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《Materials Review》 2014-16
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Preparation of the New Efficient Cu Catalyst Materials and Study on Its Catalytic Oxidation Performance

XU Junqiang;GUO Fang;LI Jun;LIU Qi;School of Chemistry &Chemical Engineering,Chongqing University of Technology;Chongqing Materials Research Institute Co.,Ltd.;  
The heterogeneous Cu/Al2O3 catalysts were prepared by the Micro-boiling refluxing impregnation method.For analyzing the material structure,texture parameters and apparent morphology,all catalysts were characterized by X-ray diffraction(XRD),N2physisorption(BET),and scanning electron microscope(SEM).The H2O2 was selected as oxidant,the Cu/Al2O3 materials were used as catalysts,and the methyl orange catalytic oxidation degradation reaction was selected for evaluation of catalyst reaction performance.Compared with the catalysts prepared by conventional wet impregnation,the catalysts prepared by the Micro-boiling refluxing were of the small particle size apparent morphology,high surface area and active components dispersion.Catalyst separation recycling is easy in this reaction system,which overcome the problem of catalyst difficult recycling in the Fenton reaction.The catalytic oxidation degradation process conditions were optimized as follows:mass ratio of H2O2 and Cu/Al2O3 was 2∶1,reaction temperature reached 70℃,catalyst grain size was between 0.3mm and 0.4mm,stirring speed was 900r/min.For the catalysts by the multiple impregnations,removal of methyl orange over this catalyst reached above 90%.It is 20%higher than the removal rate of methyl orange of conventional wet impregnation catalysts.The reaction apparent activation energy was calculated by Arrhenius equation,its value was 40.7kJ/mol.
【Fund】: 国家自然科学基金(21206202);; 重庆市科委自然科学基金(cstc2013jcyjA50002);; 重庆市科委科技攻关项目(CSTC 2011AC4124);; 重庆市高等学校青年骨干教师资助计划
【CateGory Index】: O643.36;O614.121
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