A CATALYTIC COMPOSITION FOR OXIDATION-REDUCTION PROCESS FOR EFFECTING THE CATALYTIC OXIDATION OF HYDROGEN SULFIDE IN GAS STREAMS

摘要

There is provided a method for preparing a catalytic composition for effectingthe catalytic oxidation of hydrogen sulfide in gas streams. The methodcomprises the steps of: a) preparing a mixture of a water soluble ironcompound and a stabilizing agent in an aqueous system, at a pH of less thanor equal to 2; b) adding a mixture of two chelating agents I and II, whereinbothchelating agents are amine chelating agents to the mixture obtained; c) addingsufficient aqueous amine chelating agent II to the mixture obtained to adjustthe pH to 7 to 10; and d) heating the mixture obtained to obtain the desiredconcentration of chelated iron in the mixture.