Hydrogenation of p-Chloronitrobenzene over Nanostructured-Carbon-Supported Ruthenium Catalysts

Authors

  • Mustapha Oubenali,

    1. Laboratoire de Chimie de Coordination UPR CNRS 8241 composante ENSIACET, Université de Toulouse UPS-INP-LCC, 4 allée Emile Monso B.P. 44362, 31030 Toulouse Cedex 4 (France), Fax: (+33) 05 34 32 35 96
    2. Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Battouta, B.P. 1017, Rabat (Morocco)
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  • Giuditta Vanucci,

    1. Dipartimento di Chimica e Industriale, Università di Pisa, Via Risorgimento 35, 56100 Pisa (Italy)
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  • Dr. Bruno Machado,

    1. Laboratorio de Catalise e Materiais, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)
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  • Dr. Mohammed Kacimi,

    1. Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Battouta, B.P. 1017, Rabat (Morocco)
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  • Prof. Dr. Mahfoud Ziyad,

    1. Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Battouta, B.P. 1017, Rabat (Morocco)
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  • Dr. Joaquim Faria,

    1. Laboratorio de Catalise e Materiais, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)
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  • Dr. Anna Raspolli-Galetti,

    1. Dipartimento di Chimica e Industriale, Università di Pisa, Via Risorgimento 35, 56100 Pisa (Italy)
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  • Prof. Dr. Philippe Serp

    Corresponding author
    1. Laboratoire de Chimie de Coordination UPR CNRS 8241 composante ENSIACET, Université de Toulouse UPS-INP-LCC, 4 allée Emile Monso B.P. 44362, 31030 Toulouse Cedex 4 (France), Fax: (+33) 05 34 32 35 96
    • Laboratoire de Chimie de Coordination UPR CNRS 8241 composante ENSIACET, Université de Toulouse UPS-INP-LCC, 4 allée Emile Monso B.P. 44362, 31030 Toulouse Cedex 4 (France), Fax: (+33) 05 34 32 35 96
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Abstract

Carbon nanotubes (CNTs) and carbon nanofibers (CNFs) have been used for the first time to support ruthenium nanoparticles for the hydrogenation of p-chloronitrobenzene (p-CNB) to produce selectively p-chloroaniline. The preparation of well-dispersed ruthenium catalysts from the [Ru3(CO)12] precursor required activation of the purified supports by nitric acid oxidation. The supports, purified and functionalized, and the supported catalysts have been characterized by a range of techniques. The catalytic activity of these materials for the hydrogenation of p-CNB at 35 bar and 60 °C is shown to reach as high as 18 molp-CNB gRu−1 h−1, which is one order of magnitude higher than a commercial Ru/Al2O3 catalyst. Selectivities between 92 and 94 % are systematically obtained, the major byproduct being aniline.

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