胶体碳微球的活化及其亚甲基蓝液相吸附性能的研究  

Research on activation of the colloidal carbon spheres and its methylene-blue solution adsorptive performance

作　　者：胡建军[1] 周书喜[1] 王强[1] 

机构地区：[1]江苏工业学院,常州213016

出　　处：《化工新型材料》2009年第6期55-57,60,共4页New Chemical Materials

基　　金：江苏省自然科学基金资助项目(BK2005024)

摘　　要：以葡萄糖为前驱体，采用液相碳化法，制备颗粒约为100-200nm胶体碳微球。采用KOH作活化剂对胶体碳微球进行活化处理。考察了碱炭比、活化温度和保温时间等工艺因素对孔径和比表面积的影响。通过XRD、SEM等分析手段对胶体碳微球活化前后的表面形貌、孔径分布、显微结构进行分析。经热处理和活化后，胶体碳微球的BET比表面积从26．6m^2／g增加到1383．4m^2／g。相同实验条件下，在亚甲基蓝液相吸附试验中，经活化处理后的样品所表现出的吸附量是商业活性炭Calgon-F300的两倍。The colloidal carbon spheres with diameter about 100-200nm were synthesized hydrothermally with glucose as precursor. Then, it was activated by KOH at different temperature and time. The effect of activation conditions such as the ratio of m（KOH）/m（C）, activation temperature and time of heat preservation on the BET specific surface area and pore diamete were investigated. The as-prepared samples were characterized by scanning electron microscope（SEM）, X-ray diffraction（XRD）, nitrogen adsorption-desorption isotherm measurement. The measured BET value of these colloidal carbon spheres obviously increased from original 26.6m^2/g to 1383.6m^2/g after sintering and activation. The adsorption property of activated colloidal carbon spheres was investigated by methylene-blue solution adsorption experiments. The adsorptive capacity of the activated colloidal carbon spheres was two times than that of commercial carbon-Calgon F300 under the same conditions.

关 键 词：胶体碳球 氢氧化钾 吸附 

分 类 号：TQ427.1[化学工程]