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A method for the preparation of hexafluoropropene from cc1f2cc1fcf3 and azeotropic of cc1f2cc1fcf3 with hf
A method for the preparation of hexafluoropropene from cc1f2cc1fcf3 and azeotropic of cc1f2cc1fcf3 with hf
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机译:由cc1f2cc1fcf3制备六氟丙烯并与HF共沸的cc1f2cc1fcf3的方法
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摘要
A process for the manufacture of CF3CF=CF2 is disclosed. The process involves contacting 2,3-dichloro-1,1,1,2,3,3-hexafluoropropane with at least 0.1 mole of hydrogen in a reaction vessel of titanium, nickel or iron or their alloys, which is either empty or packed with particles or formed shapes of titanium, nickel or iron or their alloys, at a temperature within the range of from about 350 °C to about 600 °C and for a time sufficient to produce hexafluoropropene. Also disclosed are compositions which comprise hydrogen fluoride in combination with an effective amout of CC1F2CC1FCF3 to form an azeotrope or azeotrope-like composition with hydrogen fluoride. The compositions contain from about 8.7 to 33.6 mole percent CClF2CClFCF3.
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