Catalytic decomposition of CFC-12 on solid acids SO_4^(2-)M_xO_y (M = Zr, Ti, Sn, Fe, Al)

Catalytic decomposition of CFC-12 on solid acids SO_4^(2-)M_xO_y (M = Zr, Ti, Sn, Fe, Al)

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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-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℃, 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.

作者马臻华伟明唐颐高滋

机构地区 Department of Chemistry

出处《Chinese Journal of Chemistry》 SCIE CAS CSCD 2000年第3期341-345,共5页 中国化学（英文版）

基金 Project supported by the National Climbing Plan of China.

关键词 Environmental catalysis freon decomposition solidacids Environmental catalysis, freon decomposition, solidacids

分类号 O643.3 [理学—物理化学]

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Chinese Journal of Chemistry

2000年第3期

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Catalytic decomposition of CFC-12 on solid acids SO_4^(2-)M_xO_y (M = Zr, Ti, Sn, Fe, Al)

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