Catalytic chlorofluorination process for producing CF.sub.3 CHCl

Details Catalytic chlorofluorination process for producing CF.sub.3 CHCl Catalytic chlorofluorination process for producing CF.sub.3 CHCl

1992-11-06

1993-11-02

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570134, 570135, 570156, 570157, 570161, 570168, C07C 1710, C07C 1908

Patent

active

052585611

ABSTRACT:
A chlorofluorination process is disclosed which employs a catalyst comprising chromium oxide for producing halohydrocarbons of the formula CHXFCF.sub.3 (where X is selected from Cl and F). The process is characterized by feeding a combination of components comprising, (i) at least one halohydrocarbon starting compound of the formula CY.sub.3 CH.sub.2 R.sup.1 (where R.sup.1 is selected from the group of H and F and each Y is independently selected from the group of Cl and F), (ii) hydrogen fluoride and (iii) chlorine to a reaction zone; contacting said combination of compounds in said reaction zone with a catalyst comprising chromium oxide at an elevated temperature to produce reaction zone products containing halohydrocarbon reaction products of the formula CHXFCF.sub.3 together with halohydrocarbons of the formula CZ.sub.3 CHR.sup.2 R.sup.3 (wherein R.sup.2 is selected from the group of H and Cl, R.sup.3 is selected from the group of H, Cl and F, and each Z is independently selected from Cl and F); and recovering at least a portion of the reaction products from the reaction zone including at least one halohydrocarbon of the formula CHXFCF.sub. 3. Optionally, a portion of the reaction zone products can be recycled to the reaction zone; and the combination of components contacted with the catalyst can optionally further comprise at least one halohydrocarbon recycle compound of said formula CZ.sub.3 CHR.sup.2 R.sup.3. The process may be controlled to produce compounds of the formula CHXFCF.sub.3 in the recovered reaction products as the major component of the halogen-substituted hydrocarbon reaction products in the recovered reaction products.

REFERENCES:
patent: 3377287 (1968-04-01), Kvalnes et al.
patent: 3755477 (1973-08-01), Firth et al.
patent: 4110407 (1978-08-01), Anello et al.
patent: 4129603 (1978-12-01), Bell
patent: 4158675 (1979-06-01), Potter
patent: 4792643 (1988-12-01), Sobolev
patent: 5036036 (1991-07-01), Lerou
patent: 5043491 (1991-08-01), Webster et al.
patent: 5057634 (1991-10-01), Webster et al.
patent: 5068472 (1991-11-01), Webster et al.
patent: 5177273 (1993-01-01), Bruhnke et al.

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