Carbon nanometer tube arc discharge preparation method under vacuum condition

The invention belongs to the field of coal chemistry and carbon material, in particular a process for preparing large amounts of carbon nano tubes using coal as raw material by arc discharge technology under vacuum condition, wherein coal based carbon rod or coal based composite charcoal rod prepared by mixing coal and catalyst is used as anode in the arc plasma apparatus for discharge evaporation under vacuum condition, the reactor is opened after the ending of discharge to obtain large size high purity single walled carbon nano tubes in film shape or gram magnitude pure multiple wall carbon nano tubes. 本发明属于煤化工和炭素材料技术领域，涉及到一种以煤为原料在真空条件下用电弧放电技术大量制备碳纳米管的方法。其特征是将煤基炭棒或煤与催化剂混合后制成煤基复合炭棒作为阳极在电弧等离子体装置内真空条件下放电蒸发，放电结束后打开反应器得到大片的以膜状物存在的高纯单壁碳纳米管或克量级纯净的多壁碳纳米管。本发明的效果和益处是所制得的碳纳米管产率、纯度及质量都很高，可在电子器件、场发射、储氢材料、化学传感器和增强复合材料等诸多方面获得应用；同时制备工艺具有原料价廉易得、操作工艺简单、产品性能优良等特点，适用于碳纳米管的大规模生产。