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采用催化裂解法,以二氯苯为碳源,二茂铁为催化剂,制取了薄壁碳纳米管。引入多壁碳纳米管的薄壁指数δ来表征多壁碳纳米管的薄壁程度。研究了氢气流量、反应温度和催化剂浓度对薄壁碳纳米管制取的影响。确定了制取薄壁碳纳米管的优化参数:反应温度为850℃,催化剂浓度为0.06g/ml,氩气流量为500ml/min,氢气流量为200ml/min,反应溶液进给量为0.012ml/min。制备出薄壁指数达5.6的大中空薄壁碳纳米管。
Using catalytic cracking method, dichlorobenzene as a carbon source, ferrocene as a catalyst, prepared thin-walled carbon nanotubes. The thin wall index of multi-wall carbon nanotubes is introduced to characterize the thin wall of multi-walled carbon nanotubes. The effects of hydrogen flow rate, reaction temperature and catalyst concentration on the fabrication of thin-wall carbon nanotubes were investigated. The optimal parameters for preparing thin-walled carbon nanotubes were determined. The reaction temperature was 850 ℃, the catalyst concentration was 0.06g / ml, the argon flow rate was 500ml / min, the hydrogen flow rate was 200ml / min, the reaction solution feed rate was 0.012ml / min. Large hollow thin wall carbon nanotubes with a thin wall index of 5.6 were prepared.