学士学位论文题目：N-甲基-N-苄基吗啉离子液体的合成与表征姓名院系专业年级学号指导教师年月日N-甲基-N-苄基吗啉离子液体的合成与表征摘要：本文以N-甲基吗啉和苄基溴为原料合成溴代中间体，再分别与NaBF4、KPF6进行阴离子互换，合成其相应的BF4-及PF6-离子液体。通过核磁和元素分析对产物进行表征，并对其熔点、溶解性、电导率等物理性质进行测定。结果表明离子液体的结构与预期结构相符，得到的两种离子液体的熔点分别为113℃和128℃，且在一定条件下其电导率随温度的升高而增大，随浓度的增大而增大；所得[MBMO]BF4离子液体分别以水、DMF、乙腈为溶剂，20℃条件下溶液电导率大小顺序为：κ（水）＞κ（乙腈）＞κ（DMF）；[MBMO]PF6离子液体分别以丙酮、DMF、乙腈为溶剂，20℃条件下溶液的电导率大小顺序为：κ（丙酮）＞κ（乙腈）＞κ（DMF）；溶解性随溶剂的极性增强而增大。关键词：N-甲基吗啉；离子液体；合成；表征ThesynthesisandcharacterizationofN-methyl-N-benzylmorpholineionicliquidsKongXiangkun(SchoolofChemistryandMaterialsScienceLudongUniversityYantai264025)Abstract：Inthispaper，N-methyl-N-benzylmorpholinebromide([MBMO]Br)wassynthesizedfromN-methylmorpholineandBenzylbromide.Aftertheanionswereinterchangedbetween[MBMO]BrandNaBF4KPF6,[MBMO]BF4and[MBMO]PF6werepreparedrespectively.TheproductswereconfirmedbyHNMRandelementanalysis.Theirmeltingpoint,solubility,conductivityandotherphysicalpropertiesweredetermined.Theresultsshowedthatthestructureinaccordancewithexpectations.Undercertainconditions,itsconductivityincreaseswiththeincreasingoftemperatureandconcentration；Themeltingpointsofthetwokindsof[MBMO]BF4and[MBMO]PF6ionicliquidswere113℃and128℃respectively.Undercertainconditionstheirconductivitiesincreasewiththeadditionofthetemperatureandtheconcentration;at20℃,forwater,DMF,andacetonitrileassolvent,theorderoftheconductivityofBF4-ionicliquidsis:κ(water)>κ(acetonitrile)>κ(DMF);foracetone,DMFandacetonitrileassolvent,theorderoftheconductivityofPF6-ionicliquidsis:κ(Cketone)>κ(acetonitrile)>κ(DMF);thesolubilityenhancedwiththeadditionofthesolventpolarity.Keywords:N-methylmorpholine；Ionicliquids；Synthesis；Characterization目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc232954499"1引言PAGEREF_Toc232954499\h1HYPERLINK\l"_Toc232954500"1.1离子液体的特点和性能PAGEREF_Toc232954500\h1HYPERLINK\l"_Toc232954501"1.2离子液体的种类PAGEREF_Toc232954501\h2HYPERLINK\l"_Toc232954502"1.3离子液体的合成方法PAGEREF_Toc232954502\h2HYPERLINK\l"_Toc232954503"1.3.1直接合成法PAGE