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US 9,040,759 B2Granted
Preparation of fluorinated olefins via catalytic dehydrohalogenation of halogenated hydrocarbons
AssigneeHoneywell International Inc.
InventorsHaiyou Wang, Hsueh Sung Tung, Sudip Mukhopadhyay
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Abstract
A process for making a fluorinated olefin having the step of dehydrochlorinating a hydrochlorofluorocarbon having at least one hydrogen atom and at least one chlorine atom on adjacent carbon atoms, preferably carried out in the presence of a catalyst selected from the group consisting of (i) one or more metal halides, (ii) one or more halogenated metal oxides, (iii) one or more zero-valent metals/metal alloys, (iv) a combination of two or more of the foregoing.
Claims23
A process for making 2,3,3,3-tetrafluoropropene, comprising:
- dehydrochlorinating 1,1,1,2-tetrafluoro-2-chloropropane in the presence of at least one catalyst selected from the group consisting of NaF, fluorinated MgO, MgF2, CaF2, fluorinated Cr2O3, FeF3, LiCl with MgF2, KCl with MgF2, CsCl with MgF2, CsCl, Fe with MgF2, Co with MgF2, Ni with MgF2, Pd with BaSO4, Ni, Iconel 600, and Inconel 625.
Dependencies are inferred from the claim text.