Low-Temperature CH4 Total Oxidation on Catalysts Based on High Surface Area SnO2 |
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Authors: | Xiang Wang and You-chang Xie |
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Institution: | (1) Institute of Physical Chemistry, Peking University, Beijing, 100871, China |
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Abstract: | Pure SnO2, sulfated SnO2-SO4
2- and Pd supported on SnO2 and SnO2-SO4
2- were prepared from SnO2 precursor with high surface area, and used for CH4 deep oxidation. The catalysts were characterized by means of N2-BET, XRD, TG-DTA, XPS and TPD. SnO2-SO4
2- shows higher activity than SnO2, due to the presence of more active oxygen species, superacid sites and its higher BET surface area. Pd/SnO2 and Pd/SnO2-SO4
2- display essentially the same activity to each other, while it is much higher than the activity on SnO2 and SnO2-SO4
2-. The main reason is ascribed to the concerted action between Pd and the supports. |
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Keywords: | CH4 deep oxidation SnO2 catalysts sulfated SnO2 supported Pd catalysts |
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