首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 234 毫秒
1.
本文提出了在N,N-二甲基甲酰胺(DMF)存在下,用萃取光度法研究了盐酸布比卡因与钴硫氰酸根络阴离子生成的离子缔合物的实验条件及反应机理,并用于实际样品的测定,获得了良好的效果。实验结果表明,由于DFM对二氯甲烷的协同作用,使反应体系较之单一溶剂萃取更稳定、更灵敏。  相似文献   

2.
铂对硫芴加氢脱硫钼催化剂的促进作用王军李文钊张盈珍THEPROMOTIONEFFECTOFPLATINUMONMOLYBDENUMCATALYSTFORHYDRODESULFURIZATIONOFDIBENZOTHIOPHENEWangJun,LiW...  相似文献   

3.
DECOMPOSITIONOFKNO3/γ┐Al2O3ANDTHEFORMATIONOFSURFACEBASESITES*TuMai,LiDatang,ZhuJianhua,ShenJianyi**(DepartmentofChemistry,Ins...  相似文献   

4.
DETERMINATIONOFTRACEFLUORIDEANDMOLYBDENUMINSERUMSAMPLEBYELECTROCHEMICALANALYSIS¥LiZengWANG;XiaoLiZHANG,YoagYU,CHENGSongMA(Dep...  相似文献   

5.
PARAMAGNETICANDDIAMAGNETICDICOPPER(Ⅱ)COMPLEXESWITHDI-SCHIFFBASEDERIVEDFROM2-HYDROXY-1-NAPHTHALDEHYDEAND1,3-DIANINO-2-PROPANOL...  相似文献   

6.
ENHANCEMENT OF EXCIMER FORMATION AND PHOTODIMERIZATIONON OF 9-ANTHRYLMETHYL DODECANOATE VIA AGGREGATIONENHANCEMENTOFEXCIMERFO...  相似文献   

7.
THE NON-TEMPLATE SYNTHESIS OF MACROCYCLIC SCHIFF BASE DERIVED FROM THIOPHENE,AND ITS Ag(Ⅰ),Hg(Ⅱ) COMPLEXESTHENON-TEMPLATESYNT...  相似文献   

8.
STRUCTURE OF GANODERIC ACID DM,A NEW TRITERPENOID FROM THE FRUITING BODY OF GANODERMA LUCIDUMHuiCAIandFangShengWANG(Universit...  相似文献   

9.
(E)-β,γ-UNSATURATEDNITRILESFROMDIMETHYLSULFONIUMCYANOMETHYLIDEAND9-ALKENYL-9-BORABICYCLO[3,3,1]NONANESNanShengLI;MinZhiDENG;Y...  相似文献   

10.
ANEWN-FORMYLC_(19)-DITERPENOIDALKALOID,ALDOHYPACONITINE,FROMCULTIVATEDACONITUMCARMICHAELI,DEBX.¥XianKaiWANG;TongFangZHAOandSh?..  相似文献   

11.
PROTEIN IMMOBILIZATION ON CHEMICALLY MODIFIED CELLULOSE MEMBRANE AND AFFINITY SEPARATION OF α-INTERFERONPROTEINIMMOBILIZATION...  相似文献   

12.
正丁醇在N,N-二甲基甲酰胺+水溶液中的体积性质   总被引:3,自引:0,他引:3  
测定了298。15K时正丁醇+N,N-二甲诺甲酰胺(DMF)+水三元系的密度求出正丁醇在DMF+水混合溶剂中的表观摩尔体积。观察2到:⑴Φ^0.E~fm与VDMF^E~fm之间存在相似变化关系,其中Φ2^0.E为正丁醇的过量无限稀释表观摩尔体积,VEMF^E为DMF+水二元系中DMF的过量偏摩尔体积,fm为混合溶剂中DMF的摩尔分数。⑵B1~fm与06212^0.E~fm之间存的反向变化关系。B1  相似文献   

13.
CYCLOPROPANATIONOFENAMINEANDETHYLDIAZOACETATECATALYZEDBYCOPPERCOMPLEX¥MInWANG,MingAnWANG,BingFangHU(DepartmentofAppliedChamis...  相似文献   

14.
SWINANINEC&D,TWONEWDITERPENEALKALOIDSFROMDELPHINIUMSWINANENSEVARLEPTOPOGONSWINANINEC&D,TWONEWDITERPENEALKALOIDSFROMDELPHINIUM...  相似文献   

15.
AMICROCALORIMETRICADSORPTIONSTUDYONSURFACEACIDITYANDBASICITYOFFe┐MgBINARYOXIDES*ShenJianyi,TuMai,ChenYi(DepartmentofChemistry...  相似文献   

16.
ANEWCHIRALSCHIFFBASEFAMILYDERIVEDFROM2,4-DIHYDROXYBENZALDEHYDEYanQingTIAN;YingYingZHAO;FengYuSU;XinYiTANG(DepartmentofChemist...  相似文献   

17.
ELECTRONTRANSFERAGENTDEPENDENCYOFMONOOXYGENATIONOFCYCLOHEXANECATALYZEDBYSILICAIMMOBILIZEDN,N'-BIS[2-(BENZIMIDAZOLYLMETHYL)]AM...  相似文献   

18.
STUDYONOXIDATIONSOFBENZILICETHERS,OXIMESAND1,2-DIOLSBYAMMONIUMCHLOROCHROMATE¥GuishengZHANG;JunQuanWANG;MiFengCHENG;KunCAI(Dep...  相似文献   

19.
POTASSIUM FLUORIDE ON ALUMINA CATALYZED ALDOL CONDENSATION OF INDENE AND ACETOPHENONEPOTASSIUMFLUORIDEONALUMINACATALYZEDALDOL...  相似文献   

20.
A NEW SAPONIN,HAINANEOSIDE A FROM MARSDENIA HAINANENSIS¥BaoXiaMA;TianZhengFANG(DepartmentofPharmacy,TongiinHospital,TongjiMed...  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号