采用化学气相沉积法于二级流化床装置中大规模连续制备了碳纳米管,产量达到200g/h.TGA和Paman分析表明产物的纯度在50％以上,但石墨化程度不是很高。对反应温度、气体的流速两个因素进行了考察,得出合适的条件为750℃,N25000sccm,C2H21000sccm。该方法不需要氢气的预还原处理,产物提纯后所得的催化剂可以回收使用。
Continuous mass production of carbon nanotubes with chemical vapor deposition was studied by using secondary fluidized bed. Parameters such as temperature and flow rate were investigated. The yield of carbon nanotube is 200g/h. TGA and Raman analysis show the purity of the product is over 50%, but not well graphited. Optimized condition acquired is N25000sccm, C2H21000sccm at 750℃. Hydrogen reduction is not necessary and the catalyst can be reused after purification.
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