Investigation on Self-Organization Process of Buckminsterfullerence in Space around an Arc Discharge

研制了一种密闭室弧光放电自动产生器，研究了C60的生产工艺及产率与参数的关系。结果表明，当碳材料中的碳原子得到有效升华时，当氦气压力足以使高温气氛中的碳气频繁碰撞时，以及当氧气和水气等杂质气体含量较少时，可获得有效的C60生产。为实现长时间连续生产，开发了落料式新型富勒烯发生器，并成功地以片状碳材料为原料合成了富勒烯。采用JXB型新型弧光放电方式，生产效率显著提高。它还通过脉冲调制放电得到了改善。这些结果对多种富勒烯的工业化生产具有一定的指导意义。

An automatic producer of fullerence by arc discharge in a closed chamber is developed and production process and parameter dependence of production rate of C60 are investigated. As a result, effective production of C60 is obtained when effective sublimation of carbon atoms from carbon meterials is carried out, when helium gas pressure is adequate to carbon stoms colliding each other frequently in high temperature atmosphere and when impurity gas such as oxygen and water gases are scacely included. In order to realize continuous production for long time, dropping material type new fullerence producer is developed and we succeeded in the synthesis of fullerenes from chip type carbon materials. Production rate is improved remarkably by a JxB type new arc discharge method. It is also improved by a pulse modulated discharge. These results will be useful for industrial scale production of many kinds offullerenes.