作　　者： ; ; ; ;

机构地区： 中国科学院过程工程研究所多相复杂系统国家重点实验室

出　　处： 《过程工程学报》 2010年第4期788-794,共7页

摘　　要： 合成了4种1-甲基-3-烷基咪唑四氯化铁盐[C_nmim]FeCl_4(n=2,4,6,8)及3种1-甲基-3-丁基咪唑四卤化铁([C_4mim]FeX_4,X=Cl,Br)磁性离子液体,光谱结果表明,[C_nmim]FeCl_4及[C_4mim]FeBr_4中阴离子单一,而[C_4mim]FeClBr_3及[C_4mim]FeCl_3Br中的阴离子为FeBr_4^-,FeBr_3Cl^-,FeCl_2Br_2^-,FeCl_3Br^-,FeCl_4^-的混合物.测定了其密度、粘度、电导率,磁性离子液体密度较大,25℃时为1.25~1.94g/cm^3;粘度较小,25℃时为21~65mPa·s;电导率较大,30℃时为0.23~1.37S/m.并研究了其物性随温度及结构的变化规律. Seven magnetic ionic liquids of 1-methyl-3-alkylimidazolium tetrachloroferrate [C_nmim]FeCl_4（n=2,4,6,8） and 1-methyl-3-butylimidazolium tetrahalogenoferrate [C_4mim]FeX_4（X=Cl,Br） were synthesized and verified with ~1H-NMR,Raman and MS spectra.[C_nmim]FeCl_4 and [C_4mim]FeBr_4 had single anions,but [C_4mim]FeClBr_3 and [C_4mim]FeCl_3Br had multi-anions,including FeBr_4^-,FeBr_3Cl^-,FeCl_2Br_2^-,FeCl_3Br^-,FeCl_4^-.The density,viscosity and conductivity of magnetic ionic liquids were measured.It was found that their densities were bigger than those of traditional ionic liquids,1.25~1.94 g/cm^3 at 25℃;viscosities were lower,21~65 mPa·s at 25℃;conductivities were higher,0.23~1.37 S/m at 30℃.The influences of temperature and structure of cations and anions on the above properties were extensively investigated.

关 键 词： 磁性离子液体 结构 密度 粘度 电导率

领　　域： [理学] [理学]