文献类型：期刊文献

中文题名：稀土对甲醇车尾气净化银催化剂性能影响的研究

英文题名：Effects of Rare Earth on Methanol Fuel Exhaust Deep Oxidation over Ag Catalyst

作者：王幸宜[1];万颖[1];卢冠忠[1]

机构：[1]华东理工大学工业催化研究所,上海200237

年份：2000

卷号：21

期号：9

起止页码：1470

中文期刊名：高等学校化学学报

外文期刊名：Chemical Journal of Chinese Universities

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：上海市高等学校青年教师学术基金!(批准号 :96JG0 50 51)资助

语种：中文

中文关键词：负载银催化剂;甲醇氧化;镧;铈;汽车;尾气净化

外文关键词：Supported Ag catalyst; Methanol oxidation; Lanthanum; Cerium

摘要：The performance of deep oxidation of methanol on supported Ag catalysts was examined by a chromatograph-micro-reactor. The research results showed that La and/or Ce added into γ-alumina support affected greatly the activity and selectivity of methanol oxidation on Ag catalyst. La could lower light-off temperature of methanol oxidation and decreased the content of intermediate containing oxygen, but at low temperature HCOOCH3 formed. Ce had an unfavorable role. The addition of La and Ce into catalyst could cause the effects of these elements to offset. By XPS technique, it was showed that La and Ce could change the chemical valence of Ag inversely, which corresponded to the modifications of catalytic performance.
The performance of deep oxidation of methanol on supported Ag catalysts was examined by a chromatograph-micro-reactor. The research results showed that La and/or Ce added into γ-alumina support affected greatly the activity and selectivity of methanol oxidation on Ag catalyst. La could lower light-off temperature of methanol oxidation and decreased the content of intermediate containing oxygen, but at low temperature HCOOCH_3 formed. Ce had an unfavorable role. The addition of La and Ce into catalyst could cause the effects of these elements to offset. By XPS technique, it was showed that La and Ce could change the chemical valence of Ag inversely, which corresponded to the modifications of catalytic performance.