物理化学学报Issue(8)：1550-1558,9.DOI:10.3866/PKU.WHXB201406031
BaFeO3-x与Cu-ZSM-5耦合催化剂的NOx储存还原性能
NOx Storage Reduction Performance of Coupled BaFeO3-x+Cu-ZSM-5 Catalyst
摘要
Abstract
A BaFeO3-x+Cu-ZSM-5 coupled catalyst was designed and synthesized to eliminate the NOx emitted from lean-burn exhausts, providing an alternative to the traditional noble-metal-based NOx storage reduction (NSR) catalysts. During the lean-burn period, the NO oxidation and storage processes mainly occurred over the BaFeO3-x catalyst. During the fuel-rich period, the released NOx from the BaFeO3-x catalyst was further reduced over the Cu-ZSM-5 catalyst. Our results show that, compared with the BaFeO3-x and Cu-ZSM-5 catalyst alone, the operating temperature window of the coupled BaFeO3-x+Cu-ZSM-5 catalyst is extended from 250 to 400 °C, and its NOx elimination performance is significantly improved. The maximum NOx conversion of the coupled catalyst was 98%, while the N2 selectivity was close to 100%.关键词
稀燃/耦合催化剂/氮氧化物/储存/还原Key words
Lean-burn/Coupled catalyst/NOx/Storage/Reduction分类
化学化工引用本文复制引用
吕姣龙,李锋丽,李新刚..BaFeO3-x与Cu-ZSM-5耦合催化剂的NOx储存还原性能[J].物理化学学报,2014,(8):1550-1558,9.基金项目
The project was supported by the National Natural Science Foundation of China (U1162103, U1232118), Program for New Century Excellent Talents in University of China (NCET-10-0615), Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China (2011-1568).国家自然科学基金(U1162103, U1232118),教育部新世纪优秀人才支持计划(NCET-10-0615)及教育部留学归国人员科研启动基金(2011-1568)资助项目 （U1162103, U1232118）
