Disclosed herein is a method of producing a product comprising C2-C5 hydrocarbons and C6-C18 hydrocarbons comprising the steps of: a) converting synthesis gas to the product comprising C2-C5 hydrocarbons and C6-C18 hydrocarbons in a first reactor; b) removing the product comprising C2-C5 hydrocarbons and C6-C18 hydrocarbons from the first reactor; c) reintroducing the C6-C18 hydrocarbons into the first reactor and/or introducing the C6-C18 hydrocarbons into a cooling jacket of the first reactor; and d) performing an exothermic reaction in the first reactor, thereby transferring heat from the exothermic reaction to the C6-C18 hydrocarbons, thereby storing heat in the C6-C18 hydrocarbons.

The present disclosure relates to the field of Fischer-Tropsch synthesis reaction catalysts, and discloses a pure phase / iron carbide catalyst for Fischer-Tropsch synthesis reaction, a preparation method thereof and a Fischer-Tropsch synthesis process, wherein the method comprises the following steps: (1) subjecting the nanometer iron powder or a nano-powder iron compound capable of obtaining the nanometer iron powder through in-situ reduction and H.sub.2 to a surface purification treatment at the temperature of 250-510 C.; (2) pretreating the material obtained in the step (1) with H.sub.2 and CO at the temperature of 80-180 C., wherein the molar ratio of H.sub.2/CO is 1.2-2.8: 1; (3) carrying out carbide preparation with the material obtained in the step (2), H.sub.2 and CO at the temperature of 180-280 C., wherein the molar ratio of H.sub.2/CO is 1.0-3.0: 1. The preparation method has the advantages of simple and easily obtained raw materials, simple and convenient operation steps, being capable of preparing the 100% pure phase /40 iron carbide catalyst having lower selectivity of CO.sub.2 and CH.sub.4 and higher selectivity of effective products.

The present disclosure relates to the technical field of Fischer-Tropsch synthesis reaction catalysts, and discloses a supported / iron carbide catalyst for Fischer-Tropsch synthesis reaction, preparation method thereof and Fischer-Tropsch synthesis process, wherein the method comprises the following steps: (1) dipping a catalyst carrier in a ferric salt aqueous solution, drying and roasting the dipped carrier to obtain a catalyst precursor; (2) subjecting the catalyst precursor and H.sub.2 to a precursor reduction at the temperature of 300-550 C.; (3) pretreating the material obtained in the step (2) with H.sub.2 and CO at the temperature of 90-185 C., wherein the molar ratio of H.sub.2/CO is 1.2-2.8:1; (4) preparing carbide with the material obtained in the step (3), H.sub.2 and CO at the temperature of 200-300 C., wherein the molar ratio of H.sub.2/CO is 1.0-3.2:1. The preparation method has the advantages of simple and easily obtained raw materials, simple and convenient operation steps, being capable of preparing the catalyst with 100% pure phase / iron carbide as the active phase, the catalyst has lower selectivity of CO.sub.2 and CH.sub.4 and higher selectivity of effective products.

A catalyst for the production of olefins from synthesis gas, methods of making, uses thereof are described. The catalyst can include a catalytic transition metal on a silica support that includes an iron metal or oxide thereof dispersed throughout a silica-alkaline earth metal oxide support or in the core of the silica alkaline earth metal oxide framework.

The present invention relates to a process for preparing a cobalt-containing Fischer-Tropsch synthesis catalyst with good physical properties and high cobalt loading. In one aspect, the present invention provides a process for preparing a supported cobalt-containing Fischer-Tropsch synthesis catalyst, said process comprising the steps of: (a) impregnating a support material with cobalt haydroxide nitrate, or a hydrate thereof, of formula (I) below to form an impregnated support material, [Co(OH).sub.x(NO.sub.3).sub.(2-x).yH.sub.2O] (I) where: 0<x<2 0y6 (b) drying and calcining the impregnated support material.

The present disclosure relates generally to compositions and processes for modifying Fischer-Tropsch product selectivity. In particular, the disclosure provides for a for converting a mixture of hydrogen and carbon monoxide gases to a product composition comprising alcohols and liquid hydrocarbons via Fischer-Tropsch synthesis in the presence of a supported cobalt-manganese Fischer-Tropsch synthesis catalyst, the process comprising: contacting the catalyst with a first gaseous feed comprising carbon monoxide and hydrogen for at least 12 hours to provide via Fischer-Tropsch synthesis a first product composition comprising C.sub.5+ hydrocarbons and alcohol; then contacting the catalyst with a first selectivity gaseous composition comprising at least 35 vol % H.sub.2 and a H.sub.2:CO molar ratio of at least 2; and then contacting the catalyst with a second gaseous feed comprising carbon monoxide and hydrogen to provide a second product composition comprising C.sub.5+ hydrocarbons, with a selectivity of no more than 5% for alcohols. Optionally, the catalyst selectivity to alcohols can be reversed by contacting the catalyst with a second selectivity gaseous composition comprising CO or a H.sub.2:CO molar ratio of at below 1.5.

A process for the conversion of a feed comprising a mixture of hydrogen and carbon monoxide to hydrocarbons, the hydrogen and carbon monoxide in the feed being present in a ratio of from 1:9 to 9:1 by volume, the process comprising the step of contacting the feed at elevated temperature and atmospheric or elevated pressure with a catalyst comprising titanium dioxide and co bait wherein the catalyst initially comprises from 30% to 95% metallic cobalt by weight of cobalt.

A cobalt carbide-based catalyst for direct production of olefin from synthesis gas, a preparation method therefor and application thereof are disclosed. The method for preparing the catalyst comprises the following steps: 1) mixing a cobalt source with water, or mixing a cobalt source, an electron promoter and water to obtain a first solution; and mixing a precipitant with water to obtain a second solution; 2) adding the first solution and the second solution to water, or water and a structure promoter for precipitation, crystallizing, separating, drying and calcination; and 3) reducing a solid obtained in Step 2) in a reducing atmosphere, and then carbonizing in a carbonizing atmosphere. The prepared catalyst has high activity and high selectivity to olefins for direct production of olefins via syngas conversion.

A catalyst is regenerated by an inventive process using a heat exchange fluid such as superheated steam to remove heat during the process relying on efficient heat transfer (e.g., enabled by the microchannel reactor construction) in comparison with prior art heat exchange relying on a phase change, e.g. between water and (partial or complete vaporization) steam, allows simplification of the protocols to enable transition at higher temperatures between steps which translates in reduced duration of the regeneration process and avoids potential water hammering risks.

A unique process and catalyst is described that operates efficiently for the direct production of a high cetane diesel type fuel or diesel type blending stock from stochiometric mixtures of hydrogen and carbon monoxide. This invention allows for, but is not limited to, the economical and efficient production high quality diesel type fuels from small or distributed fuel production plants that have an annual production capacity of less than 10,000 barrels of product per day, by eliminating traditional wax upgrading processes. This catalytic process is ideal for distributed diesel fuel production plants such as gas to liquids production and other applications that require optimized economics based on supporting distributed feedstock resources.