PRODUCTION OF HYDROCARBONS Russian patent published in 2015 - IPC C10G2/00 C07C1/04 B01J23/75 B01J23/89 

FIELD: chemistry.

SUBSTANCE: invention relates to producing hydrocarbons and, optionally, oxygenates of hydrocarbons. The process includes contacting a synthesis gas comprising hydrogen, carbon monoxide and N-containing contaminants selected from the group consisting of HCN, NH₃, NO, R_xNH_3-x, where R is an organic group and x is 1, 2 or 3, with R being the same or different when x is 2 or 3, R¹-CN, where R¹ is an organic group, and heterocyclic compounds containing at least one nitrogen atom as a ring member of a heterocyclic ring of the heterocyclic compound, with the N-containing contaminants constituting, in total, at least 100 vppb but less than 1000000 vppb of the synthesis gas, at a temperature of at least 180°C and a pressure of at least 10 bar(a), with a particulate supported Fischer-Tropsch synthesis catalyst which comprises a catalyst support, Co in catalytically active form supported on the catalyst support, and a dopant selected from the group consisting of platinum (Pt), palladium (Pd), ruthenium (Ru), rhenium (Re) and a mixture of two or more thereof at a dopant level expressed by formula 1: , where w is expressed as g Ru/g Co; and w<0,019 g Ru/g Co; x is expressed as g Pd/g Co; y is expressed as g Pt/g Co; z is expressed as g Re/g Co; and z<0,005 g Re/g Co; and 0<a<1, to obtain hydrocarbons and, optionally, oxygenates of hydrocarbons, by means of Fischer-Tropsch synthesis reaction of the hydrogen with the carbon monoxide. The invention also relates to the use the said catalyst to produce hydrocarbons.

EFFECT: in process for producing hydrocarbons by means of the above method, high levels of nitrogen contaminants can be tolerated while maintaining good catalyst activity and low catalyst CH₄ selectivity.

11 cl, 11 tbl, 24 ex