CATALYST, METHOD OF PREPARING SAID CATALYST AND METHOD OF REMOVING SULPHUR DIOXIDE FROM GAS EMISSIONS Russian patent published in 2009 - IPC B01J27/49 B01J23/72 B01J21/04 B01J23/10 B01J37/02 B01J37/20 B01D53/50 B01D53/86 C01B17/04 

FIELD: chemistry.

SUBSTANCE: catalyst is described for removing sulphur dioxide from gas emissions, with reduction of sulphur dioxide to elementary sulphur using a mixture of carbon monoxide and hydrogen. The catalyst contains transition metals and a carrier. The transition metal compound in the catalyst is Cu_1-xM_xCr₂S_4+δ sulphide or a mixture of separate sulphides CuS, Cr₂S₃ and MS_1+δ in amount of 2-20 wt %, where: M - is a transition metal, chosen from a group: Fe, Co, Ni, values of x and δ vary from 0 to 0.5; the carrier is aluminium oxide, including aluminium oxide modified with cerium oxide additive, in the following ratio of components, wt %: Cr - 12, Cu 0.1-5.0; transition metal 0.01-2.50, cerium 1-15, aluminium oxide - the rest. A method is described for preparing this catalyst and its use in cleaning gas emissions.

EFFECT: high efficiency and sulphur selectivity.

46 cl, 33 ex, 3 tbl