【摘 要】
：
The catalytic decomposition of dichlorodifluoromethane (CFC-12) in the presence of water vapor on a series of SO42- -promoted solid acids was investigated. CFC
【机 构】
：
Department of Chemistry, Fudan University, Shanghai 200433 , China,Department of Chemistry, Fudan Un
【出 处】
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Chinese Journal of Chemistry
论文部分内容阅读
The catalytic decomposition of dichlorodifluoromethane (CFC-12) in the presence of water vapor on a series of SO42- -promoted solid acids was investigated. CFC-12 was decomposed completely on SO42-/ZrO2, SO42-/TiO2, SO42-/SnO2, SO42-/Fe2O3 and SO42-/Al2O3 at 265℃, 270℃, 325℃, 350℃ and 325℃, respectively, and the selectivity to by-products was ne-gleclable. Obvious deactivation was found on SO42-/ZrO2 and SO42-/Al2O3 during several hours on stream, while the catalytic activity was maintained on SO42-/TiO2, SO42-/SnO2 and SO42-/Fe2O3 for 240 h on stream.
The catalytic decomposition of dichlorodifluoromethane (CFC-12) in the presence of water vapor on a series of SO42- -promoted solid acids was investigated. CFC-12 was decomposed completely on SO42- / ZrO2, SO42- / TiO2, SO42- / SnO2 , SO42- / Fe2O3 and SO42- / Al2O3 at 265 ° C, 270 ° C, 325 ° C, 350 ° C and 325 ° C, respectively, and the selectivity to by-products was ne-gleclable. Obvious deactivation was found on SO42- / ZrO2 and SO42- / Al2O3 during several hours on stream, while the catalytic activity was maintained on SO42- / TiO2, SO42- / SnO2 and SO42- / Fe2O3 for 240 h on stream.
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