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

页码：103 / 108

页数：6

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