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1.
一类活性极高的高分子表面活性剂   总被引:11,自引:0,他引:11  
一类活性极高的高分子表面活性剂范仲勇,李娜,吴大诚(四川联合大学轻纺学院,成都,610065)ZhaohuiSu,S.L.Hsu(DepartmentofpolymerScience&Engineering,UniversityofMassachus...  相似文献   

2.
STUDYONSYNTHESIS,CHARACTERIZATIONANDCATALYSISOFPILLAREDANIONCLAY(Ⅲ)──SYNTHESISOFZnAl-BW_(11)O_(39)Z(H_2)~(n-)ThanksforthesupportofFoundationofCECandtheopenlabofHydrothermalSynthesisinJinnUniversityeddifferentkindsoftriheteropolyoxometalate(TH'POMs)totheZnAIlayeredclays,usingtheesterificationofn-butylalcoholandaceticacidasprobereaction.andfoundthatthepillaredcompoundsweremoreactiveandselectivethanthesolidacidcatalystssuchasacidicion-exchangeresinsl4].Onthebasisofpreviouswork.wenowencapsulatetriheteropolyoxome  相似文献   

3.
ThisinveshgationwassupportedbyTheNationalNaturalScienceFoundationofCllilla.geniusweret ̄ParentinUV,sothe2,4-etsand2,4tranS-isomerswereregardedasasingleconstituent(amixtUreof2-epimers)inanearlierreport.WesuccessfullyseattedisoaunonareticindiacetatestOtWoiSOmers,2,4ets-and2,4 ̄-isoannonareticindiacetatesbypreparativeTLCfromA.reticubo.OneOfthePair,2,4-ets-isoannonareticin,isanewnaturalproductandanother,2,4-tranS-isoannonarehcinisaknownbullatacinone.3ComPOundIwasobtainedcrystalline,mp.72-73"C.TheFAB-MSgavethePea  相似文献   

4.
1 INTRODUCTIONCurrently,consistenteffortshavebeenmadetotheinvestigationoforganicnonlinearoptical(NLO)materials〔1〕.Someofcinnamylideneacetophenonederivativeshavefairlystrongsecondharmonicgeneration(SHG)andthereforearepotentialusefulinNLOfields.Durin…  相似文献   

5.
化学文摘社和国际科技信息检索网   总被引:1,自引:0,他引:1  
化学文摘社和国际科技信息检索网张立群(美国化学文摘社,ChemicalAbstractsService,P.O.Box3012.ColumbusOH43210,USA)张曼平(青岛海洋大学化学系,266003)从1907年建立以来,化学文摘社(CAS...  相似文献   

6.
CharacterizationofOxygenSpeciesonMgO(100)SurfacebyXPSandSRPESJianWenDAandShiKongSHEN(ResearchInstituteofQiluPetrochemicalCo.,...  相似文献   

7.
StructureStudiesonNewTypesofMacrocyclicCompoundsPartV.CrystalStructureofNickel(II)Complexof5,12-Diphenyl-7,14-dimethyl-1,4,8,...  相似文献   

8.
据来自美国InstituteofScientificInformation(ISI)方面的消息,《科学通报》英文版,ChineseScienceBuletin(CSB),从1998年第1期起(Vol.43(1),1998),再次被收入ScienceC...  相似文献   

9.
TOwhomco ̄ndenCeshouldbeaddreSSedBothMSGLSandCDcontainhydronylgroupsonadjacentcanonatoms.IthasbeenknownthatpolyhydroxycompoundscanformironiccomplexeswithboraxIS].B}'addingboraxtothebuffercontainingor-CD,thesepboonofMSGLSti.asimproveddr ̄cally.asshowninFig.1.ImprovementofselectivitywaspresUmabl}.duetocomplexationoftheMSGLSwithboraxanda-CDinthesolution.OurobservationsshowedthattheconcentrationofboraxandthePHinthebaerarecriticalfactorsthechngtheresoluhonofMSGLS.DecreasingtheconcentrationOfboraxfrom100to50amoks.  相似文献   

10.
AStudyonMolybdeniteElectronicStructureLONGXiang-yunandWANGFeng-zhen(Dept.ofChem.,CentralSouthUniversityofTechnology,Changshah...  相似文献   

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