Compositions and methods for synthesis of 2,3-dichloro-1,1,1,2-tetrafluoropropane and 2,3,3,3-tetrafluoropropene
AssigneeThe Chemours Company Fc, LLC
InventorXuehui Sun
Life of this patent
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Abstract
A method of synthesizing 2,3,3,3-tetrafluoropropene (1234yf) from 2-chloro-3,3,3-trifluoropropene (1233xf). The 2-chloro-3,3,3-trifluoropropene (1233xf) is reacted in the vapor phase, in the presence of a catalyst, at a temperature and pressure sufficient to selectively convert the 2-chloro-3,3,3-trifluoropropene (1233xf) to 2,3,3,3-tetrafluoropropene (1234yf) without the use of antimony-based catalysts.
Claims10
A composition comprising:
- (a) -1-chloro-2,3,3,3-tetrafluoropropene (1224 yd),
- (b) at least one of 2,3,3,3-tetrafluoropropene (1234yf) and 1-chloro-trifluoropropyne,
- (c) optionally 1,2-dichloro-3,3,3-trifluoropropene (1223xd), and
- (d) at least one additional compound selected from 2-chloro-3,3,3-trifluoropropene (1233xf), 3,3,3-trifluoropropene (1243zf), 2-chloro-1,1,1,2 tetrafluoropropane (244bb), 2-bromo-3,3,3-trifluoropropene (1233xfB), 2,3-dichloro-1,1,1-trifluoropropane (243 db), 3,3,3-trifluoropropyne, 1-chloro-1,2,3,3,3-pentafluoropropene (1215yb), 2-chloro-1,3,3,3-tetrafluoropropene (1224xe), 3-chloro-1,1,1-trifluoropropane (253fb), 1,1,1,2-tetrafluoropropane (254eb), 1,1-dichloro-2,3,3,3-tetrafluoroprop-1-ene (1214ya), 2,2-dichloro-1,1,1-trifluoroethane (123), and 2-chloro-1,1,1,2-tetrafluoroethane (124),
- wherein the amount of 1-chloro-2,3,3,3-tetrafluoropropene (1224 yd) is greater than the amount of the at least 2,3,3,3-tetrafluoropropene (1234yf) and 1-chloro-trifluoropropyne, optional 1,2-dichloro-3,3,3-trifluoropropene (1223xd), and the at least one additional compound.
A composition comprising 1-chloro-2,3,3,3-tetrafluoropropene (1224 yd), 1-chloro-trifluoropropyne, and at least one additional compound selected from the group consisting of 2-chloro-3,3,3-trifluoropropene (1233xf), 2,3,3,3-tetrafluoropropene (1234yf), 3,3,3-trifluoropropene (1243zf), 2-chloro-1,1,1,2 tetrafluoropropane (244bb), (2-bromo-3,3,3-trifluoropropene (1233xfB), 2,3-dichloro-1,1,1-trifluoropropane (243 db), 3,3,3-trifluoropropyne, 1-chloro-1,2,3,3,3-pentafluoropropene (1215yb), 1,2-dichloro-3,3,3-trifluoropropene (1223xd), 2-chloro-1,3,3,3-tetrafluoropropene (1224xe), 3-chloro-1,1,1-trifluoropropane (253fb), 1,1-dichloro-2,3,3,3-tetrafluoroprop-1-ene (1214ya), 2,2-dichloro-1,1,1-trifluoroethane (123), and 2-chloro-1,1,1,2-tetrafluoroethane (124).
A composition comprising 1-chloro-2,3,3,3-tetrafluoropropene (1224 yd),
- (i) one of 1-chloro-trifluoropropyne and 1,2-dichloro-3,3,3-trifluoropropene (1223xd),
- (ii) one of 2,3,3,3-tetrafluoropropene (1234yf) and 2-chloro-3,3,3-trifluoropropene (1233xf), and
- (iii) at least one additional compound selected 2-bromo-3,3,3-trifluoropropene (1233xfB), 2,3-dichloro-1,1,1-trifluoropropane (243 db), 1-chloro-1,2,3,3,3-pentafluoropropene (1215yb), 2-chloro-1,3,3,3-tetrafluoropropene (1224xe), 3-chloro-1,1,1-trifluoropropane (253fb), 1,1,1,2 tetrafluoroprop-1-ene (254eb), 1,1-dichloro-2,3,3,3-tetrafluoroprop-1-ene (1214ya), 2,2-dichloro-1,1,1-trifluoroethane (123), and 2-chloro-1,1,1,2-tetrafluoroethane (124).
Dependencies are inferred from the claim text.