Catalyst separation in production of amines

Details Catalyst separation in production of amines Catalyst separation in production of amines

1983-03-18

1984-01-31

Shaver, Paul F.

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

Organic compounds

Amino nitrogen containing

564490, 564491, C07C 8714, C07C 8716

Patent

active

044291590

ABSTRACT:
In the production of amines from nitriles where the nitriles are hydrogenated under pressure in the presence of a Raney Nickel Catalyst using hydrogen produced from methane and containing CO.sub.2, a more efficient separation of the product hexamethylene diamine from the catalyst is obtained by maintaining a specified carbonate concentration. This specific carbonate concentration improves the settling characteristics of the catalyst and reduces catalyst carryover into the crude hexamethylene diamine during decantation.

REFERENCES:
patent: 3821305 (1974-06-01), Bartalini
patent: 4053516 (1977-10-01), Hammerstrom et al.
patent: 4359585 (1982-11-01), Campbell et al.
patent: 4395573 (1983-07-01), Cutchens et al.
U.S. Patent Applications: Ser. No. 369,443, filed Apr. 19, 1982, titled: "Improved Production and Separation of Amines", Charles E. Cutchens et al., inventors.

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