FIELD: chemistry.
SUBSTANCE: invention relates to a catalyst composition which is suitable for catalytic reduction of sulfur compounds in a gas stream. Catalyst composition contains formed agglomerate of jointly mixed mixture containing pseudo boehmite, cobalt compound and molybdenum compound, wherein said formed agglomerate is burnt to obtain said catalyst composition containing gamma-aluminum oxide, from 7.75 to 15 wt % of molybdenum and from 2.85 to 6 wt % of cobalt, where each wt % is calculated from total weight of said catalyst composition and metal as oxide regardless of actual shape thereof. Said catalyst composition has a bimodal pore structure, so that less than 6 % of total pore volume of said catalyst composition falls within pores with diameter greater than 10000 Å, and where said bimodal pore structure of said catalyst composition is further characterized by that more than 15 % and less than 60 % of total pore volume of said catalyst composition falls within pores with diameter in range of 50 to 150 Å, more than 10 % and less than 50 % of total volume of pores of said catalyst composition falls on pores with diameter in range of 1000 to 10000 Å, and less than 15 % of total volume of pores of said composition of catalyst falls on pores with diameter ranging from 150 to 1000 Å. Also disclosed are a hydrolysis method for catalytic reduction of sulfur compounds in a gas stream and a method of producing said catalyst composition.
EFFECT: invention enables to obtain a catalyst composition which enables conversion with high conversion of sulfur compounds contained in gas streams, namely, in tail gas of Claus process plant, under conditions of low-temperature reaction.
11 cl, 6 tbl, 2 ex, 2 dwg
