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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 6
BKCSDE 23(6)
June 20, 2002 

Partial Oxidation of Methane over CeO2Catalyst
Hyun-Seong Roh, Ki-Won Jun, Seung-Chan Baek, Sang-Eon Park
CeO2, Methane, Partial oxidation.
Partitial oxidation of methane has conducted over CeO2 and it has been found that CeO2 has an extraordinary catalytic activity in the reaction. its activity was strongly dependent on the CH4/O2 ratio. Total combustion was dominant with stoichiometric feed ratio ( CH4/O2=2.0 ) but partial oxidation was favoarble with oxygen deficient feed condition. Meanwhile, oscillatory partial oxidation was achieved between the CH4/O2 ratio of 3.8 and 4.3 and the period depended upon the feed composition. The proposed reaction mechanism is that oxygen vacancies in reduced ceria are supplied with oxygen molecules from the reactant, and then activate adsorbed oxygen, followed by releasing activated oxygen species reacting with methane to produce H2 and CO
799 - 802
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