Process for the manufacture of aromatic amines by gas-phase hydr

Details Process for the manufacture of aromatic amines by gas-phase hydr Process for the manufacture of aromatic amines by gas-phase hydr

1996-06-06

1997-10-21

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

C07C20936

Patent

active

056798580

ABSTRACT:
Aromatic amines are produced by catalytic hydrogenation of nitroaromatic compounds in the gas phase. The catalyst includes palladium and lead on graphite or on a graphite-containing coke support. From 30 to 6000 equivalents of hydrogen for each equivalent of nitro groups are contacted with the catalyst during this process.

REFERENCES:
patent: 3136818 (1964-06-01), Sperber et al.
patent: 3882048 (1975-05-01), Thelen et al.
patent: 4265834 (1981-05-01), Birkenstock et al.
patent: 5304525 (1994-04-01), Immel et al.

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