Method for production of 1-chloro-3,3,3-trifluoropropene
AssigneeCentral Glass Company, Limited
InventorsHideaki Imura, Naoto Takada
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Abstract
A production method of 1-chloro-3,3,3-trifluoropropene according to the present invention includes bringing a composition containing a compound of the general formula (1): CF3—CH2—CHClX (where X is a fluorine atom or a chlorine atom) into contact with a solid catalyst in the presence of hydrogen chloride. In this production method, the composition containing ozone depleting HCFC such as 3-chloro-1,1,1,3-tetraluoforpropane or 3,3-dichloro-1,1,1-trifluoropropane can be efficiently converted to the 1-chloro-3,3,3-trifluoropropene, which has less influence on the global environment and is useful as a solvent, a cleaning agent, a coolant, a working fluid, a propellant, a raw material for fluorinated resins etc.
Claims5
A method for producing 1-chloro-3,3,3-trifluoropropene, comprising:
- forming a first composition containing 1,1,1,3,3-pentafluoropropane, CF3—CH2—CHClF, and hydrogen chloride by reacting 1,1,1,3,3-pentachloropropane and hydrogen fluoride;
- recovering the hydrogen chloride from the first composition;
- distilling a residue remaining after the recovery of the hydrogen chloride, thereby forming a second composition containing CF3—CH2—CHClF;
- and
- bringing the second composition into contact with a solid catalyst in the presence of the recovered hydrogen chloride.
Dependencies are inferred from the claim text.