摘要
应用XPS、DTG、DTA和XRD技术,分析了La提高催化剂Co-La/-γA l2O3活性的原因.加入La后,XPS分析得出,Co2p在催化剂表层含量是未加前的1.65倍;DTG和DTA表征显示,La对催化剂的热效应影响很小;XRD分析表明,La的加入提高了Co3O4的分散度.
The reasons of Co-La/γ-Al2O3 activity improved by La were investigated using XPS,TG, DTA and XRD techniques. With the addition of La XPS characterization indicated the Co2p content on the catalysts surface was 1. 65 times than before. The DTG and TDA result showed that the weight loss temperature and thermostability were changed little. The XRD result indicated that the catalysts dispersity was improved.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2005年第6期444-447,共4页
Journal of Molecular Catalysis(China)
基金
国家自然科学基金(20266001)
广西高校百名中青年学科带头人资助项目([2002]467)
关键词
钴
镧
肉桂醛
肉桂醇
选择性加氢催化剂
Co
La
Cinnamaldehyde
Cinnamyl alcohol
Selective hydrogenation catalysts
作者简介
黄朋勉，男，1972年生，博士研究生．
通讯联系人：刘自力．E-mail：liuzili@gxu．edu．cn．
