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

作者：Gill Arran M; Hinde Christopher S; Leary Rowan K; Potter Matthew E; Jouve Andrea; Wells Peter P; Midgley Paul A; Thomas John M; Raja Robert^*

来源：Chemsuschem, 2016, 9(5): 423-427.

DOI：10.1002/cssc.201501264

• aerobic oxidation
• flow chemistry
• heterogeneous catalysis
• nanoparticles
• selectivity

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.

• 出版日期2016-3-8