Chemoselective nitroarene hydrogenation over Ni-Pd alloy supported on TiO2 prepared from ilmenite-type PdxNi1−xTiO3

Daniela González-Vera, Tatiana M. Bustamante, J. N.Díaz de León, Robinson Dinamarca, Ruddy Morales, Paula A. Osorio-Vargas, Cecilia C. Torres, Cristian H. Campos

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1 Citation (Scopus)

Abstract

Herein, we prepared TiO2 (rutile)-supported monometallic Ni and bimetallic Pd-Ni catalysts by thermal reduction of PdxNi1− xTiO3 (x = 0 and 0.045) and evaluated their performance for the chemoselective hydrogenation of nitrobenzene under optimized conditions. In contrast to Ni/TiO2, Pd-Ni/TiO2 featured a negligible loss of both conversion and aniline yield over five consecutive catalytic cycles, and instrumental analysis and catalytic activity evaluation revealed that this enhanced stability is due to Pd-Ni-alloy formation. Furthermore, Pd-Ni/TiO2 was used to prepare aromatic-amines used as building blocks for the production of important drugs precursors, achieving conversions of >98 % and a chemoselectivity of 99 % in the absence of undesired side-reactions.

Original languageEnglish
Article number101091
JournalMaterials Today Communications
Volume24
DOIs
Publication statusPublished - Sep 2020

Keywords

  • Catalyst stability
  • Nickel
  • Nitroarenes
  • Palladium
  • Supported catalyst

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Materials Chemistry

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