Supported copper catalyst, process for its preparation and proce

Details Supported copper catalyst, process for its preparation and proce Supported copper catalyst, process for its preparation and proce

1990-09-20

1992-03-17

Robinson, Allen J.

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

Organic compounds

Amino nitrogen containing

564399, 564418, 564420, C07C20900

Patent

active

050970712

ABSTRACT:
The novel copper catalyst on an Al.sub.2 O.sub.3 -containing carrier which is impregnated with compounds of manganese and of one or more rare earth metals, having a Cu content of 0.1-5% by weight, a total content of compounds of manganese and of the rare earth metal or metals of 0.05 to 8% by weight, calculated as metals, is described, the weight ratio of rare earth metal(s) to manganese being 5:1-1:5, calculated as metal, and all percentages being relative to the total weight of the catalyst. Such catalyst is prepared by first impregnating the carrier with compounds of manganese and of the rare earth metal or metals, then fixing the copper salt on the impregnated carrier and activating the catalyst in a preferred manner by treatment with H.sub.2 at 150.degree. to 350.degree. C. Such a catalyst is suitable, for example, for the N-alkylation of aromatic amines with alkanols, where the aromatic amines can be prepared from the parent nitro compounds in an alkylation reactor with simultaneous addition of H.sub.2.

REFERENCES:
patent: 2402440 (1946-06-01), Owen
patent: 2580284 (1951-12-01), Deahl et al.
patent: 3538162 (1970-11-01), Dovell
patent: 3637820 (1972-01-01), Dodman et al.
patent: 3708539 (1973-01-01), Fenton
patent: 4183868 (1980-01-01), Radimerski et al.

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