资源描述：
《以zro2-tio 2为载体的整体式锰基催化剂应用于低温nh3-scr反应》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、物理化学学报(WuliHuaxueXuebao)JulyActaPhys.鄄Chim.Sin.,2008,24(7)：1127-11311127[Communication]www.whxb.pku.edu.cn以ZrO2鄄TiO2为载体的整体式锰基催化剂应用于低温NH3鄄SCR反应鄢林涛张秋林李伟龚茂初幸怡汛陈耀强(四川大学绿色化学与技术教育部重点实验室,成都610064)摘要：以MnO2为活性组分,Fe2O3为助剂,制备了以TiO2及ZrO2鄄TiO2为载体的整体式催化剂.考察了它们在不同温度焙烧后应用于富氧条件下,NH3选择性
2、催化还原(NH3鄄SCR)氮氧化物的低温反应性能和高温稳定性.用X射线衍射(XRD)实验、比表面积测定(BET)、储氧性能测定(OSC)及程序升温还原(H2鄄TPR)等方法对催化剂进行了表征.结果表明,以ZrO2鄄TiO2为载体的催化剂具有很好的高温热稳定性,并具有较高的比表面积和储氧能力,同时具有较强的氧化能力.催化剂的活性测试结果表明,以ZrO2鄄TiO2为载体的整体式锰基催化剂明显地提高了NH3鄄SCR反应的低温活性,具有良好的应用前景.关键词：ZrO2鄄TiO2;低温NH3鄄SCR;NO;NH3;整体式催化剂中图分类号：O6
3、43MonolithManganese鄄BasedCatalystSupportedonZrO2鄄TiO2forNH3鄄SCRReactionatLowTemperature鄢LINTaoZHANGQiu鄄LinLIWeiGONGMao鄄ChuXINGYi鄄XunCHENYao鄄Qiang(KeyLaboratoryofGreenChemistry&TechnologyoftheMinistryofEducation,SichuanUniversity,Chengdu610064,P.R.China)Abstract：Monolit
4、hcatalystswerepreparedusingTiO2andZrO2鄄TiO2assupportswithMnO2asactivecomponentandFe2O3aspromoter.ThecatalyticactivitiesatlowtemperatureandstabilityathightemperatureforselectivecatalyticreductionofNOxwithNH3(NH3鄄SCR)inthepresenceofexcessiveO2werestudiedafterthecatalysts
5、calcinedatdifferenttemperatures.ThecatalystswerecharacterizedbyX鄄raydiffraction(XRD),specificsurfaceareameasurements(BET),oxygenstoragecapacity(OSC),andtemperatureprogrammedreduction(H2鄄TPR).TheresultsindicatedthatthecatalystsupportedonZrO2鄄TiO2hadexcellentstabilityath
6、ightemperature,andpossessedhighspecificsurfaceareaandoxygenstoragecapacity,andhadstrongredoxproperty.Theresultsofthecatalyticactivitiesindicatedthatthemonolithmanganese鄄basedcatalystusingZrO2鄄TiO2assupporthadevidentlyimprovedtheactivityofNH3鄄SCRreactionatlowtemperature
7、,anditshowedgreatpotentialforpracticalapplication.KeyWords：ZrO2鄄TiO2;Low鄄temperatureNH3鄄SCR;NO;NH3;MonolithcatalystNowadays,theselectivecatalyticreduction(SCR)ofNOxwithstationarysources.Therefore,thereisincreasinginterestinde-NH3inthepresenceofexcessiveO2hasgenerallybe
8、enrecog-velopinglow鄄temperaturecatalystscapableofworkingdown-nizedasthemosteffectiveandwidelycommercializedremovalstr
