Catalytic Decomposition of CF_4 over AIPO_4 - Based Catalysts
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The most stable perfluorocarbon, CF<SUB>4</SUB>, was decomposed to CO<SUB>2</SUB> at above 550 °C in the presence of water vapor over AlPO<SUB>4</SUB> in which 10 atomic % of Al ions are substituted by Ce. Catalytic activity slightly decreased within first 50 h and then took a stationary state for succeeding 50 h. No changes in the structure of catalyst were observed after 100 h reaction. Mg pyrophosphate and phosphates of Ca, B, Fe, Zn, Bi, and Ni were not active up to 700 °C. The addition of Ce, La, Pr, Nd, Gd, Yb, Er, or Y into AlPO<SUB>4</SUB> increased the catalytic activity.
- Chemistry Letters
Chemistry Letters 1999(5), 417-418, 1999-05-05
The Chemical Society of Japan