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Partial oxidation of methane to synthesis gas using La-M-O catalysts

✍ Scribed by Åse Slagtern; Unni Olsbye

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
648 KB
Volume
110
Category
Article
ISSN
0926-860X

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✦ Synopsis

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°C. La-Ni-0 deactivated after about 17 h on stream, probably due to coke formation. La-(Ni,Rh)-0 showed improved stability compared to La-Ni-0. La-Co-O 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-0 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.

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