燃料化学学报2001，Vol.29Issue(2)：169-173,5.
载体硅铝比及助剂对Co/HZSM-5催化剂CH4/CO2
重整反应性能的影响
EFFECTS OF Si/Al RATIO OF SUPPORT ANDPROMOTER ON CH4/CO2 REFORMING OVER Co/HZSM-5 CATALYSTS
黄传敬 1莫流业 2郑小明 2费金华2
作者信息
- 1. 浙江大学西溪校区催化研究所,淮北煤炭师范学院化学系,
- 2. 浙江大学西溪校区催化研究所,
- 折叠
摘要
Abstract
Coke formation mechanism in CH4/CO2 reforming to syngas over Co/HZSM-5 catalysts was studied by TPO, TPD, continuous and pulse reaction techniques, and the effects of Si/Al ratio of HZSM-5 and promoters including Na2O, La2O3 and MgO on activity and coking behavior of the catalyst were investigated. The results show that CH4 decomposition is a main contributor to coke deposition, which is suppressed effectively through increasing Si/Al ratio of HZSM-5 and adding promoters. Suppression of coke deposition caused by the promoters is in the following order: Na2O＞La2O3＞MgO. Among the promoters, La2 O3 and MgO have hardly effect on the catalyst activity, while a drop is found in catalyst activity due to Na2O added. Combing the catalytic performance and the results of TPO and TPD study, it is proposed that surface acidity of the catalyst is an important factor affecting catalytic activity and resis tance to coke deposition.关键词
Co/HZSM-5催化剂/载体硅铝比/助剂/CH4/CO2重整制合成气分类
化学化工引用本文复制引用
黄传敬,莫流业,郑小明,费金华..载体硅铝比及助剂对Co/HZSM-5催化剂CH4/CO2
重整反应性能的影响[J].燃料化学学报,2001,29(2):169-173,5.
