Purification of mixtures of nitroaromatic compounds by removing

Details Purification of mixtures of nitroaromatic compounds by removing Purification of mixtures of nitroaromatic compounds by removing

1997-09-19

1999-02-23

O'Sullivan, Peter

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

Organic compounds

Oxygen containing

568705, 568706, 568708, 568711, 568712, 568713, 568927, 568932, 568935, C07C20116

Patent

active

058746544

ABSTRACT:
Environmentally-polluting nitrocresol values are removed from admixtures of nitroaromatic compounds comprised thereof, notably the media of nitration of aromatic compounds by reacting same with aqueous HNO.sub.3 /H.sub.2 SO.sub.4, by first intimately contacting such nitroaromatic compound admixtures with an oxidizing agent comprising hydrogen peroxide, javelle water, or mixture thereof, and thereafter with a neutralizing agent; the nitroaromatic aromatic compounds thus purified are conveniently catalytically hydrogenated into aromatic amines.

REFERENCES:
patent: 3894096 (1975-07-01), Whitten
patent: 3917719 (1975-11-01), Baldwin et al.
patent: 3980717 (1976-09-01), Subluskey
patent: 4482769 (1984-11-01), Toseland et al.
patent: 4604214 (1986-08-01), Carr et al.

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