Journal
CATALYSIS LETTERS
Volume 128, Issue 1-2, Pages 144-153Publisher
SPRINGER
DOI: 10.1007/s10562-008-9707-y
Keywords
Catalytic partial oxidation of methane; Metal foam; Nickel
Categories
Funding
- Natural Sciences and Engineering Research Counsel of Canada (NSERC)
- Province of Ontario
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The catalytic activity of an industrially supplied nickel foam was evaluated for the conversion of methane to syngas via partial oxidation in air. At a temperature of 850 A degrees C, 89% CH4 conversion was attained with H-2 and CO selectivity of 96 and 97%, respectively. The catalytic performance of nickel foam was found to be comparable to an in-house prepared 10%wt Ni/gamma-Al2O3. Interestingly the foam catalyst was found to be capable of light-off without in situ H-2 reduction unlike the supported nickel catalyst. CH4 conversion and H-2 and CO selectivity were found to increase as the inlet temperature increased from 650 to 850 A degrees C. Increasing the contact time by reducing the gas flow rate resulted in reduced CH4 conversion and H-2 and CO selectivity, indicating substantial transport limitations. A key finding was that oxidative pretreatment of the nickel foam led to the formation of a surface oxide layer resulting in an increase in surface area and an improvement in catalytic activity.
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