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One-step synthesis of N-methylaniline by hydroalkylation of nitrobenzene over oxide catalysts

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Abstract

The reaction of nitrobenzene hydroalkylation with methanol forming N-methylaniline as the main product has been studied. Alumina modified with copper and chromium compounds deposited by incipient wetness impregnation has been examined as the catalyst. It has been shown that the reductive alkylation of nitrobenzene with methanol is preferable to conduct at a temperature of 250°C, a feed weight hourly space velocity of 1 to 2 h−1, a methanol: nitrobenzene molar ratio of 3 to 4, and hydrogen: nitrobenzene molar ratio of 3–6. It has been found that promotion of the copper-containing catalyst with chromium leads to enhancement of the catalyst activity and facilitates an increase in selectivity for N-methylaniline.

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Authors and Affiliations

  1. Moscow State University, Moscow, Russia

    M. V. Belova, O. A. Ponomareva & I. I. Ivanova

  2. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia

    O. A. Ponomareva & I. I. Ivanova

Authors
  1. M. V. Belova
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  2. O. A. Ponomareva
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  3. I. I. Ivanova
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Correspondence to M. V. Belova.

Additional information

Original Russian Text © M.V. Belova, O.A. Ponomareva, I.I. Ivanova, 2014, published in Neftekhimiya, 2014, Vol. 54, No. 6, pp. 448–454.

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Belova, M.V., Ponomareva, O.A. & Ivanova, I.I. One-step synthesis of N-methylaniline by hydroalkylation of nitrobenzene over oxide catalysts. Pet. Chem. 54, 438–444 (2014). https://doi.org/10.1134/S0965544114060024

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  • DOI: https://doi.org/10.1134/S0965544114060024

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