Purification of 1,1,1,2-tetrafluoroethane

Details Purification of 1,1,1,2-tetrafluoroethane Purification of 1,1,1,2-tetrafluoroethane

1993-07-12

1994-02-22

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 1738

Patent

active

052889300

ABSTRACT:
A process for the removal of 1-chloro-2,2-difluoroethylene from 1,1,1,2-tetrafluoroethane by contacting the mixture with a zeolite having a mean pore size in the range of 3.5 .ANG. and 4.8 .ANG. and having potassium as counter cation.
The zeolite having potassium as counter-cation may be produced by cation-exchange with a commercially available zeolite, for example AW-500.

REFERENCES:
patent: 4906796 (1990-03-01), Yates
patent: 5087778 (1992-02-01), Yates
patent: 5233107 (1993-08-01), Jansen
Rabo Zeolite Chemistry and Catalysis ACS monograph 171 (1976) p. 34.

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