METHOD AND CATALYST FOR OXIDATION OF HS CONTAINING IN GAS AT SMALL CONCENTRATION TO SULFUR BY CATALYTIC METHOD Russian patent published in 1999 - IPC

FIELD: chemical technology. SUBSTANCE: invention relates to a method of direct oxidation of H₂S containing in gas at small concentration to sulfur by CATALYTIC method. Gas containing H₂S is treated with gas containing free oxygen at contact with catalyst of selective oxidation of H₂S to sulfur. Gas has free oxygen at amount providing the preparing molar ratio O₂ : H₂S from 0.05 to 10. The catalyst consists of the catalytically active phase bound with a carrier. An active phase has metal as metal compound and/or elemental state and a carrier consists of silicon carbide and its content is at least 40 weight % of the catalyst weight. Invention ensures to desulfurize gas at the improved selectivity by sulfur. EFFECT: improved method of oxidation, enhanced effectiveness of catalyst. 20 cl, 6 ex