国际会议开场白.docx

国际会议开场白.docx

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国际会议开场白

国际会议开场白

国际会议口头报告ppt演讲内容准备模板

国际会议开场白第一篇

TheDraftofAcademicPresentation

国际会议的口头报告模板，每页ppt你需要讲什么东西需要分页详细写，尽量口语化，如下是本人参加比利时会议的模板，供大家参考。

P1

开场白：

Iamsohonoredtobewithyoutocommunicateacademicquestionsandideas.

Thetileofmyacademicpresentationis“Thepreparationandcatalyticperformanceofporoussilicananotubefunctionedwithheteroatoms”

Ishallonlytaketenminutesofyourtime.

Iwilltalkaboutthetopiconthepreparationofporousmaterials.

P2

Firstofall,iwannaintroducemyself.Icomefromnanjinguniversityoftechnology,nanjingcity,china.

P3

Thecontentislistedasfollows.

P4

Allourresearchesareconductedbytheacademicthoughts.Generallyspeaking,wearecommittedtoporousmaterials.Inordertoexplorehigh-performancefunctionalizedmaterialsforPilotexperimentsandscale-upproduction;wetunethestructure,suchascompositionandmorphologystepbystepandoptimizethemfurther.What’smore,thepossiblesynthesismechanismsarealsoinvestigated.Today,thepresentationisbasedontheright-handbranch.【国际会议开场白】

P5

Itisknownthatmesoporoussilicahaveexcellentcharactersasthecatalystcarrier,suchas……..

Butduetolackofactivesites,wehavetointroduceorganicorinorganicspeciesasactivesites.Andthecatalyticperformanceneedtobefurtherimproved.

P6

Asweknow,thethreefactorsincludingactivity,scaleanddiffusionfactorplaydecisiveroleinthecatalysis,affectingtheyield,selectivity,stabilitystrongly.Inourpresentation,wemainlyfocusontheinfluenceofscalefactoronthecatalysis.

P7

Duetolackofactivesitesformesoporoussilica,twomainmethods（surfaceloading,modifiedframework）arewidelyreported,bywhichvariousorganicorinorganicactivesitescanbeimmobilizedonthesurfaceorincorporatedintotheframeworkofmesopooussilica.

P8

Thoughvariousmorphologiesofmesoporossilicawerewidelysynthesized,thesynthesisofthemesoporossilica,withthreesimultaneouscharacteristicsincludingdopedmetal,mesoporousstructureandspecificmorphology,isalwaysachallenge,whichisrarelyreported.

Inotherwords,forourcaseexploringapropercondition,atwhichthesiliconandmetalsourcescansimultaneouslyhydrolyze,canensureadesiredmaterial.

P9

Next,let’slookatthesyntheticsteps.Firstly,….Then,….Afterthat,….Atlast,weobtainedthe

products.

P10

Inthiswork,bychangingthesynthesisconditions,suchas…,andsoon,thepuremesoporoussilicawithdifferentmorphologiesweresynthesized,includingnanosphere,nanorod,helix,capsuleandnanotube.Wewillfocusonthepreparationandcatalyticapplicationofmesoporoussilicawithnanotubemorphology.

P11

theSEMimagesofsamples:

A1,A2,A3areshowninthefigure.Itcanbeseenthatsamplea1isnanowire-likewithlengthofabout2μmanddiameterofabout100nm.Whentheamountof...is0.04g,themorphologyofsampleA2becametobeshortandthickrodsandthesizeisabout1μminlengthand400nmindiameter,respectively.Withfurtherincreasingtheamountof...,thesampleA3andA4turnedtobesphericalmorphology.ItalsocanbeseenthatthediametersofsamplesA3andA4aresubstantiallythesameabout450nm.However,thesphericalmorphologyofA4ismoreregularthanthatofA3.【国际会议开场白】

TheXRDpatternsshowedfourreflectionpeaksattributedto（100）,（110）,（200）and（210）,respectively,duetothehexagonalsructure.

P12

Then,wekeepthesameamountof...,increasingtheamountof....

Wefoundthatthelengthincreasedgradually.TheXRDpatternsalsoshowedthehexagonalsructureofsamplesB1,B2,B3,B4.

P13

Moreover,anadditionalproofofthehexagonalsymmetrystructureisgivenbyTEMandtheFTpattern.TheN2adsorption-desorptionisothermsofthesamplesB1,B2,B3,B4exhibitatypicaltype-IVisotherm.【国际会议开场白】

Accordingtothetableofstructuralparameters,wecanfindthatthespecificsurfaceareaandtotalporevolumeincreasegradually,thethicknessofwalldecreaseandthereisnoobviouschangeindiameter.

P14

Furthermore,thepossiblesynthesismechanismofthemesoporoussilicananotubeindualtemplatessystemwasproposed.Wesuggestthatduetoelectrostaticrepulsionbetweenpositivelychargedammoniumionsfromhydratedammoniamoleculesandhydrophilicgroupsof...,especiallyinammonia（NH3,25wt.%）solution,thehighconcentratedammoniumionsprovideacrowdedandrepulsivespacetopreventtheconjunctionof...molecules,leadingtotheformationoftherod-likemicellesastemplatetoformporestructureinsteadofsphere-likeones.Theroleofco-template...issuggestedtotunethelengthofrod-likemicellesbyarrangingitselfalongtheaxisofchannelwithPEOandPPOpartimmersedinthehydrophilicandthehydrophobicgroupofCTA+respectively.Asaresult,themesoporousnanotubewithdifferentlengthwillbesynthesized.However,thenon-polar...micellesarenotaffectedbypositivelychargedammonium.Whentheamountofco-templateincreasedfurther,thenon-polar...micellestendtocontrolthemorphologyofmicelleswhicharesequentiallyfromnanotube,shortrodtosphere-likeones.Itmybethereasonthatthenon-polar...micelleswouldprovidestrongerattractiveforcethantheelectrostaticrepulsionderivedfromthePEOblock,ammoniumionsandheadgroupof...,respectively.

P15

Inordertoinvestigatetheinfluenceofthemorphologyandstructureofmesoporoussilicaoncatalytic

performance,thesampleswithcopperincorporatedweresynthesized.

P16

ThefigureshowstheSEMandTEMimagesofsamplesa1,a2,a3,fromwhichwecanseetheyrepresentincrementallengthintherangeofabout0.5,1.0and1.5μm,andinsignificantchangeindiameteraround100nm.InXRDpatterns,therearealsofourreflectionpeaksforthesampleswithcopperincorprated,respectively,whichindicatestheincorporationoftheinorganiccoppersalthasnoobviouseffectonthehexagonalsructureandtheordereddegreeofporestructure.Moreover,thetrendsinlengthandthediameterofnanotubeareillustrated.

P17

TheN2adsorption-desorptionisothermsofthesamplesa1,a2,a3exhibitatypicaltype-IVisothermaccordingtotheIUPACclassificationandnohysteresisloopattherelativepressurerangeof0.2≤p/p0≤0.4,implyingthesamplesnotonlyhaveorderedmesoporousstructurebutalsotheuniformporesize.Moreover,theporediametersdidnotchangesignificantlyatdifferentweightratioof.../....Themostprobableporesizesofsamplesa1,a2,a3aredeterminedtobe2.71,2.50,2.44nm,respectively.Thestructuralparametersarelistedinfollowingtable.

P18

Thistablesummarizedthecatalyticactivityofcopper-modifiedporoussilicananotubeinthedirecthydroxylationofbenzenewithH2O2asoxidant.Thecatalystsshowedhighcatalyticactivity,anddirectproportionalrelationshipbetweenthebenzeneconversionandthelengthofthesilicananotube.ConsideringthesimilarcoppercontentdeterminedbyICP,thevariationsofcatalyticactivitieswereprobablycausedbydifferentretentiontimeofreagentinthenanotubewithdifferentlengths.P19

ItisSummaryandFutureResearch

Thispartofresearchcanbesummedupfromthefollowingthreeaspects.

Mophologycontrol,CatalyticactivityandFutureresearch

看thisslide.

P20

thanks

国际会议chairman主持词

国际会议开场白第二篇

TheFirstChinaUnconventionalGasSummit

Distinguishedguests,ladiesandgentlemen,

Goodmorning!

IamthechairwomanoftheChinaUnconventionalGasSummit.ItisagreatpleasureformetowelcomeyoutoBeijingtodiscussvariousaspectsofunconventionalgas.IhopethatthissummitwillprovideopportunityforacademicexchangeandcontributetothedevelopmentofunconventionalgasinChina.

NowIdeclaretheChinaUnconventionalGasSummitisopen!

Pleaseallowmetointroducetoday’sspeakers.TheyareYuanDandanandHuYing,whobothareprofessorsofChinaUniversityofPetroleum.Theywilljointlydeliveraspeechtitled“ProspectandDevelopmentofShaleGasinChina”.Let’swelcomethem.

ThanksprofessorYuanandProfessorHufortheirexcellentpresentation.Doyouhaveanyquestionsaboutit?

Anyotherquestion?

Thankyouagainforyourexcellentexplanation.

Okay,astimeislimited,Iamsorrytosaythatthissessionhastostophere.

Nowwecometotheendofthissummit.Onbehalfofallthemembersoftheorganizingcommittee,Iwishtoexpressoursinceregratitudetoallofyouwhohavesoactivelyparticipatedinthiscongresstomakeitsuchasuccess.

Andnow,IdeclaretheChinaUnconventionalGasSummitclosed.Thankyou!