| Issue |
Korean Journal of Chemical Engineering,
Vol.14, No.6, 502-506, 1997
Vol.14, No.6, 502-506, 1997
Catalytic Fluorination of HCFC-133a (1,1,1-Trifluoro-2-Chloroethane)
Catalytic fluorination of HCFC-133a was performed over metal oxide catalysts. Chromium oxide showed the best catalytic activity among several metal oxides tested. An increase in crystallinity with decreased surface area resulted in a decrease of catalytic activity for the fluorination reaction. Active phase of chromia is Cr-O-F-OH having a proper ratio of O/F and a high hydroxyl content. The hydroxyl content on the catalyst is strongly dependent on support material. The selectivity to HFC-134a is independent of the O/F ratio on the Cr surface.
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