples of the catalyst include a saponite support loaded with about 10-20 wt % cobalt and about 0.1-1 wt % precious metal. The catalyst is optimized for reactions that occur in commercial processes at about 360-400° C., such as in hydrocracking.

Abstract: The present invention relates to processes and apparatuses for generating light olefins, methane and other higher-value gaseous hydrocarbons from “liquid” heavy hydrocarbon feedstocks.

Abstract: A catalyst suitable for manufacturing a mixture of alcohols from synthesis gas comprises a combination of nickel, two or more metals selected from ruthenium, palladium, gold, chromium, aluminum and tin, and at least one of an alkali metal or alkaline earth series metal as a promoter. The catalyst may be used in a process for converting synthesis gas wherein the primary product is a mixture of ethanol (EtOH), propanol (PrOH), and butanol (BuOH), optionally in conjunction with higher alcohols.

Abstract: A catalyst for manufacturing a mixture of alcohols from synthesis gas comprises a combination of nickel, molybdenum, at least one metal selected from the group consisting of palladium, ruthenium, chromium, gold, zirconium, and aluminium, and at least one of an alkali metal or alkaline earth series metal as a promoter. The catalyst may be used in a process for converting synthesis gas wherein the primary product is a mixture of ethanol (EtOH), propanol (PrOH), and butanol (BuOH), optionally in conjunction with higher alcohols.

Abstract: Use a transition metal-containing, Keggin-type heteropoly compound as a catalyst to convert synthesis gas to an alcohol, especially a C1-C6 alcohol.

Abstract: A catalyst for FT synthesis which, in the FT method, is high in a CO conversion and small in the formation of a gaseous component and can stably perform an FT synthesis reaction and enhance the productivity of hydrocarbons, and a method for producing hydrocarbons using the catalyst, are provided. A catalyst for Fischer-Tropsch synthesis comprising a support containing manganese carbonate as a main component, wherein the support contains at least one metal having an activity to the Fischer-Tropsch reaction; and a method for producing hydrocarbons using this catalyst.

Abstract: Use a transition metal-containing, Anderson-type heteropoly compound catalyst to convert synthesis gas to an oxygenate, especially an alcohol that contains from one carbon atom to six carbon atoms.

Abstract: An exemplary method for producing a catalyst is provided where the catalyst includes a catalyst support on which a metallic compound is loaded. An impurity content of the catalyst can be in a range of approximately 0.01 mass % to 0.15 mass %. In particular, the exemplary method can include pre-treating the catalyst support to lower an impurity concentration of the catalyst support, and loading the metallic compound on the catalyst support after the pretreatment procedure.

Abstract: The disclosed invention relates to a process for converting a reactant composition comprising H2 and CO to a product comprising at least one aliphatic hydrocarbon having at least about 5 carbon atoms, the process comprising: flowing the reactant composition through a microchannel reactor in contact with a Fischer-Tropsch catalyst to convert the reactant composition to the product, the microchannel reactor comprising a plurality of process microchannels containing the catalyst; transferring heat from the process microchannels to a heat exchanger; and removing the product from the microchannel reactor; the process producing at least about 0.5 gram of aliphatic hydrocarbon having at least about 5 carbon atoms per gram of catalyst per hour; the selectivity to methane in the product being less than about 25%. The disclosed invention also relates to a supported catalyst comprising Co, and a microchannel reactor comprising at least one process microchannel and at least one adjacent heat exchange zone.

Abstract: A process and system for producing high octane fuel from carbon dioxide and water is disclosed. The feedstock for the production line is industrial carbon dioxide and water, which may be of lower quality. The end product can be high octane gasoline, high cetane diesel or other liquid hydrocarbon mixtures suitable for driving conventional combustion engines or hydrocarbons suitable for further industrial processing or commercial use. Products, such as dimethyl ether or methanol may also be withdrawn from the production line. The process is nearly emission free and reprocesses all hydrocarbons not suitable for liquid fuel to form high octane products. The heat generated by exothermic reactions in the process is fully utilized as is the heat produced in the reprocessing of hydrocarbons not suitable for liquid fuel.

Abstract: Process for preparing olefins, which comprises the following steps: a) preparation of a synthesis gas comprising carbon monoxide and hydrogen, b) introduction of carbon dioxide recirculated from step d) into the synthesis gas during or after the preparation of synthesis gas as per step a), c) conversion of the synthesis gas having a hydrogen to carbon monoxide ratio of ?1.2:1 which is obtained in step b) into olefins in the presence of a Fischer-Tropsch catalyst, d) removal of the carbon dioxide comprised in the reaction product from step c), where the ratio of hydrogen to carbon monoxide in step c) is set via step b).

Abstract: The present invention relates to a process for producing a catalyst for carrying out methanation reactions. The production of the catalyst is based on contacting of a hydrotalcite-comprising starting material with a fusible metal salt. The compounds brought into contact with one another are intimately mixed, thermally treated so that the metal salt fraction melts and subsequently subjected to a low-temperature calcination step and a high-temperature calcination step. The metal salt melt comprises at least one metal selected from the group consisting of K, La, Fe, Co, Ni, Cu and Ce, preferably Ni. The metal salt melt more preferably comprises/contains nickel nitrate hexahydrate. The hydrotalcite-comprising starting material is preferably hydrotalcite or a hydrotalcite-like compound as starting material, and the hydrotalcite-comprising starting material preferably comprises magnesium and aluminum as metal species.

Abstract: A process for the preparation of an F-T catalyst in which the presence of alkaline earth metals is minimized in the support itself and in the processing conditions, in order to provide a catalyst with an alkaline earth metal content of less than 2000 ppm.

Abstract: An exemplary method for producing a catalyst is provided where the catalyst includes a catalyst support on which a metallic compound is loaded. An impurity content of the catalyst can be in a range of approximately 0.01 mass % to 0.15 mass %. In particular, the exemplary method can include pre-treating the catalyst support to lower an impurity concentration of the catalyst support, and loading the metallic compound on the catalyst support after the pretreatment procedure.

Abstract: Cryptomelane-type manganese oxide octahedral molecular sieves (OMS-2) supported Fe and Co catalysts are utilized in a method for producing hydrocarbons by a Fischer-Tropsch mechanism. The hydrocarbon producing method includes providing a catalyst of a manganese oxide-based octahedral molecular sieve nanofibers with an active catalyst component of at least one of iron, cobalt, nickel, copper, manganese, vanadium, zinc, and mixtures thereof, and further containing an alkali metal. The formation of iron carbides and cobalt carbides by exposing the catalyst to conditions sufficient to form those carbides is also taught. After the catalyst has been appropriately treated, a carbon source and a hydrogen source are provided and contacted with the catalyst to thereby form a hydrocarbon containing product. The catalyst have high catalytic activity and selectivity (75%) for C2+ hydrocarbons in both CO hydrogenation and CO2 hydrogenation.

Abstract: A method for forming a cobalt-containing Fischer-Tropsch catalyst involves precipitating a cobalt oxy-hydroxycarbonate species by turbulent mixing, during which a basic solution collides with an acidic solution comprising cobalt. The method further involves depositing the cobalt oxy-hydroxycarbonate species onto an acidic support to provide a catalyst comprising cobalt and the acidic support. The acidic support comprises a zeolite, a molecular sieve, or combinations thereof.

Abstract: A process for the synthesis of hydrocarbons by the Fisher Tropsch process includes reacting a mixture of carbon monoxide and hydrogen at elevated temperature and pressure in the presence of a catalyst including 15-50% wt cobalt at least partially in elemental form, supported on an oxidic support of aluminium, oxygen and 0.5-10% wt lithium, where the oxidic support includes lithium oxides and >75% wt of the lithium oxides are lithium aluminate spinel, LiAl5O8.

Abstract: A method for forming a cobalt-containing Fischer-Tropsch catalyst involves precipitating a cobalt oxy-hydroxycarbonate species by turbulent mixing, during which a basic solution collides with an acidic solution comprising cobalt. The method further involves depositing the cobalt oxy-hydroxycarbonate species onto a support material to provide a catalyst comprising cobalt and the support material. The support material comprises one or more of alumina, silica, magnesia, titania, zirconia, ceria-zirconia, and magnesium aluminate.

Abstract: An exemplary method for producing a catalyst is provided where the catalyst includes a catalyst support on which a metallic compound is loaded. An impurity content of the catalyst can be in a range of approximately 0.01 mass % to 0.15 mass %. In particular, the exemplary method can include pre-treating the catalyst support to lower an impurity concentration of the catalyst support, and loading the metallic compound on the catalyst support after the pretreatment procedure.

Abstract: The present invention provides a process for preparing methanol, dimethyl ether, and low carbon olefins from syngas, wherein the process comprises the step of contacting syngas with a catalyst under the conditions for converting the syngas into methanol, dimethyl ether, and low carbon olefins, characterized in that, the catalyst contains an amorphous alloy consisting of a first component Al and a second component, said second component being one or more elements or oxides thereof selected from Group IA, IIIA, IVA, VA, IB, IIB, IVB, VB, VIIB, VIIB, VIII, and Lanthanide series of the Periodic Table of Elements, and said second component being different from the first component Al. According to the present process, the syngas can be converted into methanol, dimethyl ether, and low carbon olefins in a high CO conversion, a high selectivity of the target product, and high carbon availability.

Abstract: This invention relates to a hydrocarbon synthesis process. More particularly, but not exclusively, this invention relates to a Fischer Tropsch Process employing an activated catalyst and to the use of such an activated catalyst, wherein the Fischer Tropsch Process conditions favour the attainment of a low acid selectivity. More particularly the invention relates to a three-phase low temperature Fischer Tropsch (LTFT) process wherein a feed of H2 and CO are converted to hydrocarbons and possible oxygenates thereof by contacting the H2 and CO in the presence of an iron-based Fischer Tropsch catalyst in a reaction zone, wherein the molar ratio of H2:CO in the feed is from 0.5 and less than 1.

Abstract: At least one embodiment of the inventive technology focuses on a new composition that comprises hexagonally close packed molybdenum carbide crystals, in addition to metallic nickel crystals and/or sodium, and having use as a catalyst in a Fischer-Tropsch process to produce alcohol. At least one embodiment of a related aspect of the inventive technology is a Fischer-Tropsch reaction to produce alcohols from carbon monoxide and hydrogen using the aforementioned composition to catalyze reactions producing higher alcohols.

Abstract: A process for selective oxidative dehydrogenation of a hydrogen-containing CO mixed gas, comprising contacting a hydrogen-containing CO mixed gas raw material with at least one catalyst entity having an increased activity gradient disposed in a reactor under at least one reaction condition chosen from a reaction temperature ranging from 100 to 300° C., a volume space velocity ranging from 100 to 10000 h?1, and a reaction pressure ranging from ?0.08 to 5.0 MPa, wherein the molar ratio of oxygen to hydrogen in the raw material ranges from 0.5:1 to 5:1.

Abstract: A method of: introducing hydrogen and a feed gas containing at least 50 vol % carbon dioxide into a reactor containing a Fischer-Tropsch catalyst; and heating the hydrogen and carbon dioxide to a temperature of at least about 190° C. to produce hydrocarbons in the reactor. An apparatus having: a reaction vessel for containing a Fischer-Tropsch catalyst, capable of heating gases to at least about 190° C.; a hydrogen delivery system feeding into the reaction vessel; a carbon dioxide delivery system for delivering a feed gas containing at least 50 vol % carbon dioxide feeding into the reaction vessel; and a trap for collecting hydrocarbons generated in the reaction vessel.

Abstract: A process and apparatus for preparing a synthesis gas suitable for feeding to a suitable hydrocarbon production reactor, such as a Fischer Tropsch reactor is described. According to one aspect, the process and apparatus utilize heat exchangers that thermally integrate the reaction steps such that heat generated by exothermic reactions, e.g., combustion, are arranged closely to the heat sinks, e.g., cool methane, water and air, to minimize heat loss and maximize heat recovery. Effectively, this thermal integration eliminates excess piping throughout, reduces initial capital and operating costs, provides built-in passive temperature control, and improves synthesis gas production efficiencies.

Abstract: A joint process for preparing alcohol/ether mixtures, alcohol/hydrocarbon mixtures and synthesizing ammonia is disclosed. In particular, a process of converting CO and CO2 present in the feed gas of ammonia synthesis, comprising H2 and N2 as major components, into useful co-products is disclosed. The process is characterized in that the alcohol/ether forming reaction is firstly carried out by using a copper series catalyst, then the alcohol/hydrocarbon forming reaction is carried out by using an iron series catalyst, the individually formed alcohol/ether and alcohol/hydrocarbon products are separated by water cooling and condensing, and discharged into corresponding storage tanks, and the remaining gas, in which the amount of CO and CO2 is less than or equal to 10 ppm, is fed into the ammonia synthesis system.

Abstract: The disclosed invention relates to a process and apparatus for converting natural gas to higher molecular weight hydrocarbons. The process includes steam reforming to form synthesis gas followed by a Fischer-Tropsch reaction to convert the synthesis gas to the high molecular weight hydrocarbons. The reforming and Fischer-Tropsch reactions are conducted in microchannel reactors. The higher molecular weight hydrocarbons may be further treated to form hydrocarbon products such as middle distillate fuels, lubricating oils, and the like. The apparatus includes vessels containing SMR microchannel reactors and Fischer-Tropsch microchannel reactors. A composition comprising a mixture of olefins and paraffins is disclosed.

Abstract: Gasses containing carbon monoxide and hydrogen are converted into hydrocarbons using a reactor vessel having a liquid, a catalyst dispersed in the liquid, and a sonic mixing system interfaced with the reactor vessel. The sonic mixing system is used to agitate the mixture. In combination with the catalysts, the agitation increases reaction kinetics, thereby promoting chemical reactions used to efficiently convert gasses containing carbon monoxide and hydrogen into hydrocarbons.

Abstract: A catalyst includes 5-75% wt cobalt supported on an oxidic support consisting of aluminium and 0.01-20% wt lithium, and a process for preparing the catalyst. The catalysts are useful for the Fischer-Tropsch synthesis of hydrocarbons.

Abstract: This invention relates to a hydrocarbon synthesis process comprising the conversion of a feed of H2 and at least one carbon oxide to hydrocarbons containing at least 30% on a mass basis hydrocarbons with five or more carbon atoms. The conversion is carried out in the presence of an alkali-promoted iron hydrocarbon synthesis catalyst and an acidic catalyst suitable for converting hydrocarbons. The reaction mixture formed during the conversion contains less than 0.02 mol alkali per 100 g iron and the H2:carbon oxide molar ration in the feed of H2 and carbon oxide is at least 2.

Abstract: The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the feedstock is free of or substantially free of metal salts.

Abstract: A catalyst including cobalt, zinc oxide and aluminium is described, having a total cobalt content of 15-75% by weight (on reduced catalyst), an aluminium content ?10% by weight (based on ZnO) and which when reduced at 425° C., has a cobalt surface area as measured by hydrogen chemisorption at 150° C. of at least 20 m2/g cobalt. A method for preparing the catalyst is also described including combining a solution of cobalt, zinc and aluminium with an alkaline solution to effect co-precipitation of a cobalt-zinc-aluminium composition from the combined solutions, separating of the co-precipitated composition form the combined solutions, heating the composition to form an oxide composition, and optionally reducing at least a portion of the cobalt to cobalt metal. The catalysts may be used for hydrogenation reactions and for the Fischer-Tropsch synthesis of hydrocarbons.

Abstract: In a process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst comprising a metal and a support comprising silicon carbide, the support comprises more than 50% by weight of silicon carbide in the beta form. A process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst the effluent thus obtained are also disclosed.

Abstract: Catalyst compositions and methods for F-T synthesis which exhibit high CO conversion with minor levels (preferably less than 35% and more preferably less than 5%) or no measurable carbon dioxide generation. F-T active catalysts are prepared by reduction of certain oxygen deficient mixed metal oxides.

Abstract: There are disclosed catalyst formulations and methods for the preparation of oxygenated lower aliphatic compounds. The methods comprise applying a mixture of carbon monoxide and hydrogen to a catalyst formulation under reaction conditions, wherein the catalyst formulation is a solid which may comprise: an active metal, a mixed metal component comprising one or more of a metal A, a metal B, a metal C, and a promoter. In certain embodiments one or more of the metals and the promoter may be present as compounds. In a first embodiment the catalyst comprises a noble metal and an alkali metal promoter, mixed oxides of cerium, zirconium and molybdenum, and an alkali metal promoter. Carbon monoxide and hydrogen may be reacted in the presence of the catalysts disclosed to produce mixtures enriched in lower aliphatic alcohols and particularly ethanol. Various catalyst preparation methods are disclosed including autoignition and gel-sol methods.

Abstract: An object of the present invention is to provide a catalyst which, in the FT process, exhibits a high chain growth probability, and a high catalytic activity, can stably and smoothly promote the reaction, exhibits a high productivity of C5+, and can efficiently produce liquid hydrocarbons, and a process therefor. The invention relates to a hydrocarbon-producing catalyst obtainable by supporting a ruthenium compound on a support composed of a manganese oxide and an aluminum oxide, and which satisfies at least one of characteristics (1) and (2): (1) the catalyst being treated with an aqueous alkaline solution and subsequently subjected to calcination treatment in the air at 150 to 500° C., (2) the aluminum oxide being an aluminum oxide wherein pore volume formed by pores having a pore diameter of 8 nm or more accounts for 50% or more of total pore volume.

Abstract: A three-phase low temperature Fischer-Tropsch (LTFT) process wherein CO and H2 are converted to hydrocarbons and possibly oxygenates thereof by contacting the CO and H2 with an iron-based Fischer-Tropsch catalyst in a LTFT reactor in the presence of an acid which is introduced into the LTFT reactor.

Abstract: This invention is directed to a process for making a methanol product from a synthesis gas (syngas) feed using a fast fluid bed reactor. The reactor is operated at substantially plug flow type behavior. The heat from circulated catalyst is sufficient to initiate the reaction process with little to no preheating of feed required. In addition, little if any internal reactor cooling is needed.

Abstract: The present invention relates to thermally stable, high surface area alumina supports and a method of preparing such supports with at least one modifying agent. The method includes adding an aluminum modifying agent to the alumina prior to calcining. The inventive support has thermal stability at temperatures above 800° C. A more specific embodiment of the invention is a catalyst having a high surface area, thermally stable alumina support with at least one group VIII metal or rhenium and an optional promoter loaded onto the support. The present invention further relates to gas-to-liquids conversion processes, more specifically for producing C5+ hydrocarbons.