Cyanide leaching of Au/CeO2: highly active gold clusters for 1,3-butadiene hydrogenation

Y. Guan, E.J.M. Hensen

Research output: Contribution to journalArticleAcademicpeer-review

37 Citations (Scopus)

Abstract

Ceria-supported gold catalysts before and after leaching by NaCN were investigated by X-ray absorption spectroscopy at the Au LIII edge. After gold leaching, isolated gold cations remain in close interaction with the support. These ions form an ideal precursor to very small clusters of a few gold atoms upon reduction. The resulting gold clusters exhibit a very high intrinsic activity in the hydrogenation of 1,3-butadiene, which is at least one order of magnitude higher than that of the nanometre-sized gold particles in the non-leached parent catalyst. These findings point to a very strong structure sensitivity of the gold-catalyzed hydrogenation of dienes.
Original languageEnglish
Pages (from-to)9578-9582
Number of pages4
JournalPhysical Chemistry Chemical Physics
Volume11
Issue number41
DOIs
Publication statusPublished - 2009

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Cyanides
cyanides
leaching
butadiene
Gold
Leaching
Hydrogenation
hydrogenation
gold
catalysts
Catalysts
X ray absorption spectroscopy
Cerium compounds
dienes
1,3-butadiene
Cations
absorption spectroscopy
Ions
cations
Atoms

Cite this

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abstract = "Ceria-supported gold catalysts before and after leaching by NaCN were investigated by X-ray absorption spectroscopy at the Au LIII edge. After gold leaching, isolated gold cations remain in close interaction with the support. These ions form an ideal precursor to very small clusters of a few gold atoms upon reduction. The resulting gold clusters exhibit a very high intrinsic activity in the hydrogenation of 1,3-butadiene, which is at least one order of magnitude higher than that of the nanometre-sized gold particles in the non-leached parent catalyst. These findings point to a very strong structure sensitivity of the gold-catalyzed hydrogenation of dienes.",
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Cyanide leaching of Au/CeO2: highly active gold clusters for 1,3-butadiene hydrogenation. / Guan, Y.; Hensen, E.J.M.

In: Physical Chemistry Chemical Physics, Vol. 11, No. 41, 2009, p. 9578-9582.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Cyanide leaching of Au/CeO2: highly active gold clusters for 1,3-butadiene hydrogenation

AU - Guan, Y.

AU - Hensen, E.J.M.

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AB - Ceria-supported gold catalysts before and after leaching by NaCN were investigated by X-ray absorption spectroscopy at the Au LIII edge. After gold leaching, isolated gold cations remain in close interaction with the support. These ions form an ideal precursor to very small clusters of a few gold atoms upon reduction. The resulting gold clusters exhibit a very high intrinsic activity in the hydrogenation of 1,3-butadiene, which is at least one order of magnitude higher than that of the nanometre-sized gold particles in the non-leached parent catalyst. These findings point to a very strong structure sensitivity of the gold-catalyzed hydrogenation of dienes.

U2 - 10.1039/b909487c

DO - 10.1039/b909487c

M3 - Article

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JO - Physical Chemistry Chemical Physics

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