Deactivation and regeneration of ruthenium on silica in the liquid-phase hydrogenation of butan-2-one

Haresh Manyar, D. Weber, Helen Daly, Jillian Thompson, David Rooney, L.F. Gladden, E.H. Stitt, J.J. Delgado, S. Bernal, Christopher Hardacre

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37 Citations (Scopus)

Abstract

A Ru/SiO2 catalyst was investigated for the liquid-phase hydrogenation of butan-2-one to butan-2-ol with water as a medium. Although excellent reactivity was observed, a gradual deactivation of the catalyst was found on recycle of the catalyst. The spent catalyst was characterized by using XRD, XPS, TEM, TPR, CO chemisorption, FTIR and ICP analyses. Formation of Ru(OH)(x) surface species is proposed to be the main cause of catalyst deactivation with no significant Ru leaching into the reaction mixture. Following catalyst regeneration, up to 85% of the initial catalytic activity could be recovered successfully. Moreover, adsorption of secondary aliphatic alcohols on the catalyst was found to significantly reduce the formation of Ru(OH)(x) during the reaction, thus protecting the catalyst from deactivation.
Original languageEnglish
Pages (from-to)80-88
Number of pages9
JournalJournal of Catalysis
Volume265
Issue number1
DOIs
Publication statusPublished - 01 Jul 2009

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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