高比表面积聚苯乙烯基球状活性炭的制备研究  

Study on preparation of polystyrene-based spherical activated carbon with high specific surface area

作　　者：董红静[1] 邬剑明[1] 晏泓[2] 李开喜[3] 孙国华[3] 

机构地区：[1]太原理工大学矿业工程学院,太原030024 [2]太原理工大学材料科学与工程学院,太原030024 [3]中国科学院山西煤炭化学研究所炭材料重点实验室,太原030001

出　　处：《化工新型材料》2013年第9期40-43,共4页New Chemical Materials

基　　金：国际科技合作项目(2010DFB90690);国家自然科学基金(51002166;51061130536;51172251)

摘　　要：以聚苯乙烯基大孔吸附树脂球为炭前驱体,经空气预氧化、炭化和活化制备了高比表面积球状活性炭。系统考察了不同氧化和活化条件对氧化球和活化球的物理性能的影响。结果表明:升温速率、氧化温度和氧化时间分别为0.25℃/min、300℃和3h时所得到的氧化球的CCl4吸附值最高,可达970mg/g。此外,当活化温度和活化时间分别为850℃和4h时,球状活性炭的CCl4吸附值最高,为2700mg/g,相应的比表面积为1759m2/g。Spherical activated carbons with high specific surface area were prepared by air pre-oxidation, carboniza tion and activation based on polystyrene-based macroporous adsorptive resin spheres as the carbon precursor. The results showed that the maximum adsorption value（970mg/g）of oxidized spheres could be obtained at 300℃ for 3h with the heating rate of 0. 25℃ /min. In addition,when the activation temperature and activation time were 850℃ and 4h, the CC14 ad sorption value of activated carbon was up to the maximum, 2700mg/g, with the specific surface area of 1759m2/g.

关 键 词：球状活性炭 预氧化 活化 高比表面积 

分 类 号：TQ424.1[化学工程]