Hydrogenation/hydrogenolysis of disulfides using sulfided Ni/Mo catalysts

Leanne McLaughlin, Ekaterina Novakova, Robbie Burch, Christopher Hardacre

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The mechanism of the hydrogenation/hydrogenolysis of dinitrodiphenyldisulfides using sulfided NiMo/ gamma Al2O3 catalysts has been examined in detail. Although two routes are possible, the major pathway involves an initial S-S bond cleavage followed by reduction of the nitro group. Importantly, the disulfide hydrogenolysis occurs in the absence of the catalyst with the role of the catalyst thought to be to activate the hydrogen and trap the cleaved intermediate as well as facilitate the reduction of the nitro group. Monitoring the mass balance throughout the reaction demonstrates the difficulty in measuring intrinsic kinetics for gas-liquid-solid reactions. Although the mass balance is restored at the end of the reaction, up to 45% of the substrate/products is found to be adsorbed on the catalyst during the reaction. (c) 2008 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)162-168
Number of pages7
JournalAPPLIED CATALYSIS A-GENERAL
Volume340 (2)
Issue number2
DOIs
Publication statusPublished - 01 Jun 2008

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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