2,4,6-三硝基苯酚改性锆镁复合氧化物固定相分离富勒烯的色谱性能研究  

Studies on Chromatographic Properties of 2,4,6-Trinitrophenol-Modified Zirconia-Magnesia Stationary Phase for the Separation of Fullerenes

作　　者：余琼卫[1] 施治国[1] 冯钰锜[1] 达世禄[1] 李烃[1] 

机构地区：[1]武汉大学化学系,湖北武汉430072

出　　处：《色谱》2005年第4期384-388,共5页Chinese Journal of Chromatography

基　　金：国家自然科学基金资助项目(No.20175039);教育部优秀青年教师资助计划.

摘　　要：制备了用于分离C60和C70的2,4,6-三硝基苯酚改性锆镁复合氧化物高效液相色谱固定相,并用元素分析仪、红外光谱仪和比表面积分析仪等对其进行了表征。考察了流动相中甲苯含量和柱温对C60和C70分离的影响。同时考察了以甲苯为流动相,在348K的柱温下,该固定相分离富勒烯混合物(含3%高富勒烯)的情况。结果表明,2,4,6-三硝基苯酚改性锆镁复合氧化物固定相对富勒烯有较强的保留,并表现出较强的温度关系,提高柱温能提高固定相对富勒烯的分离能力,并具有用于富勒烯制备分离的潜力。A stationary phase for the separation of C60 and C70 was prepared by modifying zirconia-magnesia composites with 2,4,6-trinitrophenol. The modified composite was characterized by using elemental analysis, diffused reflectance Fourier transform infrared spectroscopy and specific surface area. The effects of the toluene content in toluene-cyclohexane mobile phase and the column temperature on the separation of C60 and C70 were examined. Meanwhile, the separation of fullerenes including 3% high fullerenes was investigated at the temperature of 348K using pure toluene as the mobile phase. The results showed that the stationary phase of 2,4,6-trinitrophenol-modified zirconia-magnesia composite exhibits advantage in the separation of C60 and C70, and strong temperature dependence. The retention times of C60 and C70 and their separation factor on the stationary phase increase with the increase of the column temperature.The stationary phase is a potential packing material for separation of fullerenes in preparative scale.

关 键 词：2 4 6-三硝基苯酚 锆镁复合氧化物 固定相 高效液相色谱 富勒烯 

分 类 号：O658[理学—分析化学]