摘要:The mixture of fullerene—C60 and —C70 was successfully separated in larger amount by liquid chromatogra-phy on graphite column.The column was first eluted with a mixture of hexane and toluene,and then withtoluene.The eluates were monitored by UV/visible absorption spectroscopy.Graphite column shows high perfor-mance for separation.and much larger quantities of pure C60 can be easily obtained.The synthesis of fullerenes(C60 and C70)in macroscopic quantities has stimulated scientists to study on themethod for separating C60 and C70.Because of the poor solubility of fullerenes C60/C70 in most organic solvents,theseparation of C60 and C70 proved to be a challenging task.Most attempts at the separation have used silica and alu-mina as the stationary phase and a mixture of hexane and benzene(or toluene)as the mobile phase.Fullerenes,however,have only limited solubility in hexane,these separations are usually only achieved by limit-ing the amount of sample to a few milligrams.The hexane-silica technique using phenylglycine based HPLCcolumns appears to offer good separation,but only for submilligram amounts. The use of graphite powder as the stationary phase in liquid chromatography is an advanced separation tech-nique for fullerenes C60/C70.The technique is based on that the fullerene-C60 is different from C70 in the de-gree of electron delocalisation,and C60 is much less diamagnetic than C70.It is expected that the dissimilarity willcause the C60/C70 molecules to exhibit different interactions with graphite,and can be separated from each other onthis basis.