Ontology type: schema:ScholarlyArticle
2010-07-31
AUTHORSJinLing He, TianBin Wu, BaoJi Hu, Yan Cheng, SuXiang Wu, Tao Jiang, BuXing Han
ABSTRACTBimetallic Au/Pd nanoparticles were prepared and used to catalyze oxidation of alcohols in the poly(ethylene glycol) (PEG)/CO2 biphasic system using O2 as the oxidant without adding any base. The catalytic activity of Au/Pd bimetal with different mole ratios was studied using benzyl alcohol as the substrate. It was found that bimetallic Au/Pd nanoparticles with Au:Pd=1:3.5 had higher catalytic activity than monometallic Au, Pd and the bimetallic Au/Pd nanoparticles with other molar ratios. The effect of CO2 pressure on the oxidation of benzyl alcohol and 1-phenylethanol in PEG/CO2 was investigated. It was demonstrated that CO2 pressure could be used to tune the conversion and selectivity of the reactions effectively. α,β,-Unsaturated alcohols were also studied and found to be more reactive than benzyl alcohol and 1-phenylethanol. Recycling experiments showed that the Au/Pd/PEG/CO2 catalytic system could be recycled at least four times without reducing the activity. In addition, the catalytic system is clean and the products can be separated easily. More... »
PAGES1592-1597
http://scigraph.springernature.com/pub.10.1007/s11426-010-4014-z
DOIhttp://dx.doi.org/10.1007/s11426-010-4014-z
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