通过硝酸镍催化热解酚醛树脂制备碳纳米管  

Carbon Nanotube Preparation by Catalytic Pyrolysis of Phenolic Resin with Nickel Nitrate

作　　者：王军凯[1] 邓先功[1] 张海军[1] 段红娟[1] 谭操[1] 宋健波[1] 张少伟[1] 

机构地区：[1]武汉科技大学材料与冶金学院,省部共建耐火材料与冶金国家重点实验室,武汉430081

出　　处：《机械工程材料》2016年第8期30-33,共4页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51472184)

摘　　要：以硝酸镍为催化剂前驱体，通过催化热解酚醛树脂的方法制备了碳纳米管；采用X射线衍射仪、扫描电子显微镜和透射电子显微镜研究了热解温度和催化剂用量对碳纳米管合成的影响。结果表明：热解温度为400℃时，添加质量分数为0．75％镍的酚醛树脂热解产物中无碳纳米管生成；温度在600-1000℃时，碳纳米管的生成量及长径比均随温度的升高先增后降，最佳生长温度为800℃；在800℃热解时，随着镍添加量的增加，碳纳米管的生成量和长径比均先增大后减小，最佳添加量为酚醛树脂质量的0．75％，此时碳纳米管的直径为30-60nm，长度可达几十微米。With nickel nitrate as catalyst precursor, the carbon nanotubes （CNTs） were prepared by the method of catalytic pyrolysis of phenolic resin. The effects of pyrolysis temperature and catalyst content on the synthesis of CNTs were investigated by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The results show that at the pyrolysis temperature of 400 ℃, no CNTs were formed in the pyrolytic products of phenolic resin with 0.75wt%Ni. At the pyrolysis temperatures of 600--1 000 ℃, the yield and length- diameter ratio of CNTs first increased then decreased with the increase of temperature and the optimal growth temperature was 800 ℃. When pyrolyzed at 800 ℃, the yield and length-diameter ratio of CNTs first increased then decreased with the increase of nickel content and the optimal nickel content was 0.75wt% of phenolic resin. Under this condition, the diameters of synthesized CNTs were 30-60 nm and the lengths were tens of microns.

关 键 词：酚醛树脂 硝酸镍 催化热解 碳纳米管 

分 类 号：TQ175.75[化学工程—硅酸盐工业]