全碳分子C₆0/C₇0的合成与分离

全碳分子C 6 0/C 7 0的合成与分离 SYNTHESIS AND SEPARATION OF FULLERENES C 6 0/C 7 0 陈涑年 1 first-author 朱绫 1 李贵华 1 景治中 1 王美兰 1 曾繁清 1 梁涵瑶 1 郝广明 1 盛蓉生 1 武汉大学现代分析科学系 武汉大学现代分析科学系 在自行设计制作的简单装置上,用电弧蒸发石墨的方法合成了C 6 0/C 7 0.冷凝的烟炱用苯萃取后得到棕黑色的固体产物,产率为9%,质谱分析表明,产物的全碳分子C 6 0与C 7 0之峰高比约为13比1.采用中性氧化铝柱色谱和石墨柱色谱分离C 6 0和C 7 0,均可获得99%以上的C 6 0纯品。实验证明,石墨柱色谱分离法是一个快速、简便而有效的分离大量样品的方法。 C 6 0/C 7 0 was synthesized by vaporizing graphite rods using self-designed apparatus. It was extracted from soot with benzene or toluene. After slowly evaporating the solution, a brown or black solid material was left. The yield was 9%. Mass spectroscopy shows that it contains mainnly C 6 0 and small amount of C 7 0. In transmitted light the crystals appear red-brown in color and have some kinds of crystallinic forms. The mixture of C 6 0/C 7 0 was subjected to column chromatography using neutral alumina or graphite. Column chromatography on neutral alumina with n-hexane as eluent gave satisfactory separation in miligran quantitics. Pure factions containing C 6 0 （ > 99%） were obtained. Column chromatography on graphite with n-hexane-toluene as eluents gave an excellent separation in more than 100 milligran quantitics. Pure fractions containing C 8 0 （ > 99%） were obtained quickly. The result showed that improved column chromatography on graphite is a simple and effective separation mothed to obtain the pure C 6 0. C60/C70 合成 石墨柱色谱分离 C60/C70 synthesis separation by chromatography O621.2 1992-03-01 2021-04-01 3