摘要
以煤焦油为原料用热解法制备的中间相炭微球由ＫＯＨ活化，其活化条件为：碱炭比１：１～５：１，活化温度在８５０℃～１０００℃．通过对活性发微球的形态、比表面积和孔结构的分析发现，在９００℃下活化３０ｍｉｎ，碱炭比为５：１时，活性炭的比表面积最大可达３０８０ｍ２／ｇ．活化温度升高时，比表面积先增大而后减小，孔径分布向大的方向漂移．活化时间的影响与活化温度的影响相似．
Mesocarbon microbeads (MCMB), prepared from a coal tar, was activated byKOH in the conditions of 1-5 KOH ratio, 850 ℃ ~1 000℃ and 1 h^3 h. The influence of KOHratio, carbonization temperature and reaction time on the spherical shape, carbonizationyields, BET specific surface and pore structure was investigated. The specific surface area of3 080 m2/g was gotten by 5 KOH ratio at 900℃ for 30 mins. Benzene adsorption--desorption behavior of the activated MCMB was also determined. It seems that benzene adsorption quantitiesare approximately consistent with specific surface.
出处
《煤炭转化》
CAS
CSCD
1999年第2期66-70,共5页
Coal Conversion
基金
国家自然科学基金资助项目(59502004).
