The Chemours Company
Process for the reduction of R.sub.fC=CX impurities in fluoroolefins

Abstract:

This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one impurity with at least one zeolite to reduce the concentration of the at least one impurity in the mixture; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF.sub.3CF.dbd.CH.sub.2, CF.sub.3CH.dbd.CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF.sub.3CCl.dbd.CH.sub.2, CF.sub.3CH.dbd.CHCl, and mixtures thereof.