芘基丁酸改性锆-镁复合氧化物HPLC固定相的制备及其在分离富勒烯中的应用  

Preparation of Pyrenebutyric Acid-modified Zirconia-Magnesia Stationary Phase for High Performance Liquid Chromatography and Its Application to the Separation of Fullerenes

作　　者：余琼卫[1] 施治国[1] 达世禄[1] 冯钰锜[1] 

机构地区：[1]武汉大学化学与分子科学学院,武汉430072

出　　处：《高等学校化学学报》2005年第7期1237-1241,M004,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20475040);教育部优秀青年教师资助计划资助

摘　　要：制备了用于分离C60和C70的芘基丁酸改性锆-镁复合氧化物高效液相色谱固定相,并对其进行了表征;考察了流动相中甲苯含量、柱温和进样量对C60和C70分离的影响.结果表明,芘基丁酸改性锆-镁复合氧化物固定相对富勒烯有较强的保留,并对富勒烯表现出较强的分离能力,具有制备分离富勒烯的潜力.The zirconia-magnesia composites were modified with pyrenebutyric acid and were used as π-basic stationary phases for the separation of C_-{60-} and C_-{70-}. The influence of the mobile phase(toluene-cyclohexane) composition, the column temperature and the injecting amount on the separation of C_-{60-} and C_-{70-} was examined. The results show that C_-{60-} and C_-{70-} could be baseline separated on the columen packed with PYZM within 15 min with a mixture of toluene and cyclohexane(volume ratio: 50/50) as the mobile phase. The retention time of C_-{60-} and C_-{70-} on the stationary phase increases with decreasing toluene content in the mobile phase or with increasing the column temperature. Based on the results of column loading capacity test, the magnesia-zirconia modified with pyrenebutyric acid is probably considered as a potential material for the separation of fullerenes in preparative scale.

关 键 词：富勒烯 芘基丁酸 锆-镁复合氧化物 固定相 高效液相色谱 

分 类 号：O657[理学—分析化学]