Destruction of nitrated aromatics

Details Destruction of nitrated aromatics Destruction of nitrated aromatics

1984-06-29

1987-11-24

Kyle, Deborah L.

Liquid purification or separation

Processes

Chemical treatment

210758, 210909, C02F 172, C02F 176

Patent

active

047088060

ABSTRACT:
A process for destroying nitrated aromatics, e.g., the nitrophenol byproducts produced in the nitration of benzene to dinitrobenzene, is disclosed. The process involves treatment of an aqueous solution of the nitrated aromatics with iron and hydrochloric acid with or without ferric chloride using 0.2 to 7 molecular equivalents of finely divided iron based on the organic nitro groups present. The reaction is carried out at 0.degree. to 100.degree. C. and pH 1.5-3.

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CA 93:204174q, "Use of Activated Iron Powder as a Reducing Agent in Organic Reactions".
CA 88: 152,212a, "Semicontinuous Manufacture of Aromatic Amines".
Groggins, P. H., Unit Processes in Organic Synthesis, 5th Edition, McGraw-Hill Book Company, New York, New York, 1958, pp. 135-145.

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