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Hydrogen Spillover as a Countermeasure for Deactivation of Solid Acid Catalyst

E. Kikuchi

出版	1990
URL	http://books.google.com.hk/books?id=Ut2xAQAACAAJ&hl=&source=gbs_api

註釋

Coke formation is an evitable side reaction in most petroleum conversion on solid acid catalysts, resulting in catalyst deactivation. The addition of a Pd/A12)3 catalyst to a solid acid catalyst and the use of hydrogen carrier gas has been shown as an efective countermeasure for this kind of catalyst deactivation. Stabilization of the catalytic activity brought about by these procedures in considered as a result to hydrogen spillover, which is a well-known phenomenon in heterogeneous catalysis. It is proved in the present study that spillover hydrogen can effectively prevent the deactivation when the active sites for hydrocarbon conversion are of Lewis type acidity. [Authors' abstract].