欢迎来到天天文库
浏览记录
ID:33346703
大小:749.84 KB
页数:6页
时间:2019-02-25
《脉冲放电协同负载型氧化物催化剂降解甲醛》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第9卷第10期环境工程学报Vol.9,No.102015年10月ChineseJournalofEnvironmentalEngineeringOct.2015脉冲放电协同负载型氧化物催化剂降解甲醛1,211,2111董冰岩黄尝伟江小华周海金施志勇兰水荣(1.江西理工大学资源与环境工程学院,江西赣州341000;2.江西省矿冶环境污染控制重点实验室,江西赣州341000)摘要以γ-Al2O3为载体,分别负载Cu、Mn和Ti3种不同活性成分制备了CuO/γ-Al2O3、MnO2/γ-Al2O3和TiO2/γ-Al2O3催化剂,采用SEM、XRD和EDS等技
2、术对催化剂进行了表征分析。在脉冲放电反应体系中放置所制备的催化剂对甲醛进行降解研究,了解催化剂催化性能,及其与脉冲放电的协同效应。实验结果表明,负载型催化剂与脉冲放电具有协同作用,能明显提高甲醛的降解率,且MnO2/γ-Al2O3与脉冲放电的协同效果明显好于CuO/γ-Al2O3、TiO2/γ-Al2O3。MnO2/γ-Al2O3催化剂中Mn的负载量、制备时的焙烧温度对催化剂的活性有明显影响,当Mn负载量为8%、焙烧温度为300℃时,制备的MnO2/γ-Al2O3催化剂性能最佳,在脉冲电压为24kV,脉冲频率为40Hz的条件下,甲醛去除率为97%。最后,
3、对脉冲放电协同MnO2/γ-Al2O3催化剂降解甲醛的机理进行了探讨。关键词脉冲放电负载型催化剂甲醛降解机理中图分类号文献标识码A文章编号1673-9108(2015)10-4947-06Degradationofformaldehydebypulsedischargecombinedwithsupportedoxidecatalyst1,211,2111DongBingyanHuangChangweiJiangXiaohuaZhouHaijinShiZhiyongLanShuirong(1.FaultyofResourcesandEnvironment
4、alEngineering,JiangxiUniversityofScience&Technology,GanZhou341000,China;2.KeyLaboratoryofEnvironmentalPollutionControlinJiangxiMiningandmentallurgy,GanZhou341000,China)AbstractCuO/γ-Al2O3,MnO2/γ-Al2O3andTiO2/γ-Al2O3catalystswerepreparedbythreedifferentkindsofactiveingredientsincl
5、udingCu,MnandTirespectivelysupportingontheγ-Al2O3carrier,andthecatalystswerecharacterizedbySEM,XRDandEDS.Thepreparedcatalystswereappliedtoresearchondegradationofformaldehydeinthepulsedischargereactionsystem,andtounderstandthecatalyticperformanceandthesyner-gisticeffectbetweencata
6、lystandpulsedischargebythisresearch.Theexperimentalresultsshowedthatsupportedcatalystwiththepulsedischargehadasynergisticeffect,couldsignificantlyimprovethedegradationrateofform-aldehyde,andMnO2/γ-Al2O3hadabetterperformancethanCuO/γ-Al2O3andTiO2/γ-Al2O3insynergisticeffectwithpuls
7、edischarge.TheloadingamountofMnandcalcinationtemperatureduringthepreparationofMnO2/r-Al2O3catalysthadobviouseffectoncatalystactivity.WhenMncontentwas8%,thecalcinationtemperaturewas300℃,MnO2/r-Al2O3catalystshowedthebestperformance,andwhenthepulsedischargevoltagewas24kV,pulsedischa
8、rgefrequencywas40Hz,theremovalrateofform
此文档下载收益归作者所有