Preparation and Self-Catalytic Property of Cu Nano-catalyst with Micelles of PS-b-P4VP

The micelles was firstly prepared by self-assembled poly(styrene)-block-poly(4-vinylpyridine)(PS-b-P4VP) in selective solution of ethylbenzene.The Cu2+ was inserted into the micelles core by complex of P4VP and Cu2+.Copper nanopartices were subsequently obtained by loading Cu nanoparticle onto micelles catalyst system through site reduction.The size of Cu nanoparticles in the micelle core is 2~3 nm by transmission electron microscope.Micelles-copper nanoparticles were applied in the catalytic oxidation of ethylbenzene to acetophenone with molecular oxygen as oxidant.The effects of various factors on the catalytic oxidation were studied,such as reaction temperature,reaction time.The catalyst desorption after reaction was researched.The experiment results show that PS-b-P4VP micelles attached by Cu nanoparticles catalyst have high catalytic activity.