Ag-ZSM-5 Catalyst for the Catalytic Decomposition of NO

作     者：Jia Wei TENG Tian Xi CAI Xin He BAO(School of Chemical Engineering, Dalian University of Technology, Dalian 116012)(State key Laboratory of Catalysis, Dalian Institute of Chemical Physics. Dalian 116023) 

作者机构：School of Chemical Engineering Dalian University of Technology Dalian 116012 China State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Dalian 116023 China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：1999年第10卷第1期

页      面：83-86页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Ag-ZSM-5 catalyst NO decomposition 

摘      要：The catalytic decomposition of NO over Ag-ZSM-5 catalyst prepared by ion-exchange was investigated. The exchanged silver in the zeolite was reduced and it collected in the course of the reaction to form silver particles of about 20 nm. The catalytic reaction induced a pronounced restructuring of the Ag particles through preferential formation of the (111) facets. These facets were shown to hind a tightly bound oxygen species (O-gamma). The O-gamma species occupies the active sites for NO adsorption resulting in catalyst deactivation. It could be removed by appropriate reducing agents, such as CO, to recover the active sites at elevated temperatures.