Catalytic performance of silica-supported chromium oxide catalysts in ethane dehydrogenation with carbon dioxide

被引：53
|
作者：
Ge, X [1 ]
Zhu, MM [1 ]
Shen, JY [1 ]
机构：
[1] Nanjing Univ, Dept Chem, Lab Mesoscop Mat Sci, Nanjing 210093, Peoples R China
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2002年 / 77卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ethane dehydrogenation; ethylene; carbon dioxide; silica-supported chromium oxide catalyst;
D O I：
10.1023/A:1020348021042
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The oxidative dehydrogenation of ethane into ethylene by CO2 over a series of silica-supported chromium oxide catalysts was investigated. The results showed that the catalysts were effective for the reaction and CO2 in the feed promoted the catalytic activity. The 5%Cf/SiO2 catalyst exhibited the excellent performance with 30.7% ethane conversion and 96.5% ethylene selectivity at 700degreesC. ESR and UV-DRS were used to probe the active sites and the species with high valent states (Cr5+ and/or Cr6+) were found to be important for the reaction.
引用
收藏
页码：103 / 108
页数：6
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