COMPOSITIONS CONTAINING HFO-1234ZE, HFO-1225ZC AND HFO-1234YF AND PROCESSES FOR PRODUCING AND USING THE COMPOSITIONS
Patent Information
- Application Number
- MX2021013038
- Authority / Receiving Office
- MX · MX
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-04-24
- Filing Date
- 2021-10-25
- Publication Date
- 2026-05-19
- Estimated Expiration
- 2041-04-26
AI Technical Summary
There is a need for refrigerant compositions that have low ozone depletion potential and low global warming potential, and efficient processes to produce these compositions without the need for additional purification or separation steps to remove excessive amounts of undesirable isomers.
A method involving the gas-phase dehydrofluorination of 1,1,1,3,3-pentafluoropropane using a catalyst such as fluorinated Cr2O3 or Cr/Ni on fluorinated alumina, in the presence of an oxygen-containing gas, to produce a mixture of HFO-1234ze(E), HFO-1225zc, and HFO-1234yf, minimizing the need for isomer separation or purification steps.
The process achieves a high yield of the desired isomer (HFO-1234ze(E)) while eliminating the need for additional purification steps, resulting in compositions suitable for use as refrigerants with low ozone depletion and global warming potential, suitable for refrigeration systems and other applications.