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A DRIFTS STUDY OF THE SURFACE AND BULK REACTIONS OF HYDROGEN-SULFIDE WITH HIGH-SURFACE-AREA ZINC-OXIDE
被引:19
|作者:
DAVIDSON, JM
SOHAIL, K
机构:
[1] Department of Chemical Engineering, University of Edinburgh, Edinburgh EH9 3JL, King’s Buildings, Mayfield Road
关键词:
D O I:
10.1021/ie00038a001
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
Diffuse reflectance FTIR has been used to elucidate the mechanism of the reaction of H2S with high surface area ZnO prepared from hydrozincite and, hence, containing some residual CO2. Hydrogen sulfide is converted into ZnS by successive proton transfers to chemisorbed hydroxyls on the Zn- and O-polar hexagonal faces: Much product molecular water remains adsorbed on the prism faces or combined with residual carbonate as hydrozincite. Counterdiffusion of Zn2+ and H+ is proposed as the transport mechanism in the reaction of bulk solid ZnO.
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页码:3675 / 3677
页数:3
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