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《水三元体系界面张力的耗散颗粒动力学模拟.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、物理化学学~(WuliHuaxueXuebao)JanuaryActaP.一Chim.Sin.,2011,27(1):65-7065[Article]Ⅵr、vW.whxb.pku.edu.caTritonX.100/甲苯,水三元体系界面张力的耗散颗粒动力学模拟靖波张健’吕鑫’朱珥琚’张风久姜伟。谭业邦l中海油研究总院海洋石油高效开发国家重点实验室,北京100027;中海石油(中国)有限公司,北京100010;中国海洋石油总公司,北京100010;山东大学化学与化工学院,济南250100)摘要:采用耗散颗粒动力学方法在介观层次上模拟了非离子表面活性剂Trito
2、nX一1O0在油/水界面上的分布行为,并把用于油,水二元体系界面张力的计算方法拓展到含表面活性剂的三元体系.利用该方法可以得到与实验数值吻合的界面张力数据.另外,模拟结果直观展示了表面活性剂界面张力与界面密度的关系,为表面活性剂复配增效理论提供了依据.该模拟方法给出的微观信息可以为驱油体系配方筛选和表面活性剂有效应用提供指导.关键词:耗散颗粒动力学:分子模拟:界面张力:表面活性剂:界面密度中图分类号:0648;O641:0643DissipativeParticleDynamicsSimulationofIntece"rensionintheTernaryT
3、ritonX-1O0/Toluene/H20SystemJlNGBo’,ZHANGJian’L0Xin’ZHUYue—Jun’ZHANGFeng-JiuJIANGWei。TANYe—Bang(StateKeyLaboratoryofOffshoreOilExploitation,ChinaNationalOffshoreOilCorporation(CNOOC)ResearchInstitute,Beijing100027,户R.China;CNOOCLimited,Beijing100010,PR.China,"CNOOC,Beijing100010,R.
4、China;SchoolofChemistryandChemicalEngineering,ShandongUniversity,Jinan250100,RChina、Abstract:TheassemblybehaviorofthenonionicsurfactantTritonX-100atthewater/oiIinterfacewasstudiedatthemesoscopiclevelusingadissipativeparticledynamicssimulation.Weextendedthecalculationmethodforinterf
5、acialtensionfromabinarywatefloilsystemtoaternarysystemwithsurfactants.1nparticular.thesimulatedresultsofintefaciaItensionthatwerechosenforiIlustrationarelnexcellentagreementwiththeexperimentalresults.Additionally,wediscusstherelationshipbetweenintefaciaItensionandinterfaciaIdensity
6、.whichsupportsthesynergistictheoryofmixedsurfactants.Themicroscopiclnformationobtainedfromthesimulatedmethodwillopensanotherdoorfortheselectionandapplicationofsurfactantsinenhancedoilrecovery.KeyWords:Dissipativeparticledynamics;Molecularsimulation;Interracialtension;Surfactant;Int
7、erfacialdensityReceived:September8,2010:Revised:September28,2010;PublishedonWeb:November19,201O.Correspondingauthor.Email:iingbo@cnooc.com.cn;Tel:+86—10—84526442.TheprojectwassupposedbytheNationalScienceandTechnologyMajorProjectofChina(2008ZX05024)andNationalHighTechnologyResearcha
8、ndDevelopmentProgramofChin
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