Catalytic combustion of methane over supported bimetallic Pd catalysts: Effects of Ru or Rh addition |
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Authors: | Chong Kul Ryu Min Wong Ryoo In Soo Ryu and Sung Kyu Kang |
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Affiliation: | Korea Institute of Energy Research, 71-2, Jang-Dong, Yusong-ku Taejon 305-600 South Korea |
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Abstract: | A series of Pd/γ-Al2O3 catalysts with various amounts of Ru or Rh with, and/or without, BaO were prepared by successive incipient wetness impregnation. The catalysts were investigated for the catalytic methane combustion before, and after, H2S poisoning in an oxygen-rich atmosphere. The addition of ruthenium enhanced the catalytic activity for methane oxidation even after H2S poisoning while maintaining the initial catalytic activity of the fresh catalyst. These results are explained in terms of dispersion of palladium by ruthenium and poisoning resistance of ruthenium. The addition of rhodium did not improve the overall activity in methane oxidation. |
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Keywords: | Catalytic combustion Methane Palladium Ruthenium Rhodium Barium oxide Poisoning Bimetallic catalyst |
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