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论文类型：期刊论文

发表时间：2002-01-01

发表刊物：Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities

收录刊物：Scopus、PKU、ISTIC

卷号：23

期号：4

页面范围：631-

ISSN号：02510790

摘要：Ag-ZSM-5 catalysts were investigated for the selectively catalytic reduction of NO by methane in the excess of oxygen. The adsorption properties of NOx and the reaction of absorbed NOx with CH4 were studied through TPD and TPSR measurements. NOx was effectively and selectively reduced by CH4 over Ag-ZSM-5 catalysts. The co-adsorption of NO and O2 over Ag-ZSM-5 catalyst led to the formation of adsorbed NO3 species, which could be effectively reduced by CH4. Even in the presence of O2, NO3 species were more reactive than O2. The priority of CH4 reaction with surface NO3-species to form N2 was clearly observed.