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US 5,856,594 AGranted
Process for the preparation of 1,1,2,2,3-pentafluoropropane
AssigneeAlliedSignal Inc.
InventorsAlagappan Thenappan, Michael Van Der Puy, David Nalewajek
Life of this patent
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Abstract
A process for the preparation of 1,1,2,2,3-pentafluoropropane is provided. In the process of the present invention, 1,3-dichloro-1,1,2,2,3-pentafluoropropane is catalytically reduced, using a platinum group metal supported on alumina, to 1,1,2,2,3-pentafluoropropane.
Claims8
A process for producing 1,1,2,2,3-pentafluoropropane comprising:
- contacting hydrogen and 1,3-dichloro-1,1,2,2,3-pentafluoropropane over a catalyst supported on alumina, the catalyst selected from the group consisting of palladium, platinum, ruthenium, rhodium, iridium, and mixtures thereof, under reaction conditions sufficient to produce 1,1,2,2,3-pentafluoropropane.
A process for producing 1,1,2,2,3-pentafluoropropane comprising:
- contacting hydrogen and 1,3-dichloro-1,1,2,2,3-pentafluoropropane, in a mole ratio of hydrogen to 1,3-dichloro-1,1,2,2,3-pentafluoropropane of from about 4:1 to about 5:1, over a palladium catalyst supported on alumina at a temperature from about 245.degree. C. to about 255.degree. C. for a contact time of about 13 seconds.
A process for producing 1,1,2,2,3-pentafluoropropane comprising:
- contacting hydrogen and 1,3-dichloro-1,1,2,2,3-pentafluoropropane over a palladium-catalyst supported on alumina under reaction conditions sufficient to produce 1,1,2,2,3-pentafluoropropane.
Dependencies are inferred from the claim text.