Gas phase hydrogenation of m-dinitrobenzene over alumina supported Au and Au-Ni alloy

Fernando Cardenas-Lizana, Santiago Gomez-Quero, Mark A. Keane

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We report, for the first time, 100% selectivity in the continuous gas phase hydrogenation of m-dinitrobenzene to m-nitroaniline (m-NAN) over Au/Al 2O3. The synthesis and application of an alumina supported Au-Ni alloy is also described where alloy formation is demonstrated by XRD, diffuse reflectance UV-Vis and HRTEM analyses. Under the same reaction conditions, Au/Al2O3 delivered a higher (by close to an order of magnitude) hydrogenation rate compared with the alloy. Au-Ni/Al 2O3 promoted the formation of both m-NAN and m-phenylenediamine, i.e. partial and complete hydrogenation: the results are consistent with a stepwise reduction mechanism.

Original languageEnglish
Pages (from-to)25-32
Number of pages8
JournalCatalysis Letters
Volume127
Issue number1-2
DOIs
Publication statusPublished - Jan 2009

Keywords

  • Au-Ni/Al 2 O 3
  • Au/Al 2 O 3
  • M-dinitrobenzene
  • Selective hydrogenation
  • Supported alloy

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