Temperature hysteresis phenomena in heterogeneous catalysis

被引：0
|
作者：
A. N. Subbotin
B. S. Gudkov
V. I. Yakerson
机构：
[1] Russian Academy of Sciences,N. D. Zelinsky Institute of Organic Chemistry
来源：
Russian Chemical Bulletin | 2000年 / 49卷
关键词：
heterogeneous catalysis; temperature hysteresis; oxidation; hydrogenation; methanation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Temperature hysteresis is observed only in exothermic heterogeneous catalytic reactions (viz., oxidation and methanation of CO or propene hydrogenation) and is absent in the case of endothermic reactions (dehydrogenation of isobutane) or reactions with heat close to zero (viz., 2-butene isomerization). Temperature hysteresis in hydrogenation reactions was discovered for the first time. The concept of local overheating of catalyst active sites caused by poor removal of the reaction heat is proposed to provide a noncontradictory interpretation of the appearance of hysteresis loops.
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页码：1373 / 1379
页数：6
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