Processes for producing and compositions comprising 2,3,3,3-tetrafluoropropene and/or 1,2,3,3-tetrafluoropropene

32 2323 222 2 23 222 223 2 323 222 2 323 222 22223 2A process is disclosed for making CFCF═CHor mixtures thereof with CHF═CFCHF. The process involves contacting CClCFCFand optionally CClFCFCClFwith Hin the presence of a palladium catalyst supported on a support of alumina, fluorided alumina and/or a...

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Bibliographic Details
Main Authors Nappa, Mario Joseph, Rao, Velliyur Mallikarjuna Nott, Sievert, Allen Capron
Format Patent
LanguageEnglish
Published 19.07.2011
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Summary:32 2323 222 2 23 222 223 2 323 222 2 323 222 22223 2A process is disclosed for making CFCF═CHor mixtures thereof with CHF═CFCHF. The process involves contacting CClCFCFand optionally CClFCFCClFwith Hin the presence of a palladium catalyst supported on a support of alumina, fluorided alumina and/or aluminum fluoride, to produce a product mixture including CH═CFCF(and when CClFCFCClFis present, CHF═CFCHF); recovering CH═CFCFor a mixture thereof with CHF═CFCHFfrom the product mixture. The present invention also provides another process that involves reacting CClCFCFand optionally CClFCFCClFwith Hin the presence of a hydrogenation catalyst to form CHCFCF(and when CClFCFCClFis present, CHFCFCHF); dehydrofluorinating; and recovering CH═CFCFor a mixture thereof with CHF═CFCHF.