CrOX-Y2O3 catalysts for vapor phase fluorination of dichlorodifluoromethane

…, LQ Xing, L Qian, X Chen, YJ Wang…

Index: Jia, Wen-Zhi; Xing, Li-Qiong; Qian, Lin; Chen, Xin; Wang, Yue-Juan; Lu, Ji-Qing; Chen, Ke-Feng; Zhang, Xue-Liang; Luo, Meng-Fei Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry, 2010 , vol. 49, # 9 p. 1212 - 1216

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Abstract

Abstract: A series of CrO xY 2 O 3 catalysts has been prepared using a deposition- precipitation method and tested for vapor phase fluorination of dichlorodifluoromethane (CCl 2 F 2) for synthesis of tetrafluoromethane (CF 4). A comparative study using CCl 2 F 2 and CClF 3 as the reactants for the fluorination reaction reveals that the conversion of CCl 2 F 2 to CClF 3 is very fast, while that of CClF 3 to CF 4 is a rate-determining step. Pre- ...