高比表面积活性炭的制备及其吸附性能的初步研究  

PREPARATION AND ADSORPTION PROPERTIES OFSUPER ACTIVE CARBON FROM PETROLEUM COKE

作　　者：刘海燕[1] 凌立成[1] 刘植昌[1] 乔文明[1] 刘朗[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《新型炭材料》1999年第2期21-25,共5页New Carbon Materials

基　　金：国家自然科学基金;国家煤转化重点实验室联合资助项目

摘　　要：以石油焦为原料，采用ＫＯＨ化学活化法，在不同的活化条件下对石油焦进行活化。研究原料粒度、活化温度以及活化时间对所制得的活性炭的比表面积及孔结构的影响。结果表明：以石油焦为原料可以制得比表面积为３３００ｍ２／ｇ的高比表面积活性炭。活性炭的孔径分布较窄，其碘吸附值和苯吸附值均较常规活性炭有大幅度提高。Super active carbon(SAC) with BET surface area of 3 300 m2/g was successfully prepared from petroleum coke by the activation with KOH. The effects of grain size of raw coke, activation temperature and time on the surface area and pore structure of derived super active carbon were also investigated. The surface area of super active carbon increased with the increasing of activation temperature, time and decreasing of raw coke size, reaching the maximum value, and then decreased due to the excess burnoff which made the micropore transfer into mesopore or macropore. The adsorption capacities of super active carbon for benzene and iodine are much higher than those of conventional active carbon and active carbon fibers.

关 键 词：高比表面积 活性炭 石油焦 吸附 

分 类 号：O647.31[理学—物理化学] TQ424.19[理学—化学]