PARTIAL OXIDATION OF METHANE TO SYNTHESIS GAS-USING LA-M-O CATALYSTS

被引:117
作者
SLAGTERN, A [1 ]
OLSBYE, U [1 ]
机构
[1] SINTEF SI,POB 124,N-0314 OSLO,NORWAY
关键词
CARBON MONOXIDE; LANTHANUM; METHANE PARTIAL OXIDATION; SYNGAS;
D O I
10.1016/0926-860X(94)80109-6
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
Catalytic partial oxidation of methane to synthesis gas was performed over La-M-O, with M = Co, Cr, Ni, Rh. The best system, La-Rh-0, gave 95% conversion with 98% selectivity to carbon monoxide even after 120 h on stream at 800-degrees-C. La-Ni-O deactivated after about 17 h on stream, probably due to coke formation. La-(Ni,Rh)-0 showed improved stability compared to La-Ni-O. La-Co-0 gave mainly carbon dioxide during the first 30 h of the test. Then the activity changed to give mainly carbon monoxide. Some deactivation was observed during the next 50 h test. La-Cr-O produced mainly carbon dioxide. In order to stabilize the small metal clusters formed on the catalyst surface, a second metal will probably have to be included in the perovskite structure.
引用
收藏
页码:99 / 108
页数:10
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