Method for the preparation of 2 chloro 1,1,1,2,3,3,3 heptafluoropropane
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United States of America Patent
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Feb 5, 2013
Grant Date -
Dec 9, 2010
app pub date -
Nov 10, 2008
filing date -
Nov 9, 2007
priority date (Note) -
Expired
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Abstract
A method of catalytically converting 2,2, dichlorohexafluoropropane (HFC-216aa) into 2 chloro 1,1,1,2,3,3,3 heptafluoropropane (HFC-217ba) including the step of exposing the 2,2 dichlorohexafluoropropane to a chromium-containing catalyst comprising a metal oxide, a halogenated metal oxide or a metal oxyhalide, which chromium-containing catalyst comprises 0.01% to 5.0% by weight zinc or a compound of zinc.
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