Activity Enhancement of Pt/Ba/Al_(2)O_(3) Mixed with Mn/Ba/Al_(2)O_(3) for NO_(x) Storage-reduction by Hydrogen

作     者：Jian Hua XIAO Xue Hui LI Sha DENG Fu Rong WANG Le Fu WANG 

作者机构：School of Chemical and Energy Engineering South China University of Technology Guangzhou 510640 

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

年 卷 期：2006年第17卷第10期

页      面：1357-1360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] 

基　　金：The National Natural Science Foundation of China (No. 20476032) Natural Science Foundation of Guangdong Province (No. 030951) are gratefully acknowledged for financial support for this project 

主　　题：Nitrogen oxides storage-reduction lean burn Pt/Ba/Al2O3 Mn/Ba/Al2O3 

摘      要：Abstract： Mn/Ba/Al2O3 catalyst for NO oxidation-storage and Pt/Ba/Al2O3 catalyst mixed with Mn/Ba/Al2O3 for NOx storage-reduction by hydrogen were investigated. The results showed that Mn/Ba/Al2O3 had large nitrogen oxides storage capacity （397.9 μmolg^-1） under lean burn condition. When Pt/Ba/Al2O3 catalyst was mixed with Mn/Ba/Al2O3 in equal weight proportion, the NOx conversion increased between 250 ℃ and 500 ℃ under the dynamic lean-rich burn conditions, and the maximum NOx conversion increased from 95.4% to 98.2%. Mn/Ba/Al2O3 has promoted NOx storing in the lean stage and improved NOx reduction efficiency in the rich stage, these might result in higher NOx conversion over the low Pt loading content catalyst.