|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
不同形貌zsm-5分子筛的制备及其催化甲醇转化制烯烃性能
, PP. 747-753
Keywords: zsm-5,合成,形貌,mtp,性能评价
Abstract:
？采用廉价的原料,通过添加尿素及调节碱度,在水热条件下合成了具有不同形貌的zsm-5分子筛。研究了分子筛形貌对甲醇转化制丙烯催化性能的影响。结果表明,通过控制尿素含量及碱度,可以对zsm-5分子筛晶体的生长方向及形貌进行调控。当urea/sio2(molratio)=0.28,na2o/sio2(molratio)=0.035时,所得到的分子筛沿b轴方向生长最慢,产品形貌呈薄片状,厚度为130nm;在一定范围内提高碱度,会使分子筛形貌逐渐变为纳米颗粒聚集体。icp、nh3-tpd和n2吸附表征结果表明,所合成的分子筛sio2/al2o3物质的量比、酸性质及孔道性质接近。催化反应评价结果表明,薄片状样品hz-1由于在b轴方向上具有更短的扩散路径,且结晶度高,在催化甲醇转化反应中不仅表现出良好的选择性,双烯(乙烯+丙烯)收率可达60%以上;p/e比(丙烯/乙烯)最高可达8.4,在连续反应200h后,甲醇转化率仍保持在95%以上,表现出优异的催化稳定性。
| [1] | olsondh,kokotailogt,lawtonsl,melerwm.crystalstructureandstructure-relatedpropertiesofzsm-5[j].jphyschem,1981,85(15):2238-2243.
|
| [2] | reddyjk,motokurak,koyamat,miyajia,babat.effectofmorphologyandparticlesizeofzsm-5oncatalyticperformanceforethyleneconversionandheptanecracking[j].jcatal,2012,289:53-61
|
| [3] | mirthg,?ejkaj,lercherja.transportandisomerizationofxylenesoverhzsm-5zeolites[j].jcatal,1993,139(1):24-33.
|
| [4] | lets,levmr.preparationoffluorinated-desilicatedzsm-5zeoliteswithhighsurfaceacidityproperties[j].microporousmesoporousmater,2000,34(1):93-97.
|
| [5] | mokranit,scurrellm.gasconversiontoliquidfuelsandchemicals:themethanolroute-catalysisandprocessesdevelopment[j].catalrev,2009,51(1):1-145.
|
| [6] | kumarr,ratnasamyp.isomerizationandformationofxylenesoverzsm-22andzsm-23zeolites[j].jcatal,1989,116(2):440-448.
|
| [7] | briscoena,johnsondw,shannonmd,kokotailogt,mccuskerlb.theframeworktopologyofzeoliteeu-1[j].zeolites,1988,8(1):74-76.
|
| [8] | boxit,puchem,camblorma,cormaa.syntheticporouscrystallinematerialitq-13,itssynthesisanduse:us,6471941b1[p].2002-10-29.
|
| [9] | firoozim,baghalham,asadim.theeffectofmicroandnanoparticlesizesofh-zsm-5ontheselectivityofmtpreaction[j].catalcommun,2009,10(12):1582-1585.
|
| [10] | najd,liugz,zhouty,dinggc,husl,wangl.synthesisandcatalyticperformanceofzsm-5/mcm-41zeoliteswithvaryingmesoporesizebysurfactant-directedrecrystallization[j].catallett,2013,143(3):267-275.
|
| [11] | 张卿,张兰兰,胡思,雍晓静,阿古达木,巩雁军,窦涛.不同铝源合成zsm-5分子筛及其mtp催化性能[j].石油学报(石油加工),2012,28:39-42.(zhangqing,zhanglan-lan,husi,yongxiao-jing,agudamu,gongyan-jun,doutao.effectofaluminumsourcesonthesynthesisofzsm-5andtheircatalyticpropertiesformtpreaction[j].actapetsin(petprocesssect),2012,28:39-42.)
|
| [12] | caroj,noackm,richter-mendauj,marlowf,petersohnd,griepentrogm,kornatowskij.selectivesorptionuptakekineticsofn-hexaneonzsm-5-anewmethodformeasuringanisotropicdiffusivities[j].jphyschem,1993,97(51):13685-13690.
|
| [13] | gueudrél,chmelikc,kärgerj.diffusionanisotropyinasinglecrystalofsilicalite-1studiedbyinterferencemicroscopy[j].diffusion-fundamentals.org,2011,16(45):1,2.
|
| [14] | teketels,skistadw,benards,olsbyeu,lillerudkp,beatop,svelles.shapeselectivityintheconversionofmethanoltohydrocarbons:thecatalyticperformanceofone-dimensional10-ringzeolites:zsm-22,zsm-23,zsm-48,andeu-1[j].acscatal,2012,2(1):26-37.
|
| [15] | blekenfl,janssenstonvw,svelles,olsbyeu.productyieldinmethanolconversionoverzsm-5ispredominantlyindependentofcokecontent[j].microporousmesoporousmater,2012,164:190-198.
|
| [16] | svelles,visurm,olsbyeu,saepurahman,bjørgenm.mechanisticaspectsofthezeolitecatalyzedmethylationofalkenesandaromaticswithmethanol:areview[j].topcatal,2011,54(13/15):897-906.
|
| [17] | hawjf,songw,marcusdm,nicholasjb.themechanismofmethanoltohydrocarboncatalysis[j].accchemres,2003,36(5):317-326.
|
| [18] | sunxy,muellers,liuy,shih,hallergl,sanchez-sanchezm,vanveenac,lercherja.onreactionpathwaysintheconversionofmethanoltohydrocarbonsonhzsm-5[j].jcatal,2014,317:185-197.
|
| [19] | olsbyeu,svelles,bjørgenm,beatop,janssenstonvw,joensenf,bordigas,lillerudkp.conversionofmethanoltohydrocarbons:howzeolitecavityandporesizecontrolsproductselectivity[j].angewcheminted,2012,51:5810-5831.
|
| [20] | blekenb-tl,wraggds,arstadb,gunnsae,mouzonj,helvegs,lundegaardlf,beatop,bordigas,olsbyeu,svelles,lillerudkp.unitcellthicknanosheetsofzeoliteh-zsm-5:structureandactivity[j].topcatal,2013,56(9/10):558-566.
|
| [21] | bjørgenm,joensenf,holmms,olsbyeu,lillerudk-p,svelles.methanoltogasolineoverzeoliteh-zsm-5:improvedcatalystperformancebytreatmentwithnaoh[j].applcatala:gen,2008,345(1):43-50.
|
| [22] | apelianmr,fletcherdl,sarlims,shihss.hydrocarbonupgradingprocess:us,5308471a[p].1994-03-03.
|
| [23] | 温鹏宇,梅长松,刘红星,杨为民,陈庆玲.甲醇分压和zsm-5晶粒大小对甲醇制丙烯的影响[j].化学反应工程与工艺,2007,23(6):481-486.(wenpeng-yu,meichang-song,liuhong-xing,yangwei-min,chenqing-ling.influenceofmethanolpartialpressureandzsm-5particlesizeondistributionofproductsformethanolconversiontopropylene[j].chemreactengtechnol,2007,23(6):481-486.)
|
| [24] | möllerkp,böhringerw,schnitzlerae,steenev,o’connorct.theuseofajetloopreactortostudytheeffectofcrystalsizeandtheco-feedingofolefinsandwaterontheconversionofmethanoloverhzsm-5[j].microporousmesoporousmater,1999,29(1/2):127-144.
|
| [25] | choim,nak,kimj,sakamotoy,terasakio,ryoor.stablesingle-unit-cellnanosheetsofzeolitemfiasactiveandlong-livedcatalysts[j].nature,2009,461:246-249.
|
| [26] | 刘艳.若干重要的工业沸石分子筛晶体形貌调控[d].浙江:浙江大学,2014.(liuyan.themorphologycontrolofseveralimportantindustrialzeolitecrystalsandtheircatalyticproperties[d].zhejiang:zhejianguniversity,2014.)
|
| [27] | chaokj,tasitc,chenms.kineticstudiesontheformationofzeolitezsm-5[j].jchemsoc,faradaytrans1,1981,77:547-551.
|
| [28] | patcasfc.themethanol-to-olefinsconversionoverzeolite-coatedceramicfoams[j].jcatal,2005,231:194-200.
|
| [29] | shanzc,wangh,mengxj,liusy,wangl,wangcy,lif,lewisjp,xiaofs.designedsynthesisofts-1crystalswithcontrollableb-orientedlength[j].chemcommun,2011,47(3):1048-1050.
|
| [30] | bjørgenm,svelles,joensenf,nerlovj,kolboes,boninof,palumbol,bordigas,olsbyeu.conversionofmethanoltohydrocarbonsoverzeoliteh-zsm-5:ontheoriginoftheolenicspecies[j].jcatal,2007,249:195-207.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
