Journal
ACS CATALYSIS
Volume 5, Issue 6, Pages 3807-3816Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b00481
Keywords
nanoparticle; catalysis; vanillyl alcohol; structure-property correlations; aerobic oxidation; vanillin; EXAFS
Categories
Funding
- EPSRC [EP/K014706/1, EP/K014668/1, EP/K014854/1, EP/K014714/1]
- University of Southampton
- A*STAR, Singapore
- Science Foundation Ireland [08/CE/I1432]
- U.K. Catalysis Hub Consortium
- Engineering and Physical Sciences Research Council [EP/K014706/1, EP/K014714/1, EP/K014668/1, EP/K014854/1] Funding Source: researchfish
- EPSRC [EP/K014668/1, EP/K014714/1, EP/K014854/1, EP/K014706/1] Funding Source: UKRI
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A novel synthetic strategy for the design of metal nanoparticles by extrusion of anionic chloride precursors from a porous copper chlorophosphate framework has been devised for the sustainable aerobic oxidation of vanillyl alcohol (4-hydroxy-3-methoxybenzyl alcohol) to vanillin (4-hydroxy-3-methoxybenzaldehyde) using a one-step, base-free method. The precise nature of the Au, Pt, and Pd species has been elucidated for the as-synthesized and thermally activated analogues, which exhibit fascinating catalytic properties when subjected to diverse activation environments. By employing a combination of structural and spectroscopic characterization tools, it has been shown that analogous heat treatments have differing effects on extrusion of a particular metal species. The most active catalysts in this series of materials were the extruded Pt nanoparticles that were generated by reduction in H-2, which exhibit enhanced catalytic behavior, when compared to its Au or Pd counterparts, for industrially significant, aerobic oxidation reactions.
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