Abstract
The synthesis of trifluoroacetaldehyde by vapor-phase oxidation of 2,2,2-trifluoroethanol using supported vanadium catalysts was studied. Significant differences were observed in the reaction outcomes resulting from different types of catalysts. The ZrO 2- and Al 2O 3-supported catalyst demonstrated both high catalytic activity and selectivity. The addition of co-catalysts such as MoO 3 or SnO 2 improved catalytic performance (Selectivity: up to 91%; S.T.Y.: >200 g L −1 h −1). The experimental results on catalyst lifetime showed a marked decrease in the activity of the Al 2O 3-supported catalyst within tens of hours, while the ZrO 2-supported catalyst showed little, if any, performance alterations for 2000 h.
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