Method for producing hexafluoropropene and composition
By preheating trifluoromethane and controlling reaction conditions, the method suppresses the formation of octafluorocyclobutane during hexafluoropropene production, improving the selectivity and reducing by-products in the hexafluoropropene synthesis process.
Patent Information
- Application Number
- JP2024205765
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-06-05
AI Technical Summary
The production of hexafluoropropene (HFP) through the thermal decomposition of trifluoromethane (R23) and tetrafluoroethylene (TFE) often results in the formation of octafluorocyclobutane (C318), a compound with high global warming potential, which needs to be minimized.
A method involving preheating trifluoromethane to 350-700°C, mixing it with a second preheating heat transfer medium at a higher temperature, and reacting it with tetrafluoroethylene at 800-1000°C for a brief duration, while controlling the reactor pressure and using specific ratios and heat transfer mediums to suppress the formation of C318.
The method effectively reduces the production of octafluorocyclobutane, enhancing the selectivity of hexafluoropropene production and minimizing the generation of other by-products like hydrogen fluoride adducts and perfluoroisobutene.