Abstract
Catalytic activities of supported Pd were investigated for low temperature oxidation of methane. Pd/SnO 2 catalysts demonstrated excellent activity for methane oxidation in spite of their low surface area. The catalytic activity of Pd/SnO 2 was strongly affected by the preparation procedure. Impregnation of Pd on SnO 2 using aqueous solution of Pd(CH 3COO) 2 was most effective in enhancing the catalytic activity. The catalytic activity was also improved when well-crystallized SnO 2 was employed as a support material. TEM observations revealed that catalytic activity is strongly influenced by the dispersion state of Pd. For the active catalysts, strong interaction between Pd and SnO 2 support was observed in the adsorption of oxygen.
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