|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
焙烧温度对pd-cu/凹凸棒土co常温催化氧化性能的影响
, PP. 597-602
Keywords: pd-cu/apt,凹凸棒土,焙烧温度,co常温催化氧化
Abstract:
？以凹凸棒土（apt）作载体，采用等体积浸渍法制备了pd-cu/apt催化剂，以co氧化为探针反应，在连续流动微反装置上，考察了焙烧温度对催化剂co常温催化氧化性能的影响。通过n2-物理吸附、xrd、tg、ft-ir和h2-tpr等手段对催化剂的结构和性质进行了表征。结果表明，随焙烧温度升高，pd-cu/apt中载体逐步脱水，进而引起催化剂结构和织构变化，其中，cu物种由cu（oh）cl逐渐向cuo转变，同时，高分散的pd物种与cu物种间相互作用先增强后减弱。经300℃焙烧的催化剂比表面积大，cu物种以cu（oh）cl形式存在，且具有良好的分散状态，与pd物种之间产生较强的相互作用，显著提高了其还原性能。在空速6000h-1、co体积分数0.5%、水蒸气体积分数3.3%的反应条件下，常温可将co完全转化800min以上。焙烧温度高于或低于300℃均引起co常温催化氧化性能的下降。
| [1] | satsumaa,osakik,yanagiharam,ohyamaoj,shimizuk.activitycontrollingfactorsforlow-temperatureoxidationofcooversupportedpdcatalysts[j].applcatalb:environ,2013,132-133:511-518.
|
| [2] | jonesc,taylorsh,burrowsa,crudacemj,kielycj,hutchingsgj.cobaltpromotedcoppermanganeseoxidecatalystsforambienttemperaturecarbonmonoxideoxidation[j].chemcommun,2008,14:1707-1709.
|
| [3] | zhuh,qinzf,shanwj,shenwj,wangjg.low-temperatureoxidationofcooverpd/ceo2-tio2catalystswithdifferentpretreatments[j].jcatal,2005,233(1):41-50.
|
| [4] | wangyz,zhaoyx,gaocg,liuds.originofthehighactivityandstabilityofco3o4inlow-temperaturecooxidation[j].catallett,2008,125(1/2):134-138.
|
| [5] | xiexw,liy,liuzq,harutam,shenwj.low-temperatureoxidationofcocatalysedbyco3o4nanorods[j].nature,2009,458:746-749.
|
| [6] | luomf,majm,lujq,songyp,wangyj.high-surfaceareacuo-ceo2catalystspreparedbyasurfactant-templatedmethodforlow-temperaturecooxidation[j].jcatal,2007,246(1):52-59.
|
| [7] | shenyx,lugz,guoy,wangyq.asynthesisofhigh-efficiencypd-cu-clx/al2o3catalystforlowtemperaturecooxidation[j].chemcommun,2010,46:8433-8435.
|
| [8] | choiki,vannicema.cooxidationoverpdandcucatalystsⅱ.unreducedbimetallicpdcl2-cucl2dispersedonal2o3orcarbon[j].jcatal,1991,127:489-511.
|
| [9] | wangl,zhouyb,liuqf,guoy,lugz.effectofsurfacepropertiesofactivatedcarbononcooxidationoversupportedwacker-typecatalysts[j].cataltoday,2010,153(3/4):184-188.
|
| [10] | fengyf,wangl,zhangyh,guoy,guoyl,lugz.deactivationmechanismofpdcl2-cucl2/al2o3catalystsforcooxidationattemperatures[j].chinjcatal,2013,34(5):923-931.
|
| [11] | shenyx,lugz,guoy,wangyq,guoyl,gongxq.studyonthecatalyticreactionmechanismoflowtemperatureoxidationofcooverpd-cu-clx/al2o3catalyst[j].cataltoday,2011,175(1):558-567.
|
| [12] | rakitskayatl,kioseta,oleksenkolp,lutsenkolv,dlubovskⅱrm,volkovavj.influenceofwatercontentinthepd(ⅱ)-cu(ⅱ)catalystfixedonacid-modifiedbasalttuffonitsactivityinthecarbonmonoxideoxidationbyoxygen[j].russjapplchem,2012,85(9):1339-1344.
|
| [13] | 陈丰,李霞章,陆晓旺,王健美,倪超英,陈志刚.凹凸棒石/ceo2复合纳米材料的合成、表征及催化性能[j].硅酸盐学报,2009,37(1):52-56.(chengfeng,lixia-zhang,luxiao-wang,wangjian-mei,nichao-ying,chenzhi-gang.preparationandcharacterizationofattapulgite/ceo2nano-compositematerialanditscatalyticperformance[j].journalofthechineseceramicsociety,2009,37(1):52-56.)
|
| [14] | 徐慧远,罗靖洁,严春蓉,张燕,尚书勇.二氧化硅孔结构对co氧化用担载型纳米金催化剂的影响[j].燃料化学学报,2012,40(11):1397-1402.(xuhui-yuan,luojing-jie,yanchun-rong,zhangyan,shangshu-yong.impactofsilicaporosityonthecatalyticactivityofnanosizegoldcatalystforcooxidation[j].journaloffuelchemistryandtechnology,2012,40(11):1397-1402.)
|
| [15] | 陈天虎,王健,庆承松,彭书传,宋垠先,郭燕.热处理对凹凸棒石结构、形貌和表面性质的影响[j].硅酸盐学报,2006,34(11):1406-1410.(chentian-hu,wangjian,qingcheng-song,pengshu-chuan,songyin-xian,guoyan.effecttoheattreatmentonstructure,morphologyandsurfacepropertiesofpalygorskite[j].journalofthechineseceramicsociety,2006,34(11):1406-1410.)
|
| [16] | qicx,suhj,guanrg,xuxf.aninvestigationintophosphate-dopedau/aluminaforlowtemperaturecooxidation[j].jphyschem,2012,116(33):17492-17500.
|
| [17] | lil,wangaq,qiaobt,linj,huangyq,wangxd,zhangt.originofthehighactivityofau/feoxforlow-temperaturecooxidation:directevidenceforaredoxmechanism[j].jcatal,2013,299:90-100.
|
| [18] | 王永钊,张卓,李凤梅,赵永祥.pd-cu/凹凸棒石黏土催化剂催化co氧化性能[j].工业催化,2011,11(19):75-79.(wangyong-zhao,zhangzhuo,lifeng-mei,zhaoyong-xiang.catalyticperformanceofpd-cu/attapulgiteclaycatalystforcooxidation[j].industrialcatalysis,2011,11(19):75-79.)
|
| [19] | yanghm,tangad,ouyangj,lim,manns.fromnaturalattapulgitetomesoporousmaterials:methodology,characterizationandstructuralevolution[j].jphyschemb,2010,114(7):2390-2398.
|
| [20] | youj,chenf,zhaoxb,chenzg.preparation,characterizationandcatalyticoxidationpropertyofceo2/cu2+-attapulgite(atp)nanocomposites[j].jrareearth,2010,28(9):347-352.
|
| [21] | caojl,shaogs,wangy,liuyp,yuanzy.cuocatalystssupportedonattapulgiteclayforlow-temperaturecooxidation[j].catalcommun,2008,9(15):2555-2559.
|
| [22] | 武应全,解红娟,寇永利,谭理,韩怡卓,谭猗生.焙烧温度对k-cu/zn/la/zro2催化剂上异丁醇合成的影响[j].燃料化学学报,2013,41(7):868-874.(wuying-quan,xiehong-juan,kouyong-li,tanli,hanyi-zhuo,tanyi-sheng.effectofcalcinationtemperatureonperformanceofk-cu/zn/la/zro2forisobutanolsynthesis[j].journaloffuelchemistryandtechnology,2013,41(7):868-874.)
|
| [23] | soaresosgp,órfãojjm,ruiz-marínezj,silvestre-alberoj,seplveda-escribanoa,pereiramfr.pd-cu/acandpt-cu/accatalystsfornitratereductionwithhydrogen:influenceofcalcinationandreductiontemperatures[j].chemengj,2010,165(1):578-88.
|
| [24] | 李娟,海航,闫常峰,胡蓉蓉,么志伟,罗伟民,郭常青,李文博.焙烧温度对二甲醚水蒸气重整制氢cu/zno/al2o3/cr2o3+h-zsm-5双功能催化剂性能的影响[j].燃料化学学报,2012,40(10):1240-1245.(lijuan,haihang,yanchang-feng,hurong-rong,yaozhi-wei,luowei-min,guochang-qing,liwen-bo.effectofcalcinationtemperatureonpropertiesofcu/zno/al2o3/cr2o3+h-zsm-5bi-functionalcatalystsforsteamreformingofdimethylether[j].journaloffuelchemistryandtechnology,2012,40(10):1240-1245.)
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
