Catalyst for producing 1,1,1,2-tetrafluoroethane and method for

Details Catalyst for producing 1,1,1,2-tetrafluoroethane and method for Catalyst for producing 1,1,1,2-tetrafluoroethane and method for

1994-09-08

1996-03-19

Pal, Asok

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502168, 502169, 502170, 502228, 502320, B01J 2326

Patent

active

055004008

ABSTRACT:
There are a catalyst for producing 1,1,1,2-tetrafluoroethane represented as Cr.sub.a L.sub.b M.sub.c O.sub.x F.sub.y wherein L is Mg or Ca; M is one element selected from a group consisting of Ce, Ni, Zn, and Al; and each value of a, b, c, x and y are all between 0 and 2, and a method for preparing the same comprising the steps of: producing an admixture of a composition comprising chromium hydroxide hydrate and magnesium chloride or calcium chloride in a weight ratio of Cr to Mg or Ca ranging from 1:0.3 to 1:10 with an aqueous metal salt solution; reacting the admixture with an aqueous HF solution to give a paste; and sintering the paste.

REFERENCES:
patent: 3755477 (1973-08-01), Firth et al.
patent: 4129603 (1978-12-01), Bell
patent: 4139568 (1979-02-01), Baugh, Jr. et al.
patent: 4153675 (1979-06-01), Potter
patent: 4547483 (1985-10-01), Muller et al.
patent: 5155082 (1992-10-01), Tung et al.
patent: 5281568 (1994-01-01), Scott et al.
patent: 5321170 (1994-06-01), Corbin et al.

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