PRODUCTION OF HYDROCARBONS FROM SYNTHESIS GAS Russian patent published in 2007 - IPC B01J37/02 B01J21/04 B01J21/06 B01J23/02 C10G2/00 

FIELD: petrochemical process catalyst.

SUBSTANCE: invention, in particular, relates to precursors of catalysts used in production of hydrocarbons from synthesis gas. Preparation of catalyst precursor involves contacting crude catalyst carrier, which is partly soluble in aqueous acid solution and/or in neutral aqueous solution, with modifying component of general formula Me(OR)_x, wherein Me is selected from Si, Zr, Ti, Cu, Zn, Mn, Ba, Co, Ni, Na, K, Ca, Sn, Cr, Fe, Li, Ti, Mg, Sr, Ga, Sb, V, Hf, Th, Ce, Ge, U, Nb, Ta, and W; R represents alkyl or alkoxy group; and x is integer from 1 to 5. Therefore, modifying component is introduced into catalyst carrier or deposited onto surface thereof to form protected modified catalyst carrier, which is less soluble and more inert in aqueous acid solution and/or in neutral aqueous solution than crude carrier. Resulting catalyst carrier is then subjected to heat treatment at temperature lower than 100° C so that calcination of the carrier does not take place. Non-calcined protected modified catalyst carrier is mixed with aqueous solution of cobalt, which is active component of catalyst or its precursor, to form slurry. Which is exposed to subatmospheric pressure to facilitate impregnation of the catalyst carrier with cobalt or its precursor. Impregnated carrier is then dried at subatmospheric pressure and finally calcined.

EFFECT: enhanced selectivity and activity of catalyst in Fischer-Tropsch synthesis and eliminated need to perform calcination step after contact of crude Carrier with modifying component and drying.

16 cl, 5 dwg, 1 tbl, 6 ex