文献类型：期刊文献

中文题名：球形活性炭的制备及其对低浓度丙酮的吸附

英文题名：Preparation of activated carbon spheres for adsorption of low concentration acetone

作者：杨全俊[1];梁晓怿[1];冯秀文[1];余盼[1]

机构：[1]华东理工大学,化学工程联合国家重点实验室,特种功能高分子材料及相关技术教育部重点实验室,上海200237

年份：2016

卷号：36

期号：9

起止页码：131

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金资助项目(21177038);科技部支撑计划(2009BAE72B04)

语种：中文

中文关键词：球形活性炭;聚苯乙烯树脂;孔结构;丙酮吸附

外文关键词：activated carbon spheres;polystyrene resin;pore structure;acetone adsorption

摘要：以苯乙烯、二乙烯基苯为原料,采用悬浮聚合法制备了凝胶型聚苯乙烯树脂球,经磺化、炭化、水蒸气活化,得到聚苯乙烯基球形活性炭(PACSs)。通过氮气吸附、二氧化碳吸附对球形活性炭的孔结构进行表征,采用固定床吸附探究其对低浓度丙酮的吸附性能。结果表明,球形活性炭的孔结构可以通过控制活化时间来调控,其比表面积和总孔容均随着活化时间的延长而增加,其中比表面积在789~2022 m^2/g内可调,而微孔孔容所占比例(V_(micro)/V_t)和比表面积所占比例(S_(micro)/S_(BET))则随活化时间的延长先升高后降低。活化时间为1 h时,球形活性炭对丙酮具有最大吸附量。同时,孔径在0.4~0.5 nm的超微孔孔容是低浓度丙酮气体饱和吸附量的决定因素。
Polystyrene-based activated carbon spheres(PACSs)are prepared by sulfonation,carbonization and steam activation of gel-type polystyrene resin balls obtained by suspension polymerization of styrene and divinylbenzene.The pore structures of PACSs are characterized by N_2 adsorption and CO_(2)adsorption.Their adsorption abilities for low concentration acetone are investigated in a fixed-bed reactor.The results show that the pore structures of PACSs could be adjusted by controlling activation time,with BET surface areas(S_(BET))in the range of 789 m^2/g to 2022 m^2/g.The SBET and total pore volume(V_t)increase through increasing the activation time,while the ratio of micropore surface area(S_(micro)/S_(BET))and micropore volume(V_(micro)/V_t)are firstly increased and then decreased.The optimal activation time is found to be 1 hour,achieving a maximum adsorption amount of acetone.Meanwhile,the pore volume of narrow micropores(0.4-0.5 nm)is the key factor for the adsorption capacity of low concentration cetone.