Thermal decomposition and cobalt species transformation of carbon nanotubes supported cobalt catalyst for Fischer-Tropsch synthesis

被引：0
|
作者：
Jing L
机构：
来源：
Journal of Natural Gas Chemistry | 2012年 / 21卷 / 01期
基金：
中国国家自然科学基金;
关键词：
carbon nanotubes; cobalt species; Fischer-Tropsch synthesis; thermal decomposition;
D O I：
暂无
中图分类号：
O643.32 [催化反应];
学科分类号：
081705 ;
摘要：
The effect of calcination condition on the cobalt species and Fischer-Tropsch synthesis (FTS) was studied. It was found that higher calcination temperature resulted in decreased FTS activities because CNTs were consumed by oxidation in air at temperature higher than 230°C. Cobalt species went through transformation from Co3O4 to metallic Co in Ar by autoreduction at temperature over 500°C. The autoreduction route might be Co3O4→CoO→Co or Co3O4→Co2C→Co. Reduction at temperature higher than 500°C also resulted in decreased FTS activities due to the methanation of CNTs in hydrogen.
引用
收藏
页码：37 / 42
页数：6
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