METHOD FOR THE PREPARATION OF 2,3,3,3-TETRAFLUORPROPENE
Patent Information
- Application Number
- DE602022026676
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-04-15
- Filing Date
- 2022-04-07
- Publication Date
- 2025-12-10
- Estimated Expiration
- 2042-04-07
AI Technical Summary
Existing methods for producing 2,3,3-tetrafluoropropene face challenges such as complex processes, low reaction yields, high separation costs, and impurity accumulation, making them unsuitable for efficient industrial production.
A two-step method involving a telomerization step using a Lewis acid catalyst to convert chlorofluoromethane and trifluoroethylene into 3-chloro-1,1,1,2-tetrafluoropropane, followed by a dehydrochlorination step using activated carbon to produce 2,3,3-tetrafluoropropene, with optional co-production of 1-chloro-2,3,3-tetrafluoropropene or 1-chloro-3,3,3-trifluoropropene using noble metal or composite dehalogenation catalysts.
The method achieves high selectivity and purity of 2,3,3-tetrafluoropropene with simplified processes, suitable for industrial amplification, reducing separation steps and post-treatment difficulties.