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US 11,999,673 B2Granted
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
Life of this patent
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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 HCFC-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 simultaneous conversion of a mixture of HCFO-1233zd(Z) and HCFC-244fa to form HCFO-1233zd(E), comprising:
- providing a mixture including HCFO-1233zd(Z) and HCFC-244fa;
- and
- reacting the HCFO-1233zd(Z) and HCFC-244fa mixture in a vapor phase in the presence of a catalyst selected from the group consisting of chromium trifluoride (CrF3), chromium oxide (Cr2O3), chromium oxyfluoride, aluminum fluoride, and combinations thereof to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E),
- wherein said reacting step is conducted at a temperature between 80° C. and 275° C., and wherein said reacting step achieves a conversion of HCFO-1233zd(Z) to HCFO-1233zd(E) of 88% or greater.
1 more element
Dependencies are inferred from the claim text.