Selective heterogeneous catalytic hydrogenation of nitriles to primary amines in liquid phase. Part II: Hydrogenation of benzyl cyanide over palladium

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Abstract

A method for selective liquid-phase heterogeneous catalytic hydrogenation of nitriles to primary amines has been developed. Benzyl cyanide (BC) was hydrogenated under mild reaction conditions (40 °C, 6 bar), over a carbon supported palladium catalyst, in a mixture of two immiscible solvents (e.g. water/dichloromethane) and in the presence of an acidic additive (e.g. NaH2PO4). Complete conversion, but lower isolated yield (40%) and selectivity (45%) to primary amine could be achieved by using this process than in the hydrogenation of benzonitrile (BN) reported previously. A comparison concerning the reactivities and adsorption abilities of these substrates (BC and BN) was also made.

Original languageEnglish
Pages (from-to)40-45
Number of pages6
JournalApplied Catalysis A: General
Volume349
Issue number1-2
DOIs
Publication statusPublished - Oct 31 2008

Keywords

  • Benzyl cyanide
  • Palladium
  • Primary amine
  • Selective hydrogenation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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