Fischer-Tropsch synthesis with supported cobalt catalyst. Promoting effects of lanthanum oxide for cobalt/silica catalyst

被引:30
|
作者
Adachi, M [1 ]
Yoshii, K [1 ]
Han, YZ [1 ]
Fujimoto, K [1 ]
机构
[1] UNIV TOKYO, GRAD SCH ENGN, DEPT APPL CHEM, BUNKYO KU, TOKYO 113, JAPAN
关键词
D O I
10.1246/bcsj.69.1509
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The promotional effects of metal oxides for a silica-supported cobalt catalyst were investigated by using X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Temperature Programmed Reaction (TPR), and Fourier Transform-Infrared Spectroscopy (FT-IR) techniques. The La-modified cobalt catalyst with 3% La loading which was prepared by simultaneous impregnation showed higher catalytic activity while keeping slightly higher selectivity of C-2+ hydrocarbons. TPR, FT-IR, and TEM studies revealed that CO is adsorbed on the La-modified cobalt catalyst in a more active state compared to the monometallic cobalt catalyst, which was caused by the agglomeration of cobalt.
引用
收藏
页码:1509 / 1516
页数:8
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