Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
An Investigation of the Gas-Solid Interface Reaction
Masayuki KatsumotoKazuo FuekiTakashi Mukaibo
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1973 Volume 46 Issue 12 Pages 3641-3644


The isotopic exchange between H2S and D2 on molybdenum disulfide and manganese sulfide has been studied kinetically between 420° and 500 °C. The reaction proceeded via these steps:
& H_2S+D_2=D_2S+H_2
& H_2+D_2=2HD
From the analysis of the kinetic data, the rate constant of the sulfurization of both metal sulfides by “hydrogen sulfide,” ki, and that of their reduction by “hydrogen,” ki′, were calculated. The dependence of these rate constants on the sulfur activity was determined. A possible mechanism of the reaction at the surface of the sulfides is discussed in this paper.

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