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时间:2020-03-27
《聚酰亚胺绝缘粒子制备及对染料废水的电催化降解.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第42卷,第8期工程塑料应用V01.42,No-8,,12014年8月ENGINEERINGPLASTICSAPPLICATIONAug.2014—doi:lO.3969/j.issn.1001-3539.2014.08.005聚酰亚胺绝缘粒子制备及对染料废水的电催化降解蔡卫,陈玲玲,葛存旺,蔡再生,景晓辉(1.南通大学化学化工学院,江苏南通226019;2.东华大学化学化工与生物工程学院,上海201620)摘要:采用聚酰亚胺涂膜活性炭的方法制备了聚酰亚胺绝缘粒子。将聚酰亚胺绝缘粒子与粒子电极混合后构成三维电极反应器的床层填料,
2、应用到对染料废水的电催化降解实验。对绝缘粒子与活性炭体积比、聚酰亚胺绝缘粒子的耐酸碱性以及电催化降解操作条件如电解电压和电流密度等进行了探讨。结果表明,床层中绝缘粒子与活性炭粒子最佳体积为1/3。聚酰亚胺绝缘粒子电绝缘性能好、耐腐蚀性强、使用寿命长,能够均匀分布在粒子电极中,减小了短路电流,提高了电流效率和对染料废水的电解效率,为聚酰亚胺提供了一种新的应用。关键词:聚酰亚胺;绝缘粒子;三维电极;电催化降解中图分类号:TQ323.7文献标识码:A文章编号:1001—3539(2014)08-0021—05Preparationof
3、PolyimideInsulatingParticleandItsApplicationinElectrocatalyticDegradationofDyeWasteWaterCaiwei,ChenLingling,GeCunwang,CaiZaisheng,JingXiaohui(1.CollegeofChemistryandChemicalEngineering,NantongUniversity,Nantong226019,China;2.CollegeofChemis仃yandChemicalEngineering,Do
4、nghnaUniversity,Shanghai201620,China)Abstract:Polyimideinsulatingparticleswerepreparedbycoatingactivatedcarbonwithpolyimide.Theobtainedinsulatingparticlesweremixedwithparticleelectrodestoconstitutethepackinglayerinthreedimensionalelectrodereactorinwhichelectrocatalyt
5、icoxidationofdyewastewaterwascarriedout.Thevolumeratioofinsulatortoactivatedcarbon,acidandalkalineresistanceofthepolyimideinsulatingparticles,andoperationconditionsofelectrocatalyticoxidationsuchaselectrolysisvoltageandcurrentdensitywereinvestigated.Theresultsshowtha
6、ttheoptimumvolumeratioofactivatedcarbonparticlesandinsulatingparticlesofthepackinglayeris1/3,thepolyimideinsulatingparticleshaveexcellentelectricalinsulationproperty.strongantiacidandalkali,longperformancelife.Polyimideinsulatingparticlescanbedispersedinthepackinglay
7、erofthreedimensionalelectrodereactor,whichreducestheshortcircuitcurrent,improvethecurrenteficiencyandeficiencyofelectrocatalyticdegradation.Polyimideinsulatingparticlealsoprovidesanewapplicationforpolyimide.Keywords:polyimide;insulationparticle;threedimensionalelectr
8、ode;electrocatalyticoxidation三维电极电催化氧化是一种新型的高级氧化石墨等阻抗较小的材料作粒子电极时则必须加入绝技术,具有操作条件温和、无二次污染、产生的·OH缘粒子并按一定的体积比或质量比与粒子电极混合能将难降解有机污染物矿化等优点
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