Catalyst passivation in production of amines

Details Catalyst passivation in production of amines Catalyst passivation in production of amines

1980-04-21

1982-11-16

Hines, Robert V.

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

Organic compounds

Amino nitrogen containing

564490, 564498, C07C 8512

Patent

active

043595855

ABSTRACT:
This is an improvement in a process for the production of an amine such as hexamethylenediamine from a nitrile such as adiponitrile where the nitrile is hydrogenated under pressure in the presence of a Raney nickel catalyst, the reaction being conducted in a reactor from which is discharged a product stream containing both the amine and the Raney nickel catalyst. The improvement comprises charging to the process discharge stream containing the product amine and the Raney nickel catalyst, an inorganic base, whereby the Raney nickel catalyst is passivated and catalytic decomposition of the amine is substantially decreased.

REFERENCES:
patent: 3056837 (1962-10-01), Steeman
patent: 3821305 (1974-06-01), Bartalini et al.

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