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

doi:10.1016/j.jcat.2009.04.013

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

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

35 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 language	English
Pages (from-to)	80-88
Number of pages	9
Journal	Journal of Catalysis
Volume	265
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2009.04.013
Publication status	Published - 01 Jul 2009

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

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

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. ",

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journal = "Journal of Catalysis",

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publisher = "Academic Press Inc.",

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Deactivation and regeneration of ruthenium on silica in the liquid-phase hydrogenation of butan-2-one. / Manyar, Haresh; Weber, D.; Daly, Helen; Thompson, Jillian ; Rooney, David; Gladden, L.F.; Stitt, E.H.; Delgado, J.J.; Bernal, S.; Hardacre, Christopher.

In: Journal of Catalysis, Vol. 265, No. 1, 01.07.2009, p. 80-88.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Deactivation and regeneration of ruthenium on silica in the liquid-phase hydrogenation of butan-2-one

AU - Manyar, Haresh

AU - Weber, D.

AU - Daly, Helen

AU - Thompson, Jillian

AU - Rooney, David

AU - Gladden, L.F.

AU - Stitt, E.H.

AU - Delgado, J.J.

AU - Bernal, S.

AU - Hardacre, Christopher

PY - 2009/7/1

Y1 - 2009/7/1

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AB - 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.

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