2012•Huagong jinzhanRequires access

Research advances in selective catalytic reduction of NO_x over transition metal-based zeolite catalysts

Yao Shi

Abstract

A general review is given over the research advances in SCR of NOx with ammonia or hydrocarbons over transition metal-based zeolite catalysts in last 10 years.In NH3-SCR system,Cu and Fe based zeolite catalysts are particularly addressed,the deactivation reasons of these catalysts is discussed as well.In HC-SCR system,the effects of different metals,zeolite types,reducing agents,water vapor,sulfur dioxide on the activity of catalysts are summarized,and the well accepted reaction mechanism of HC-SCR is introduced.The future research directions for SCR over zeolite-based catalyst are also included.

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Key concepts: Zeolite, Catalysis, Selective catalytic reduction, NOx, Transition metal, Ammonia, Chemistry, Inorganic chemistry