Process for the preparation of a mixture of cyclohexylamine and

Details Process for the preparation of a mixture of cyclohexylamine and Process for the preparation of a mixture of cyclohexylamine and

1992-10-02

1994-12-06

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564402, 564403, 564431, 564447, 564457, 564462, C07C20916, C07C20918

Patent

active

053712943

ABSTRACT:
Cyclohexylamine and dicyclohexylamine can be prepared as a mixture with one another by reaction of phenol with aniline, ammonia or a mixture of aniline and ammonia in the presence of hydrogen over a catalyst, the reaction being carried out according to the invention over a palladium catalyst which has a support of niobic acid or tantalic acid or a mixture of niobic acid and tantalic acid or a support containing such acids. The reaction is carried out at 100.degree.-220.degree. C. under an H.sub.2 partial pressure of 0.5-500 bar.

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patent: 4503251 (1985-03-01), Gray et al.
patent: 4666881 (1987-05-01), Wood et al.
patent: 4952549 (1990-08-01), Immel et al.

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