Oxidation of glycerol using gold–palladium alloy-supported nanocrystals

Article (PDF Available)inPhysical Chemistry Chemical Physics 11(25):4952-61 · August 2009with25 Reads
DOI: 10.1039/b904317a · Source: PubMed
The use of bio-renewable resources for the generation of materials and chemicals continues to attract significant research attention. Glycerol, a by-product from biodiesel manufacture, is a highly functionalised renewable raw material, and in this paper the oxidation of glycerol in the presence of base using supported gold, palladium and gold-palladium alloys is described and discussed. Two supports, TiO(2) and carbon, and two preparation methods, wet impregnation and sol-immobilisation, are compared and contrasted. For the monometallic catalysts prepared by impregnation similar activities are observed for Au and Pd, but the carbon-supported monometallic catalysts are more active than those on TiO(2). Glycerate is the major product and lesser amounts of tartronate, glycolate, oxalate and formate are observed, suggesting a sequential oxidation pathway. Combining the gold and palladium as supported alloy nanocrystals leads to a significant enhancement in catalyst activity and the TiO(2)-supported catalysts are significantly more active for the impregnated catalysts. The use of a sol-immobilisation preparation method as compared to impregnation leads to the highest activity alloy catalysts and the origins of these activity trends are discussed.
www.rsc.org/pccp Volume 11 | Number 25 | 7 July 2009 | Pages 4913–5204
ISSN 1463-9076
Physical Chemistry Chemical Physics
Volume 11 | Number 25 | 2009 PCCP Pages 4913–5204
Skrabalak el al.
Ultrasound-assisted synthesis of carbon
Hutchings el al.
Oxidation of glycerol using gold
palladium alloy supported nanocrystals 1463-9076(2009)11:25;1-W
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www.rsc.org/pccp Volume9 | Number 33 | 7 September 2007 | Pages4609–4724
Physical Chemistry Chemical Physics An international journal
VanDoorslaer and Vinck
Thestrength of EPR and
ENDORtechniques in revealing
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Volume38 | Number 3 | 2009 Chem Soc Rev Themedissue: Nanoscale chirality Pages657–852
DavidK. Smith
Lostin translation? Chirality eects in
theself-assembly of nanostructured
C.C. Lee, C. Grenier, E.W. Meijer and
A.P.H. J. Schenning
Preparationand characterization of
helicalself-assembled nanobers
www.rsc.org/chemsocrev Volume38 | Number 3 | March2009 | Pages 657–852
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Themed issue:Nanoscale chirality
Guest editor: David Amabilino
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Launching 2009:
Nanoscale - a new journal publishing experimental and theoretical work across the breadth
of nanoscience and nanotechnology. www.rsc.org/nanoscale
Themed issue: Nanoscale chirality
Reviews include:
Visualization of synthetic helical polymers by high-resolution atomic force microscopy
Jiro Kumaki, Shin-ichiro Sakurai and Eiji Yashima
Preparation and characterization of helical self-assembled nanofibers
Cameron C. Lee, Christophe Grenier, E. W. Meijer and Albertus P. H. J. Schenning
Lost in translation? Chirality effects in the self-assembly of nanostructured gel-phase
David K. Smith
Chiral expression at metal surfaces: insights from surface science techniques
R. Raval
Redox-triggered chiroptical molecular switches
James W. Canary
The chromatographic separation of enantiomers through nanoscale design
Raquel Sancho and Cristina Minguillón
…This issue of Chemical Society
Reviews gives an overview of
the interest, importance, and
applications of asymmetric
chemical systems with features in
the nanometre regime.
Chirality in general is recognised widely as an area of great scienti c and commercial interest.
This themed issue contains reviews by experts who deal with everything from the theory of chiral
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date techniques to their use in separation of enantiomers and their behaviour as materials.
Guest editor
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