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Monolithic catalysts for hydrogenation of nitrobenzene to aniline: influence of aluminum suspension properties

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Abstract

Aluminum suspensions with different properties were prepared and characterized by UV–Vis spectra, BET, XRD and NH3-TPD. A layer of Al2O3 was coated onto the cordierite monolith by sol–gel method. Pd/Al2O3/cordierite monolith catalysts with the same Pd loading and particle size were prepared, and tested by nitrobenzene hydrogenation under solvent-free conditions. The adsorption of nitrobenzene on acid sites might be the primary effect under the reaction conditions, and a good linear relationship between hydrogenation rate and the acid content of the Al2O3 layer was observed. Furthermore, the stronger acid sites were responsible for the lower aniline selectivity.

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Authors and Affiliations

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning, China

    Baolei Du, Hongjiu Su & Shudong Wang

  2. Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China

    Baolei Du, Hongjiu Su & Shudong Wang

  3. University of Chinese Academy of Sciences, Beijing, 100039, China

    Baolei Du

Authors
  1. Baolei Du
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  2. Hongjiu Su
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  3. Shudong Wang
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Correspondence to Shudong Wang.

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Du, B., Su, H. & Wang, S. Monolithic catalysts for hydrogenation of nitrobenzene to aniline: influence of aluminum suspension properties. J Sol-Gel Sci Technol 73, 48–53 (2015). https://doi.org/10.1007/s10971-014-3493-3

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  • DOI: https://doi.org/10.1007/s10971-014-3493-3

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