Hydrodechlorination of 1,1-dichlorotetrafluoroethane and dichlorodifluoromethane catalyzed by Pd on fluorinated aluminas: The role of support material
- Univ. of Pittsburgh, PA (United States). Dept. of Chemical Engineering
The gas phase hydrodechlorination of CF{sub 3}CFCl{sub 2} to CF{sub 3}CFH{sub 2} and CF{sub 2}Cl{sub 2} to CF{sub 2}H{sub 2} catalyzed by Pd supported on Al{sub 2}O{sub 3}, a series of fluorinated Al{sub 2}O{sub 3}, and AlF{sub 3} was investigated. A combination of reaction kinetics investigations and characterization by in situ FTIR spectroscopy has been performed. It has been found that for reactions involving CF{sub 3}CFCl{sub 2}, all catalysts exhibit a rapid and significant decrease in activity; however, little change in activity with time on stream occurs with CF{sub 2}Cl{sub 2}. FTIR investigations suggest the occurrence of direct reaction between the CFC and the support material, which results in the consumption of hydroxyl groups during the early stages of reaction. The effect of fluorination of support on catalytic behavior of Pd is discussed.
- OSTI ID:
- 328301
- Journal Information:
- Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 1 Vol. 182; ISSN 0021-9517; ISSN JCTLA5
- Country of Publication:
- United States
- Language:
- English
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