Hydrodechlorination of chloropentafuoroethane over Pd/AlF3 catalysts
Introduction The catalytic hydrodechlorination of chlorofluorocarbons (CFCs) has attracted great attention, because it represents an HF-free route for the conversion of CFCs into hydrofluorocarbons (HFCs), which are the desirable substitutes for the ozone depleting CFCs. Chloropentafuoroethane (CF3CF2Cl, CFC-115) has been mainly used as refrigerant, the favored replacement for which is CF3CF2H (HFC-125). Thus, it is urgent to develop a catalytic process for the hydrodechlorination of CFC-115 into HFC-125 over highly efficient catalysts. Palladium supported on carbon or AlF3 seems to be optimal catalysts for this hydrodechlorination. Compared with Pd/C, Pd/AlF3 catalysts exhibit a superior selectivity for HFCs with a higher catalyst stability. However, its activity is generally low, probably own to the low surface area of support, leading to low Pd dispersion. In order to enhance their activities, the support AlF3 with high surface area is prepared. In the current study the hydrodechlorination of CFC-115 into HFC-125 over Pd/AlF3 catalysts is investigated in detail.
Yanping Nie Fumin Zhang Qiang Xiao Yijun Zhong Weidong Zhu
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua Zhejiang, 321004, China
国际会议
6th International Conference on Environmental Catalysis(第六届国际环境催化大会 ICEC 2010)
北京
英文
411-411
2010-09-12（万方平台首次上网日期，不代表论文的发表时间）