Catalytic process for the preparation of trifluoroacetaldehyde

Details Catalytic process for the preparation of trifluoroacetaldehyde Catalytic process for the preparation of trifluoroacetaldehyde

1984-12-07

1986-04-01

Lone, Werren B.

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

Organic compounds

Oxygen containing

568458, 568490, C07C 4563

Patent

active

045799768

ABSTRACT:
There is disclosed a continuous catalytic process for the preparation of trifluoroacetaldehyde through fluorination in the gaseous phase of trichloroacetaldehyde in a single reaction zone at a temperature between 230.degree. C. and 260.degree. C., on a catalyst comprising a gamma alumina impregnated by Cr.sub.2 O.sub.3 in an amount of 1.5 to 4 atoms of chromium per liter of alumina and activated at a temperature between 300.degree. C. and 400.degree. C. by a mixture of hydrofluoric acid and 1,1,2-trichloro-1,2,2-trifluoro-ethane.

REFERENCES:
patent: 3017436 (1962-01-01), Hamilton
patent: 3787489 (1974-01-01), Antonini et al.
patent: 3801645 (1974-04-01), Dalman
patent: 3803241 (1974-04-01), Stolkin et al.

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