Catalytic hydrogenation of unsaturated dinitriles

Details Catalytic hydrogenation of unsaturated dinitriles Catalytic hydrogenation of unsaturated dinitriles

1980-12-05

1982-01-19

Doll, John

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

Organic compounds

Amino nitrogen containing

252451, 252452, 252460, 564492, 564493, C07C 8512

Patent

active

043118593

ABSTRACT:
Unsaturated dinitriles are hydrogenated to saturated diamines using a rhodium catalyst on a silica support having a surface area larger than 275 m.sup.2 /g, a pore volume of from about 1.0 to 1.5 mL/g and an average pore size of from about 100 to about 175 A. The supported rhodium catalyst is prepared by a method which includes the steps of contacting a silica support having the characteristics described above with a solution or dispersion of rhodium or a reducible compound of rhodium, and then subjecting the impregnated silica support to vacuum treatment.

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