Authors: Xiangrui Wang Hanmin Yang Bo Feng Zhenshan Hou Yu Hu Yunxiang Qiao Huan Li Xiuge Zhao
Publish Date: 2009/06/10
Volume: 132, Issue: 1-2, Pages: 34-40
Abstract
The functionalized Polyethylene glycol PEGstabilized Pd0 nanoparticles have been utilized to selectively oxidize alcohols to the corresponding aldehydes or ketones in supercritical carbon dioxide scCO2/PEG PEG2000 biphasic system It was demonstrated that the Pd0 nanocatalyst was more active and selective in comparison with the commercially available Pd/C catalyst PVPstabilized Pd nanocatalyst and Pd0 catalyst without stabilization The effects of CO2 pressure reaction time and temperature on activity and selectivity were also further investigated in detail The scCO2/PEG biphasic system was proved to be not only cheap and clean but also recyclable for the aerobic oxidation of alcoholsThe authors are grateful for the support from the National Natural Science Foundation of China no 20773037 ECUST no YJ0142136 the Commission of Science and Technology of Shanghai Municipality no 07PJ14023 China and Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission Ministry of Education Hubei Province SouthCentral University for Nationalities no CHCL08001 PR China The authors would also like to express their thanks to Prof Walter Leitner’s helpful suggestion and Dr Nils Theyssen’s assistance
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