Abstract: LS-06 catalyst for selective oxidation of hydrogen sulfide with good hydrogen sulfide conversion rate and sulfur recovery yield was developed by optimizing the active component, the preparation process，and the carrier. The catalyst was manufactured in industrial scale and applied in a commercial unit. The commercial calibration indicated that the conversion rate of hydrogen sulfide is more than 98.08%, the sulfur recovery rate 91.04% under the conditions of H2S concentration of 0.5% in inlet of super-Claus process. The sulfur dioxide concentration of purified flue gas is below 500 mg/m3, less than 550 mg/m3 of the design requirement, lower than the 960 mg/m3 emissions standards of the national environmental protection regulations.

Key words: H2S, selective oxidation, catalyst, industrial application