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Design of Highly Selective Platinum Nanoparticle Catalysts for the Aerobic Oxidation of KA-Oil using Continuous-Flow Chemistry

DOI: 10.1002/cssc.201501264 DOI Help

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 (UCL)) , 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

Instruments: B18-Core EXAFS

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