Catalytic decomposition of CFC-12 on solid acids SO42-/MxOy(M = Zr, Ti, Sn, Fe, Al)

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2000,（3）
• 页码范围: 341-345
• 页数: 5页
• 语种: 英文

摘要

The catalytic decomposition of dichlorodifluoromethane ( CFC12) 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 neglectable. 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.