Process for catalytic conversion of mixtures of HCFO-1233zd(Z) and HCFC-244fa into HCFO-1233zd(E)
AssigneeHoneywell International Inc.
InventorsChristian Jungong, Daniel C. Merkel
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Abstract
A method for conversion of a composition containing HCFO-1233zd(Z) and HCFC-244fa to form HCFO-1233zd(E) by reacting a mixture including HCFO-1233zd(Z) and HCFC-244fa in a vapor phase in the presence of a catalyst to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E). The catalyst may be a chromium-based catalyst such as chromium trifluoride, chromium oxyfluoride, or chromium oxide, for example.
Claims16
A method for the simultaneous conversion of a composition containing (Z)-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(Z)) and 1 chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) to form (E)-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)), comprising the steps of:
- providing a composition including HCFO-1233zd(Z) and HCFC-244fa;
- and
- reacting the composition in a vapor phase in a reactor in the presence of a chromium trifluoride (CrF3) catalyst at a temperature between 80° C. and 250° C. and at a pressure above 0 psig to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E).
Dependencies are inferred from the claim text.