CuO-沸石-活性炭-凹土复合脱硝催化剂的制备.pdf

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1、第37卷第5期非金属矿Vb1．37No．52014年9月Non．MetallicMinesSeptember，2014CuO一沸石．活性炭一凹土复合脱硝催化剂的制备杜卫刚蒋金龙‘石莹莹杨勇陈韬宇钱运华固旭陈静(1淮阴工学院生命科学与化学工程学院江苏省凹土资源利用重点实验室，江苏淮安223003；2盐城工学院江苏省生态环境材料重点建设实验室，江苏盐城224051)摘要稻壳经炭化、添加NaOH和NaAIO水热合成A型沸石．活性炭复合材料，加入凹凸棒石黏土(凹土)成型后采用浸渍法制备CuO．沸石．活性炭．凹土复合烟气脱硝催化剂(CuO．ZC

2、P)。采用XRD、SEM、N2吸附一脱附和NH3．TPD对材料进行了表征，考察了栽体类型、反应温度、CuO含量对催化剂脱硝性能的影响。结果显示，沸石一活性炭的引入提高了复合载体的孔隙以及对NH和NO的吸附，CuO．ZCP脱硝率高于凹土以及商品活性炭和凹土混合制备的脱硝催化剂的活性。催化剂脱硝率随CuO含量的增加而增加。反应温度越高。催化剂脱硝率越高，但温度过高(280℃)会导致活性炭氧化，最佳温度为250℃。关键词凹凸棒石黏土；沸石；活性炭；脱硝；催化剂中图分类号：TQ426．65文献标识码：A文章编号：1000-8098(2014)

3、05-0057-04JPreparationofCuO--Zeolite-ActivatedCarbon--PalygorskiteCompositeDenitrationCatalystDuWeigangJiangJinlong’ShiYingyingYangYongChenTaoyuQianYunhuaGuXuChenJing(1FacultyofLifeScience＆ChemicalEngineering，HuaiyinInstituteofTechnology,KeyLaboratoryforPalygorskiteScie

4、nceandAppliedTechnologyofJiangsuProvince，Huaian，Jiangsu223003；2KeyLaboratoryforEcological—EnvfonmentMaterialsofJiangsuProvince，YanchengInstituteofTech-nology,Yancheng，Jiangsu224051)AbstractZeoliteA—activatedcarboncomposite(zc、waspreparedfromcarbonizedricehuskbyhydrother

5、maltreatmentafteraddingNaOHandNaAIO2．CuO-zeolite-carbon-palygorskitecompositedenitrationcatalyst(CuO-ZCP)wasthensynthesizedaftermixingzeolite-carbon，palygorskiteandcoppernitratefollowedbycalcinationinnitrogen．ThesampleswerecharacterizedbyXRD，SEM，N2adsorption-desorptiona

6、ndNH3-TPD．Theefectsofthetypeofsupport，reactiontemperature，andCuOcontentonthecatalyticpropertiesofdenitrationcatalystwerealsoinvestigated．TheresultsindicatedthatZCcouldincreasetheporosityofthecompositesuppo~andadsorptioncapacitiesofCuO—ZCPforNH3andNO．TheNOconversionofCuO

7、—ZCPwashigherthanthatofCuO-palygorskitedenitrationcatalystandCuO—palygorskite—activatedcarboncompositedenitrationcatalyst．ThecatalyticpropertiesofCuO—ZCPincreasedwiththeCuOcontentandreactiontemperature．Activatedcarboninthecatalystcouldbeoxidizedathighreactiontemperature

8、(280℃、．Aproperreactiontemperaturewas250℃．Keywordspalygorskite；zeolite；activatedcarbon；denitrification；catalyst