Process for the catalytic hydrogenation of nitrobenzene

Details Process for the catalytic hydrogenation of nitrobenzene Process for the catalytic hydrogenation of nitrobenzene

1979-08-16

1981-05-05

Doll, John

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

Organic compounds

Amino nitrogen containing

252469, 252470, 252472, 252474, C07C 8511

Patent

active

042658349

ABSTRACT:
A process for the hydrogenation of nitrobenzene to aniline is described wherein the nitrobenzene is contacted with hydrogen in the presence of a multi-component supported catalyst containing 1 to 20 grams of noble metal per liter of support and 1 to 20 grams per liter of support of one or more transition metal of the Groups IVa, Va, or VIa of the Periodic Table. The catalyst can contain 1 to 20 grams per liter of support of a further transition group element or of a member of the main group. The catalyst is one which has been prepared by a process involving pretreatment of the support with a base prior to impregnation with the catalytically active substances, followed by drying to a residual moisture content of less than 10 percent of the maximum absorbency of the support.

REFERENCES:
patent: 2823235 (1958-02-01), Graham et al.
patent: 3265636 (1966-08-01), Spiegler
patent: 3472897 (1969-10-01), Pryor et al.
patent: 3666813 (1972-05-01), Hindin et al.
patent: 3781227 (1973-12-01), Sokolsky et al.
patent: 3804779 (1974-04-01), Kent et al.
patent: 4137254 (1979-01-01), Larkin

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