Method to produce cis-1-chloro-3,3,3-trifluoropropene
AssigneeHoneywell International Inc.
InventorsDaniel C. Merkel, Konstantin A. Pokrovski
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Abstract
The present invention discloses methods to produce cis-1-chloro-3,3,3-trifluoropropene in high yield by the isomerization of trans-1-chloro-3,3,3-trifluoropropene. These isomers are also known as 1233zd(Z) and 1233zd(E), respectively. This is done by using reactive distillation whereby as cis-1-chloro-3,3,3-trifluoropropene is produced, it is removed from the reaction zone. This product removal causes a shift in the thermodynamic equilibrium of the reaction system, forcing the production of additional cis isomer.
Claims16
A method to produce cis-1-chloro-3,3,3-trifluoropropene (1233zd(Z)) by the isomerization of trans-1-chloro-3,3,3-trifluoropropene (1233zd(E), said method comprising the steps of:
- (a) providing a starting material feed stream comprising trans-1-chloro-3,3,3-trifluoropropene (1233zd(E));
- (b) conducting an isomerization reaction on the starting material feed stream to produce cis-1-chloro-3,3,3-trifluoropropene (1233zd(Z));
- and
- (c) removing the cis-1-chloro-3,3,3-trifluoropropene (1233zd(Z)) from the reaction as it is formed.
Dependencies are inferred from the claim text.