hmpmo12审审nvno40sba审审15催化剂的制备及其催化性能研究-preparation and catalytic performance of hmp mo 12 trial nvno 40 sba trial 15 catalyst.docx

下载文档 降价啦

2
0
约4.93万字
约 61页
2018-05-29 发布于上海
举报
版权申诉
保障服务

hmpmo12审审nvno40sba审审15催化剂的制备及其催化性能研究-preparation and catalytic performance of hmp mo 12 trial nvno 40 sba trial 15 catalyst.docx

1、本文档共61页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

AbstractThemesoporousmolecularsieveSBA-15possessedmultipleadvantages,suchashighsurfacearea,orderedporestructure,tunableapertureandhighthermalstability,andsomedisadvantagesinweakacidicity,absenceofcrystallatticedefect,nooxidizability,thedisadvantageslimiteditsdevelopmentinindustry.Besides,Kegginmolybdovanadophosphoricacid,owingtoitsuniqueacid,redoxpropertiesandandcagestructuresthataresimilarwithliquidphase,itsdisadvantagesaffectedthecatalyticactivityforthepracticalproblem,suchasthesmallspecificsurface.UsingtheadvantagesofSBA-15andmolybdovanadophosphoricacid,theheteropolyacidsupportedonSBA-15toobtainheteropolyacidcatalystwithlargesurfaceareaandhighcatalyticactivity,aimimgtoeffectivelyovercomesuchfollowingdeficiencies,thatwas,smallsurfaceareaoftheHmPMo12-nVnO40catalystandlowcatalyticactivityoftheSBA-15.Inthisthesis,HmPMo12-nVnO40heteropolyacidwerefirstlyprepared,thentheHmPMo12-nVnO40/SBA-15byimpregnationandsol-gelmethodsweresuccessfullysynthesized.FinallythecatalyticactivityofHmPMo12-nVnO40/SBA-15onthehydroxylationreactionofbenzenewasexplored.HmPMo12-nVnO40withKegginstructurewaspreparedbyaetherextractionintheacidiccondition.ThesampleswerecharacteredbyXRD、FT-IR、UV-Vis、TG-DTA、H2-TPR.Thecharacterizationresultsshowedthatwhenthereactiontimewas60min,reactiontemperaturewas90℃andreactionpHwas2,theyieldofHmPMo12-nVnO40wasthehighest.FT-IR、UV-VisandXRDanalysisresultsshowedthatthestructureofHmPMo12-nVnO40wasKeggintype,TG-DTAandICPelementalanalysisdeterminedthatthemolecularformulaofHmPMo12-nVnO40,whichwereH4PMo11VO40?11H2O,H5PMo10V2O40?10H2OandH6PMo9V3O40?6H2O,respectively.HmPMo12-nVnO40/SBA-15weresynthesizedbyimpregnationandsol-gelmethods.Theas-synthesizedsampleswerealsocharacterizedbyXRD,N2adsorption-desorption,FT-IR,UV-Vis,TEMandH2-TPR.Itwasthatthesynthesizedmaterialshadanorderedtwo-dimensionalhexagonalmesostructureandtheKegginstructureofHmPMo12-nVnO40maintainedverywell.Furthermore,thesamplespreparedbythetwosyntheticmethodshaddifferentporesizes,porevolumesandspecificsurfaceareas