METHOD OF SYNTHESIS OF ANILINE Russian patent published in 1999 - IPC

Abstract RU 2135461 C1

FIELD: petrochemical synthesis and technology. SUBSTANCE: invention relates to methods of synthesis of aniline by hydrogenization of nitrobenzene in the vapor phase. Invention proposes to hydrogenize nitrobenzene to aniline on the industrial oxide aluminium-copper-zinc-chrome catalysts DV-8-2 used for synthesis of methanol or NTK-4, NTK-4m, NTK-8 for low-temperature conversion of carbon oxide at 155-240 C under atmosphere pressure. Proposed method ensures near 100% of nitrobenzene conversion and 99.2-99.8% of aniline yield. Method eliminates the stage of preparing the special catalyst and carries out the process at lower temperature. Aniline is used for production of dyes, aniline-formaldehyde resins, pharmaceutical preparations, polyisocyanates, antidetonation addition agents to motor fuels and other substances of an organic synthesis. EFFECT: simplified technology, prolonged time of active work of catalyst without its regeneration. 2 cl, 5 ex

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RU 2 135 461 C1

Authors

Jakushkin M.I.

Starovojtov M.K.

Batrin Ju.D.

Golovachev V.A.

Kachegin A.F.

Fokin N.S.

Gajdin L.I.

Dontsov V.N.

Vodolazhskij S.V.

Kudrjashova T.Z.

Sveshnikova A.M.

Tikhanovskij V.I.

Kalinovskij A.I.

Dates

1999-08-27Published

1998-12-04Filed