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2014中国功能材料科技与产业高层论坛

作者： Minhong Xu Haifeng Chen Guoxiang Pan Peisong Tang Department of Materials Chemistry Huzhou University

A supported photocatalyst zinc phthalocyanine-calcium alginate gel beads(Zn-MPc-SA)was prepared through the mixture of water-solublezinc phthalocyanine(Zn-MPc)and sodium alginate was drip into 5%(w/v)CaCl *** Zn-MPc-SA was characterized by *** orange was selected as a substrate to investigate the photocatalytic activity of *** results shown that:the surplus of methyl orange was 22.05%at the condition of pH3,methyl orange 10mg/L 25mL,HO 50μL,Zn-MPcSA 0.1460g and visible light irradiation for ***-SAremains efficient in repetitive test cycles with no obvious degradation of catalytic *** process of photocatalytic oxidation decoloration of methyl orange keep well with the first order kinetic equation in the condition ofdifferent methyl orange concentration(5 mg/L to 30 mg/L)and differentamount of HO.

关键词： Zinc phthalocyanine sodium alginate gel beads methyl orange photocatalytic oxidation

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Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions

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Chinese Journal of Chemical Engineering 2018年第6期26卷 1370-1382页

作者： Gabriel Salierno Mauricio Maestri Stella Piovano Miryan Cassanello Maria Angelica Cardona Daniel Hojman Hector Somacal Laboratorio de Reactores y Sistemas para la lndustria-LARSl Dep. lndustrias FCEyN Universidad de Buenos Aires Int. GiJiraldes 2620 CI428BGA Buenos Aires Argentina Laboratorio de Diagnóstico por Radiaciones-LADiR Dep. de Fisica Experimental. Comision National de Energia Atomica (CNEA) San Martin Buenos Aires Argentina Universidad de San Martin San Martin Buenos Aires Argentina

Features of the motion of gel particles in a three-phase bubble column with non-foaming and foaming gas–liquid systems,determined by using experiments of radioactive particle tracking(RPT),have been *** tracer used is a gel particle which resembles typical immobilized *** tracer trajectory is analyzed to extract relevant information for design *** solid velocity field,turbulence parameters,dispersion coefficients,mixing times and flow transitions are determined and *** presence of foam significantly affects many quantified parameters,especially within the heterogeneous flow *** hydrodynamic stresses are reduced in the presence of foam,especially close to the *** dispersion coefficients also decrease,and the solid mixing time is only slightly affected by the presence of *** holdup,inferred both from RPT experiments and from gamma ray scanning,is higher for foaming systems and leads to a shift in the transition gas velocity towards higher values.

关键词： Bubble columns Solid motion gel beads Foaming Particle tracking Mixing

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