Enhanced H2O2 production over Au-rich bimetallic Au–Pd nanoparticles on ordered mesoporous carbons

•AuPd on pre-treated ordered carbon show high H2O2 productivities and selectivities.•Encapsulation of AuPd NPs within the pore network lead to stable small particles.•Acid pre-treatment improve the metal dispersion and gold enrichment. The industrial implementation of hydrogen peroxide as a green ox...

Full description

Saved in:
Bibliographic Details
Published in:Catalysis today 2015-06, Vol.248, p.48-57
Main Authors: García, Tomás, Agouram, Said, Dejoz, Ana, Sánchez-Royo, Juan F., Torrente-Murciano, Laura, Solsona, Benjamín
Format: Article
Language:English
Subjects:
Acid treatment
AuPd alloys
CMK-3
Hydrogen peroxide
Nanoparticles
Ordered carbon
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•AuPd on pre-treated ordered carbon show high H2O2 productivities and selectivities.•Encapsulation of AuPd NPs within the pore network lead to stable small particles.•Acid pre-treatment improve the metal dispersion and gold enrichment. The industrial implementation of hydrogen peroxide as a green oxidant requires the development of efficient catalytic systems for its direct synthesis from molecular oxygen and hydrogen. Bimetallic Au–Pd nanoparticles supported on acid pre-treated ordered CMK-3 carbon catalysts show high H2O2 productivities and high H2 selectivities (>99%). Encapsulation of the nanoparticles within the pore network lead to stable small size (∼2nm) particles. This paper reveals that the acid pre-treatment, does not only improve the metal dispersion of metals but most importantly, it promotes their gold enrichment, dramatically decreasing the parallel H2O2 decomposition, which is key for the economic feasibility of the process.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2014.03.039