化工学报2011，Vol.62Issue(7)：1885-1891,7.DOI:10.3969/j.issn.0438-1157.2011.07.015
结构型LaMnO3钙钛矿催化剂的催化燃烧活性和热稳定性
Activity and thermal stability of LaMnO3 monolithic catalysts for catalytic combustion of toluene
摘要
Abstract
To reduce the effect of cordierite carrier on the activity and thermal stability of perovskites,LaMnO3 monolithic catalysts with La2O3 and SiO2 coating were prepared by in-situ deposition and slurry impregnation. The activity and thermal stability of the catalysts were investigated in catalytic combustion of toluene. It was shown that La and Mn oxides could be deposited uniformly and firmly on the surface of cordierite, but the active phases of LaMnO3 perovskites could not be formed by in-situ deposition.However the progress of slurry impregnation could maintain the structure and activity of LaMnO3 catalyst. The monolithic LaMnO3 showed the same catalytic performance as the pure LaMnO3 powder catalyst. La2O3 coating was more effective than SiO2 coating to keep high thermal stability and activity of LaMnO3 on the surface of cordierite.关键词
LaMnO3/钙钛矿/结构型催化剂/催化燃烧/甲苯Key words
LaMnO3 / perovskites/ monolithic catalysts/ catalytic combustion/ toluene分类
化学化工引用本文复制引用
周瑛,卢晗锋,刘灿,陈银飞..结构型LaMnO3钙钛矿催化剂的催化燃烧活性和热稳定性[J].化工学报,2011,62(7):1885-1891,7.基金项目
浙江省科技厅重大专项(2007C13042) （2007C13042）
浙江省自然科学基金项目(Y5090202). （Y5090202）
