The present invention pertains to novel core-shell particles comprising a core of iron oxide and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm. This invention is also directed to their uses in the manufacture of a catalyst, and to the method for preparing these particles, by precipitating cobalt oxide onto magnetite or hematite particles which are themselves precipitated from Fe(III) and optionally Fe(II) salts.

A method of preparing a modified catalyst support comprises contacting a catalyst support material with a modifying component precursor in an impregnating liquid medium. The impregnating liquid medium comprises a mixture of water and an organic liquid solvent for the modifying component precursor. The mixture contains less than 17% by volume water based on the total volume of the impregnating liquid medium. The modifying component precursor comprises a compound of a modifying component selected from the group consisting of Si, Zr, Co, Ti, Cu, Zn, Mn, Ba, Ni, Al, Fe, V, Hf, Th, Ce, Ta, W, La and mixtures of two or more thereof. A modifying component containing catalyst support material is thus obtained. Optionally, the modifying component containing catalyst support material is calcined at a temperature above 100 C. to obtain a modified catalyst support.

This invention relates to a method of preparing an iron carbide/carbon nanocomposite catalyst containing potassium for high temperature Fischer-Tropsch (FT) synthesis reaction and the iron carbide/carbon nanocomposite catalyst prepared thereby, and a method of manufacturing a liquid hydrocarbon using the same and a liquid hydrocarbon manufactured thereby, wherein a porous carbon support is uniformly impregnated with an iron hydrate using melt infiltration, and potassium is also supported together via various addition processes, including a pre-addition process of a potassium salt which is ground upon impregnation with the iron hydrate, or a mid- or post-addition process of a potassium solution using incipient wetness impregnation after impregnation with the iron hydrate. Accordingly, the highly active iron carbide/potassium/carbon composite catalyst for high temperature FT reaction in which 530 wt % of active iron carbide particles are supported on the porous carbon support can be obtained and is structurally stable to heat even in high temperature FT reaction of 300 C. or more, and liquid hydrocarbons can be selectively obtained at high yields.

It is provided a system and process for producing a recycled cracked naphtha product slate comprising gasifying in a gasifier waste material to obtain a crude syngas, the waste material comprising carbon and hydrogen in a molar ratio H:C; cleaning the crude syngas in a cleaning unit to obtain a clean syngas comprising H.sub.2 and CO in a molar ratio H.sub.2:CO of between 0.5:1 and 5:1; and reacting the clean syngas in a reactor in the presence of a catalyst comprising a mixture of transition metal oxides to obtain the recycled cracked naphtha product slate, wherein the molar ratio H:C is less than 2.5.

The present disclosure relates generally to reverse water-gas shift processes, integrated Fischer-Tropsch processes, and supported reverse water-gas shift catalysts for conducting these processes. The catalysts described herein include a support that is a cerium oxide support, a titanium oxide support, an aluminum oxide support, a zirconium oxide support, or a mixed oxide support comprising a mixture of two or more of cerium oxide, titanium oxide, aluminum oxide, and zirconium oxide; and manganese, present in an amount in the range of 0.5 to 20 wt % of the catalyst, based on the total weight of the catalyst.

The present disclosure relates generally to processes for performing an integrated Fischer-Tropsch synthesis of hydro-carbons using methanol. In particular, the disclosure relates to a process comprising: providing a first feed stream comprising H.sub.2 and CO.sub.2; contacting the first feed stream with a hydrogenation catalyst for form a first product stream comprising methanol; providing a second feed stream comprising at least a portion of the methanol of the first product stream; contacting the second feed stream with a methanol decomposition catalyst to form a second product stream comprising CO and H.sub.2; providing a third feed stream comprising H.sub.2 and at least a portion of the CO of the second product stream; contacting the third feed stream with an iron-containing Fischer-Tropsch catalyst to provide a third product stream comprising C.sub.5+ hydrocarbons and CO.sub.2.

The present disclosure relates generally to processes for performing an integrated Fischer-Tropsch synthesis of hydrocarbons using methanol. In particular, the disclosure relates to a process comprising: providing a first feed stream comprising methanol; contacting the first feed stream with a methanol decomposition catalyst to form a first product stream comprising CO and H.sub.2; providing a second feed stream comprising H.sub.2 and at least a portion of the CO of the first product stream; contacting the second feed stream with a Fischer-Tropsch catalyst to provide a second product stream comprising C.sub.5+ hydrocarbons.

The present invention relates to catalytically active material, comprising grains of non-graphitizing carbon with nickel nanoparticles dispersed therein, wherein dp, the average diameter of nickel nanoparticles in the non-graphitizing carbon grains, is in the range of 1 nm to 20 nm, D, the average distance between nickel nanoparticles in the non-graphitizing carbon grains, is in the range of 2 nm to 150 nm, and , the combined total mass fraction of metal in the non-graphitizing carbon grains, is in the range of 30 wt % to 70 wt % of the total mass of the non-graphitizing carbon grains, and wherein dp, D and conform to the following relation: 4.5 dp/>D0.25 dp/. The present invention, further, relates to a process for the manufacture of material according to the invention, as well as its use as a catalyst.

A catalyst having a core comprising a composite (A) of SiC grains and a protective matrix of one or more metal oxides, such as alumina, in voids between the SiC grains, said core having a density >60% of theoretical density, and a catalytically active layer (C) containing, e.g., Ni adhered to the core. A catalyst support comprising a composite of SiC grains and a protective matrix of one or more metal oxides in voids between the SiC grains is also provided, along with a method of fabricating a catalyst core. The catalyst can be used in Fischer-TRopsch synthesis or in steam methane reforming.

CO.sub.2 introduced into the ground reacts with water in the moisture present in the surroundings to convert to hydrocarbon, suppressing leakage of CO.sub.2 above ground. The method for producing hydrocarbon has an introduction step for introducing CO.sub.2 into a storage site in the ground where moisture and a catalytic metal are present, the pressure is 5 MPa or higher, and the temperature is 40 C. or higher, to bring the CO.sub.2 into a subcritical state or a supercritical state, and a synthesis step for reacting the water in the moisture with the subcritical or supercritical CO.sub.2 in the storage site to synthesize hydrocarbon. The storage site is preferably a site from 800 m to 1200 m below ground. The pressure of the storage site is preferably 8 MPa or higher.