Patent ID: 11904301
Assignee: THE CHEMOURS COMPANY FC, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 13:
14. A method of regenerating and recovering a spent antimony fluorohalide catalyst to produce a chlorinated antimony catalyst comprising:
(a) treating a spent antimony fluorohalide catalyst comprising
(i) SbFnX5-n, wherein n is an integer of 1 to 5, and X is a halogen other than fluorine, or
(ii) SbFmX′3-m, wherein m is an integer of 1 to 3, and X′ is a halogen other than fluorine, or mixtures of (i) and (ii),

with a regenerating agent chosen from 2-chloro-3,3,3-trifluoropropene (1233xf), 1,1,1,3-tetrachloropropane (250th), 2-chloro-1,1,1,2-tetrafluoropropane (244bb), and combinations of two or more of 1233xf, 250fb, and 244bb, under conditions effective to produce a chlorinated antimony catalyst; and
(b) recovering the chlorinated antimony catalyst.