Hydrogenation of fluoroacids with rhenium-fluorided alumina catalyst
AssigneePhillips Petroleum Company
InventorsMarvin M. Johnson, Gerhard P. Nowack, Paul S. Hudson, Benedict H. Ashe, Jr., deceased
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Abstract
A fluoroacid is continuously hydrogenated to a corresponding alcohol by contact with a catalyst comprising at least one of rhenium and a hydrogen reducible rhenium compound supported on a fluorided alumina catalyst support. In one embodiment perfluorobutyric acid is catalytically reduced to 2,2,3,3,4,4,4-heptafluoro n-butanol employing a fluorided activated alumina impregnated with perrhenic acid.
Claims8
A process for the continuous hydrogenation of an organic fluoroacid to a corresponding alcohol which comprises subjecting said acid to contact with a catalyst under hydrogenation conditions consisting essentially of at least one of rhenium and a hydrogen reducible rhenium compound supported on a fluorided alumina catalyst;
- wherein said organic fluoroacid is represented by the general formula RCOOH wherein R is an aliphatic hydrocarbon radical in which at least one hydrogen atom has been replaced by a fluorine atom;
- and wherein said hydrogenation is conducted at a temperataure in the approximate range of from about 175.degree. to about 275.degree. C.
Dependencies are inferred from the claim text.