INTEGRATED PROCESS FOR THE PRODUCTION OF Z-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

摘要

The present invention provides a step of contacting 1,1,1-trifluorotrichloroethane with hydrogen in the presence of a catalyst containing ruthenium to produce a mixture product containing 1316mxx, wherein 1316mxx is a mixture of Z- and E- isomers. recovering, contacting said 1316mxx with hydrogen in the presence of a catalyst selected from the group consisting of copper on carbon, nickel on carbon, copper and nickel on carbon, and copper and palladium on carbon, comprising E- or Z-CFC-1326mxz cis-1,1,1,4,4,4-hexa comprising the steps of producing a second mixed product of A process for the preparation of fluoro-2-butene is disclosed. E- or Z-1326mxz can be dehydrochlorinated in a basic aqueous solution with alkali metal hydroxide in the presence of a phase transfer catalyst to produce hexafluoro-2-butane, which is then either Lindler's catalyst or elemental lanthanide or silver It can be selectively hydrogenated using one of the palladium catalysts further comprising Z-1,1,1,4,4,4-hexafluoro-2-butene.