渣油飽和分紅外激光解吸-VUV光電離—高分辨質(zhì)譜研究.pdf

1、中國石油大學（華東）碩士學位論文渣油飽和分紅外激光解吸VUV光電離—高分辨質(zhì)譜研究姓名：畢玉成申請學位級別：碩士專業(yè)：無線電物理指導教師：郭文躍20090401AnalysisofmolecularstructuresforheavyoilssaturatesbyIRLaserDesorption／TunableVUVPhotoionizationhighresolutionMassSpectrometryBiYucheng(Radio

2、Physics)DirectedbyProfGuoWenyueAbstractAnewmethodusingsynchrotronradiation—highlyresolvedmassspectrometryhasbeensurveyedfortheanalysisofmolecularstructuresofheavyoilsTheseparationofdesorptionandionizationofheavyoils、析tht

3、hehelpofaIRlaserandasynchrotronradiationbeamrespectivelyfavorsanideal”soft”ionizationconditionfortheanalysisTheionsignalsaredifferentiatedbyahighlyresolvedtimeofflightmassspectrometry；andwimthetunabilityofthelightwavelen

4、gths，thephotoionizationefficiency(PIE)spectrumofeachmasspeaksisintegratedMeasurementofthePIEspectraofsomemodelmoleculessuggeststhatthismethodcallmeasuretheionizationenergyofmoleculesaccuratelyThemassspectraandPIEspectrao

5、fsaturatesfromLunguresidualoilsaremeasured，andwitllthehelpofquantumchemicalcalculations，somemolecularstructuresofthesaturatefractionsareassignedTheexperimenthasmeasuredthephotonionizationmassspectrometryoftheLunguresidue

6、snewbornsaturatesandthesecondarysaturatesatthedifferenthydrogen—addingreactionsconditionsThemolecularweightofresiduessaturatesmostlydistributesbetween210～400，anditismadeupofaseriesofdisciplinaryionpeakclusterswhosemassnu

7、mberdifferenceis14；eachclustercontainssomeofthemajorionpeaks，themassnumberdifferenceofadjacentpeaksis2TheprimarysaturatesmoleculesCanbeclassifiedthat：CnH2I盹、CnH2n、CnH2n2、CnH2n4、CnH躺、CnHEn8andCnH2n10Whenthesynchrotronradi

8、ationphotonenergyincreasestoastatedextenttheparentionrangenarrows，theintensityofgreatparentionweakens，someofthemdisappear，thestrongestpeakleanstothedirectionofsmallmass，andthatisduetothehigh—massparentioncrackingmoreeasi