THE CLAUS REACTION .4. IR SPECTROSCOPIC STUDY OF THE MECHANISM OF THE REACTION OF H2S AND SO2 WITH THE SURFACE OF AN SN-MO OXIDE CATALYST

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作者：
KASUMOV, FB
机构：
来源：
KINETICS AND CATALYSIS | 1991年 / 32卷 / 06期
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The IR spectroscopic data showed that the Claus reaction takes place according to a new mechanism which includes the reaction of SO2 absorbed in a reversible molecular form with MoS2 formed as a result of dissociative adsorption of H2S with the participation of a surface polymolybdenum compound. According to this mechanism, the elementary event of the reaction takes place in cycles of reduction (formation of MoS2)-oxidation (formation of S(x)) of the active sites in the surface polymolybdenum compound. The presence of oxygen in the reaction mixture does nto deactivate the catalyst, since the sulfates formed are primarily surface compounds and are easily back-titrated by H2S.
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页码：1278 / 1282
页数：5
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