Methane conversion by various metal, metal oxide and metal carbide catalysts

被引:9
作者
Naito, S [1 ]
机构
[1] Kanagawa Univ, Fac Engn, Dept Appl Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan
关键词
methane; conversion; metal; metal oxide; metal carbide;
D O I
10.1023/A:1019084020968
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 progress in the field of methane conversion into higher hydrocarbons including aromatics and oxygenated compounds in the recent five years will be reviewed shortly, together with a new type of the methane conversion reaction with carbon monoxide at lower temperatures (600-700 K) by supported group VIII metal catalysts. Benzene was formed selectively among hydrocarbons in the CH4-CO reaction over silica-supported Rh, Ru, Pd and Os catalysts under atmospheric pressure. Both CH4 and CO were required for benzene formation, and only ethane and ethylene were formed besides benzene. The amount of C-3-C-5 hydrocarbons was negligible, which suggests that a completely different mechanism from the CO-H-2 reaction may be operating over these catalysts despite of the similarity in the reaction conditions with the CO-H-2 reaction. The mechanism of benzene formation was studied deeply by means of kinetical investigation as well as infrared spectroscopy and isotopic tracer method in connection with that of CO hydrogenation.
引用
收藏
页码:3 / 15
页数:13
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