Deactivation of Alumina-Zirconia Catalysts Prepared from Boemite and .GAMMA.-Alumina for Hydrolysis of Chloropentafluoroethane (CFC-115)

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概要

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• Alumina–zirconia catalysts for carrying out the hydrolysis of chloropentafluoroethane (CFC-115) were prepared from boemite and γ-alumina, and their deactivation was investigated. On the basis of the characterization results for fresh and used catalysts, catalyst deactivation was attributed to poisoning by fluoride ions, which decreased the acidity of the catalysts. The deactivation of alumina–zirconia catalysts prepared from boemite decreased with increasing alumina content, while the deactivation of alumina–zirconia catalysts prepared from γ-alumina was found to be independent of the alumina content. As the alumina–zirconia catalysts prepared from boemite had two types of acidity, it is suggested that the two types of acidity may be different in the catalyst deactivation for the hydrolysis of CFC-115.

• The Society of Chemical Engineers, Japanの論文

著者

• Nagata Hideo

  Department of Chemical and Biological Engineering, Sasebo National College of Technology

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• Deactivation of Alumina-Zirconia Catalysts Prepared from Boemite and γ-Alumina for Hydrolysis of Chloropentafluoroethane (CFC-115)

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