The thermal decomposition of hydrogen sulfide over transition metal sulfides

On reaction kinetics for the thermal decomposition of hydrogen sulfide

“…Several of the studies involving catalytic processes for splitting hydrogen sulfide into hydrogen Ž were granted patents during the 1980s Chivers et al, 1980;. Berk et al, 1991 . Since our interest is mainly in the homogeneous gas-phase thermal reactions occurring in the front-end of Claus plants, these studies will not been discussed here.…”

Production of elemental sulfur from spent sorbent and CO{sub 2}. Final report, April 1, 1992--October 31, 1994

“…Chivers et al (1980) found that MoS, was the most effective catalyst above 6OO0C, but WS, and Cr,S, gave higher H2 yields than'MoS, below 600°C. They also found FeS, COS, NiS, CuS, C,S and CQS, were not effective catalysts for the decomposition of H2S and only a trace amount of elemental sulfur was produced in the reaction.…”

Sustainable hydrogen production options and the role of IAHE

“…The reaction enthalpy in standard conditions is 20.5 kJ/mol. The reaction temperature is in the range of 400e800 C and is conducted catalytically using various catalysts among which Cr 2 S 3 and WS 2 and Mo-based compounds give significant yields with around 25% conversion and separation of hydrogen gas product from the hydrogen sulphide reactant it is necessary [45,46]. Pressure swing absorption and selective hydrogen membrane separation techniques were proposed to extract hydrogen out of the gaseous product mixture [45,47].…”