AuRu/AC as an effective catalyst for hydrogenation reactions

Alberto Villa; Carine E. Chan-Thaw; Sebastiano Campisi; Claudia L. Bianchi; Di Wang; Paul G. Kotula; Christian Kübel; Laura Prati

doi:10.1039/c5cp00632e

AuRu/AC as an effective catalyst for hydrogenation reactions

Alberto Villa
, Carine E. Chan-Thaw
, Sebastiano Campisi
, Claudia L. Bianchi
, Di Wang
, Paul G. Kotula
, Christian Kübel
, Laura Prati

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

21 Scopus citations

Abstract

AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore-Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the surface. In the latter case, the unexpected Ru enrichment could be attributed to the weak adhesion of Ru on the carbon support, thus allowing Ru particles to diffuse on Au particles. Both structures result very active in catalysing the liquid phase hydrogenolysis of glycerol and levulinic acid but the activity, the selectivity and the stability depend on the structure of the bimetallic nanoparticles. Ru@Au/AC core-shell structure mostly behaved as the monometallic Ru, whereas the presence of bimetallic AuRu phase in Au@Ru/AC provides a great beneficial effect on both activity and stability.

Original language	English
Pages (from-to)	28171-28176
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	17
Issue number	42
DOIs	https://doi.org/10.1039/c5cp00632e
State	Published - Jan 1 2015
Externally published	Yes

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title = "AuRu/AC as an effective catalyst for hydrogenation reactions",

abstract = "AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore-Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the surface. In the latter case, the unexpected Ru enrichment could be attributed to the weak adhesion of Ru on the carbon support, thus allowing Ru particles to diffuse on Au particles. Both structures result very active in catalysing the liquid phase hydrogenolysis of glycerol and levulinic acid but the activity, the selectivity and the stability depend on the structure of the bimetallic nanoparticles. Ru@Au/AC core-shell structure mostly behaved as the monometallic Ru, whereas the presence of bimetallic AuRu phase in Au@Ru/AC provides a great beneficial effect on both activity and stability.",

author = "Alberto Villa and Chan-Thaw, \{Carine E.\} and Sebastiano Campisi and Bianchi, \{Claudia L.\} and Di Wang and Kotula, \{Paul G.\} and Christian K{\"u}bel and Laura Prati",

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doi = "10.1039/c5cp00632e",

language = "English",

volume = "17",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - AuRu/AC as an effective catalyst for hydrogenation reactions

AU - Villa, Alberto

AU - Chan-Thaw, Carine E.

AU - Campisi, Sebastiano

AU - Bianchi, Claudia L.

AU - Wang, Di

AU - Kotula, Paul G.

AU - Kübel, Christian

AU - Prati, Laura

PY - 2015/1/1

Y1 - 2015/1/1

N2 - AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore-Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the surface. In the latter case, the unexpected Ru enrichment could be attributed to the weak adhesion of Ru on the carbon support, thus allowing Ru particles to diffuse on Au particles. Both structures result very active in catalysing the liquid phase hydrogenolysis of glycerol and levulinic acid but the activity, the selectivity and the stability depend on the structure of the bimetallic nanoparticles. Ru@Au/AC core-shell structure mostly behaved as the monometallic Ru, whereas the presence of bimetallic AuRu phase in Au@Ru/AC provides a great beneficial effect on both activity and stability.

AB - AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore-Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the surface. In the latter case, the unexpected Ru enrichment could be attributed to the weak adhesion of Ru on the carbon support, thus allowing Ru particles to diffuse on Au particles. Both structures result very active in catalysing the liquid phase hydrogenolysis of glycerol and levulinic acid but the activity, the selectivity and the stability depend on the structure of the bimetallic nanoparticles. Ru@Au/AC core-shell structure mostly behaved as the monometallic Ru, whereas the presence of bimetallic AuRu phase in Au@Ru/AC provides a great beneficial effect on both activity and stability.

UR - https://www.scopus.com/pages/publications/84945260459

U2 - 10.1039/c5cp00632e

DO - 10.1039/c5cp00632e

M3 - Article

SN - 1463-9076

VL - 17

SP - 28171

EP - 28176

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 42

ER -

AuRu/AC as an effective catalyst for hydrogenation reactions

Abstract

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