Abstract
A novel metal monolithic anodic γ-Al2O3 support was prepared by anodization using a clad aluminum plate. The catalytic combustion of methane on Pt/Al2O3/Alloy, Pd/Al2O3/Alloy and Pd-Pt/Al2O3/Alloy catalysts prepared by the impregnation method was studied. The catalysts were characterized by ICP, BET, and temperature-programmed oxidation (TPO). The results showed that at low temperatures (<500°C), both Pd/Al2O3/Alloy and Pd-Pt/Al2O3/Alloy showed high activity, but the activity of Pt/Al2O3/ Alloy catalyst was very poor. At high temperatures (>700°C), Pd-Pt/Al2O3/Alloy showed the best activity among these three catalysts, whereas the activity of Pd/Al2O3/Alloy decreased gradually. Therefore, it was concluded that the co-existence of Pd and Pt in the Al2O3/Alloy support in Pd-Pt/Al2O3/Alloy made its activity the best among that of all the catalysts studied over the entire temperature range (400-800°C) considered for methane combustion.
Original language | English (US) |
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Pages (from-to) | 902-909 |
Number of pages | 8 |
Journal | Journal of Chemical Engineering of Japan |
Volume | 42 |
Issue number | 12 |
DOIs | |
State | Published - Dec 20 2009 |
Externally published | Yes |
Keywords
- Anodic alumina catalyst
- Methane combustion
- Pd
- Pt
- Wall-type catalyst
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering