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http://dx.doi.org/10.4491/eer.2005.10.3.131

THE PARTIAL COMBUSTION OF METHANE TO SYNGAS OVER PRECIOUS METALS AND NICKEL CATALYSTS SUPPORTED ON -γAL2O3 AND CEO2  

Seo, Ho-Joon (Division of Biotechnology and Chemical Engineering, Yosu National University)
Publication Information
Environmental Engineering Research / v.10, no.3, 2005 , pp. 131-137 More about this Journal
Abstract
The catalytic activity of precious metals(Rh, Pd, Pt) and nickel catalysts supported on ${\gamma}-Al_2O_3\;and\;CeO_2$ in the partial combustion of methane(PCM) to syngas was investigated based on the product distribution in a fixed bed now reactor under atmospheric condition and also on analysis results by SEM, XPS, TPD, BET, and XRD. The activity of the catalysts based on the syngas yield increased in the sequence $Rh(5)/CeO_2{\geq}Ni(5)/CeO_2>>Rh(5)/Al_2O_3>Pd(5)/Al_2O_3>Ni(5)/Al_2O_3$. Compared to the precious catalysts, the syngas yield and stability of the $Ni(5)/CeO_2$ catalyst were almost similar to $(5)/CeO_2$ catalyst, and superior to these of any other catalysts. The syngas yield of $Ni(5)/CeO_2$ catalyst was 90.66% at 1023 K. It could be suggested to be the redox cycle of the successive reaction and formation of active site, $Ni^{2-}$ and the lattice oxygen, $O^{2-}$ produced due to reduction of $Ce^{4-}$ to $Ce^{3-}$.
Keywords
Partial Combustion of Methane; Precious Metal Catalyst(Rh, Pd, Pt); Ni Catalyst; $CeO_2$; $Al_2O_3$; Redox cycle;
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Times Cited By KSCI : 1  (Citation Analysis)
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