Influence of V2O5 Addition on Reduction of NO by C3H6 over Pt/V2O5/Al2O3 Monolithic Catalyst

作     者：Kang Shoufang 

作者机构：Res. Ctr. for Eco-Environ. Sci. Chinese Acad. of Sci. Beijing 100085 China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2004年第22卷第Z1期

页      面：175-177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：Project supported by Key Project of Knowledge Innovation of Chinese Academy of Sciences ( KZCX3-SW-430   Project of China Natural Science Foundation (50278094) 

主　　题：Diesel exhaust treatment NOx reduction SO2 oxidation V2O5 addition 

摘      要：Pt/V2O5/Al2O3 monolithic catalysts were prepared by wet impregnation method, and the influence of V2O5 addition on the catalytic activity for NO reduction by C3H6 under lean burn condition was investigated in detail. The results show that Pt/V2O5/Al2O3 has better activity of NO reduction than Pt/Al2O3, adding V2O5 to Pt catalyst makes the temperature window of NO reduction shift further to a lower temperature region. The activity of NO reduction decreases and there is a similar degree of deactivation over the two catalysts in the presence of SO2 in feed gas. Moreover, adding V2O5 to Pt catalyst resulted in improvement of resistance to SO2 oxidation, which decreases the emission of sulfate paniculate. Thermal aging treatment counteractes the promoting effect of V2O5 on NO reduction.