Catalyst for the preparation of aniline

Details Catalyst for the preparation of aniline Catalyst for the preparation of aniline

1993-04-21

1994-04-19

Pal, Asok

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

502180, 502326, 564423, B01J 2118, B01J 2340

Patent

active

053045254

ABSTRACT:
A process for the preparation of aniline by hydrogenation of nitrobenzene in the gas phase in the presence of a catalyst containing a noble metal is described. The process can be carried out in an improved manner if the catalyst employed is palladium on graphite or petrol coke, as the support, containing 0.001-1% by weight of Pd, based on the total weight of the catalyst, it being possible for the catalyst also to contain, in addition to the Pd, 0.001-0.5% by weight of Ir and/or 0.001-0.3% by weight of Rh, all figures being based on the total weight of the catalyst.

REFERENCES:
patent: 3458576 (1969-07-01), Bryan
patent: 3719739 (1973-03-01), Thompson
patent: 3882048 (1975-05-01), Thelen et al.
patent: 4265834 (1981-05-01), Birkenstock et al.
patent: 4407733 (1983-10-01), Birkenstock et al.
patent: 4415479 (1983-11-01), Puskas et al.
patent: 4467110 (1984-08-01), Puskas et al.
patent: 4777303 (1988-10-01), Kitson et al.
patent: 5061671 (1991-10-01), Kitson et al.
Chemical Abstracts (25--Noncondensed Aromatics), vol. 78, 1973, p. 453; 124248s, Ger. Offen. 2,135,155.
Journal of Chemical Society, Chemical Communications, 1981, pp. 540-541.

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