Catalytic manufacture of vinyl fluoride
First Claim
1. A process for the manufacture of vinyl fluoride from 1,1-difluoroethane which comprises contacting said 1,1-difluoroethane at an elevated temperature with a catalyst containing at least one divalent Group II metal compound, characterized by:
- contacting said 1,1-difluoroethane at a temperature of from about 200°
C. to 400°
C. with a multiphase catalyst composition consisting essentially of (a) fluorides of at least one divalent metal selected from magnesium and zinc, and (b) fluorides of trivalent aluminum;
wherein phases of said divalent fluorides are homogeneously dispersed with phases of said trivalent fluorides.
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Abstract
A process for the manufacture of vinyl fluoride (i.e., CH2 ═CHF, VF or 1141) from 1,1-difluoroethane (i.e., CH3 CHF2, F152a or HFC-152a) is disclosed which involves contacting the 1,1-difluoroethane at an elevated temperature (200° C.-400° C.) with a multiphase catalyst composition consisting essentially of (a) fluorides of at least one divalent metal selected from magnesium and zinc, and (b) fluorides of trivalent aluminum, in which phases of the divalent fluorides are homogeneously dispersed with phases of the trivalent fluorides.
7 Citations
8 Claims
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1. A process for the manufacture of vinyl fluoride from 1,1-difluoroethane which comprises contacting said 1,1-difluoroethane at an elevated temperature with a catalyst containing at least one divalent Group II metal compound, characterized by:
contacting said 1,1-difluoroethane at a temperature of from about 200°
C. to 400°
C. with a multiphase catalyst composition consisting essentially of (a) fluorides of at least one divalent metal selected from magnesium and zinc, and (b) fluorides of trivalent aluminum;
wherein phases of said divalent fluorides are homogeneously dispersed with phases of said trivalent fluorides.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification