Fe2O3/NGr@C- and Co–Co3O4/NGr@C-catalysed hydrogenation of nitroarenes under mild conditions

Dario Formenti; Christoph Topf; Kathrin Junge; Fabio Ragaini; Matthias Beller

doi:10.1039/C5CY01925G

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Fe₂O₃/NGr@C- and Co–Co₃O₄/NGr@C-catalysed hydrogenation of nitroarenes under mild conditions†

Dario Formenti,^ab Christoph Topf,^b Kathrin Junge,^b Fabio Ragaini^a and Matthias Beller*^b

Author affiliations

* Corresponding authors

^a Dipartimento di Chimica – Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy

^b Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert Einstein Straße 29a, 18059 Rostock, Germany
E-mail: matthias.beller@catalysis.de

Abstract

An improved hydrogenation of nitroarenes using nano-structured iron- and cobalt-based catalysts is presented. Modifications of the heterogeneous catalysts by N-doped graphene-flakes are crucial for the success of selective reductions. The use of polar solvents and basic additives has a significant positive influence on the rate of reduction of nitroarenes. This allows performing non-noble metal-catalysed hydrogenations under very mild reaction conditions (e.g. 70 °C and 20 bar). On the basis of the obtained catalytic results a heterolytic mechanism for the hydrogenation process is postulated, too.

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Article information

DOI: https://doi.org/10.1039/C5CY01925G
Article type: Paper
Submitted: 10 Nov 2015
Accepted: 28 Jan 2016
First published: 01 Feb 2016

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Catal. Sci. Technol., 2016,6, 4473-4477

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Fe₂O₃/NGr@C- and Co–Co₃O₄/NGr@C-catalysed hydrogenation of nitroarenes under mild conditions

D. Formenti, C. Topf, K. Junge, F. Ragaini and M. Beller, Catal. Sci. Technol., 2016, 6, 4473 DOI: 10.1039/C5CY01925G

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