中间相炭微球的活化  

PREPARATION OF HIGH SURFACE AREA ACTIVE CARBONMICROBEADS FROM MESO-CARBON MICROBEADS

作　　者：吕永根[1] 凌立成[1] 刘朗[1] 张碧江[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,太原030001

出　　处：《煤炭转化》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).

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.

关 键 词：煤焦油 中间相 炭微球 活化 活性炭 

分 类 号：TQ424.1[化学工程]