METHOD OF INHIBITION OF ZEOLITE CATALYSTS Russian patent published in 1997 - IPC

Abstract RU 2095342 C1

FIELD: preparation of nitrobenzene feedstock for synthesis of aniline, quinoline, and azobenzene. SUBSTANCE: benzene is nitrated with 68-70 % nitric acid used in 80 % excess on repeatedly used aluminosilicates (beta and mordenite) under continuous conditions at 105-130 C. Partial distillation of water from reaction space may be carried out. Nitrobenzene yield is increased by 1.25-1.55 times; nitrobenzene recovery is increased from catalyst volume unit. EFFECT: increased amount of the desired product in catalysate. 2 cl, 1 tbl

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RU 2 095 342 C1

Authors

Bakhvalov O.V.

Ione K.G.

Dates

1997-11-10—Published

1995-04-04—Filed