Issue 42, 2015
From the journal:

Physical Chemistry Chemical Physics

AuRu/AC as an effective catalyst for hydrogenation reactions

Alberto Villa,a   Carine E. Chan-Thaw,a   Sebastiano Campisi,a   Claudia L. Bianchi,a   Di Wang,b   Paul G. Kotula,c   Christian Kübelb  and  Laura Prati*a  

* Corresponding authors

a Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
E-mail: Laura.Prati@unimi.it

b Institute of Nanotechnology and Karlsruhe Nano Micro Facility, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

c Materials Characterization Department, Sandia National Laboratories, Albuquerque, NM 87185-0886, USA

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.

Graphical abstract: AuRu/AC as an effective catalyst for hydrogenation reactions

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Article information

DOI
https://doi.org/10.1039/C5CP00632E
Article type
Paper
Submitted
31 Jan 2015
Accepted
20 Mar 2015
First published
23 Mar 2015
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2015,17, 28171-28176

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AuRu/AC as an effective catalyst for hydrogenation reactions

A. Villa, C. E. Chan-Thaw, S. Campisi, C. L. Bianchi, D. Wang, P. G. Kotula, C. Kübel and L. Prati, Phys. Chem. Chem. Phys., 2015, 17, 28171 DOI: 10.1039/C5CP00632E

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