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Design of highly selective platinum nanoparticle catalysts for the aerobic oxidation of KA-Oil using continuous-flow chemistry
Authors:
Arran M.
Gill
(University of Southampton)
,
Christopher
Hinde
(University of Southampton)
,
Rowan K.
Leary
(University of Cambridge)
,
Matthew
Potter
(University of Southampton)
,
Andrea
Jouve
(University of Southampton)
,
Peter
Wells
(University College London)
,
Paul A.
Midgley
(University of Cambridge)
,
John M.
Thomas
(University of Cambridge)
,
Robert
Raja
(University of Southampton)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Chemsuschem
State:
Published (Approved)
Published:
February 2016
Diamond Proposal Number(s):
8071
Abstract: Highly active and selective aerobic oxidation of KA-oil to cyclohexanone (precursor for adipic acid and ɛ-caprolactam) has been achieved in high yields using continuous-flow chemistry by utilizing uncapped noble-metal (Au, Pt & Pd) nanoparticle catalysts. These are prepared using a one-step in situ methodology, within three-dimensional porous molecular architectures, to afford robust heterogeneous catalysts. Detailed spectroscopic characterization of the nature of the active sites at the molecular level, coupled with aberration-corrected scanning transmission electron microscopy, reveals that the synthetic methodology and associated activation procedures play a vital role in regulating the morphology, shape and size of the metal nanoparticles. These active centers have a profound influence on the activation of molecular oxygen for selective catalytic oxidations.
Journal Keywords: aerobic oxidation; flow chemistry; heterogeneous catalysis; nanoparticles; selectivity
Subject Areas:
Chemistry,
Materials
Instruments:
B18-Core EXAFS
Added On:
05/02/2016 15:04
Discipline Tags:
Physical Chemistry
Catalysis
Chemistry
Materials Science
Nanoscience/Nanotechnology
Technical Tags:
Spectroscopy
X-ray Absorption Spectroscopy (XAS)
Extended X-ray Absorption Fine Structure (EXAFS)