Organo-phosphorous catalyst composition and process for making t

Details Organo-phosphorous catalyst composition and process for making t Organo-phosphorous catalyst composition and process for making t

1976-05-10

1977-11-22

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252428, 252430, B01J 3112, B01J 3102

Patent

active

040595420

ABSTRACT:
Catalyst composition for the dimerization of acrylonitrile comprising an organo-phosphorus compound of formula ##STR1## bonded to a matrix of an inorganic oxide having surface --OH groups, especially of silica or alumina. Groups R and Y are hydrocarbyl. The catalyst compositions are prepared by heating the matrix with an appropriate phosphorus compound having group(s) X which react with --OH groups with the elimination of HX. The invention also relates to a process for the dimerization of acrylonitrile. Main products are 1,4-dicyanobutene-1 and 2-methylene glutaronitrile.

REFERENCES:
patent: 3644563 (1972-02-01), Bauer et al.
patent: 3726809 (1973-04-01), Allum et al.
patent: 3755490 (1973-08-01), Yoo et al.
patent: 3907852 (1975-09-01), Oswald et al.
patent: 3937742 (1976-02-01), Yoo

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