Design of highly selective platinum nanoparticle catalysts for the aerobic oxidation of KA-oil using continuous-flow chemistry

Abstract

Highly active and selective aerobic oxidation of KA-oil to cyclohexanone (precursor for adipic acid and -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 insitu 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.

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Identifiers

ORCID for Matthew Potter: orcid.org/0000-0001-9849-3306

ORCID for Peter Wells: orcid.org/0000-0002-0859-9172

ORCID for Robert Raja: orcid.org/0000-0002-4161-7053

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