PCHs的制备及其对甲苯的吸附试验  

Preparation of PCHs and its adsorption study for toluene

作　　者：许晓怡 钟方川[1] 陈佳尧 刘建奇[2] 刘鑫[2] XU Xiaoyi;ZHONG Fangchuan;CHEN Jiayao;LIU Jianqi;LIU Xin(College of Science,Donghua University,Shanghai 201620,China;College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学理学院,上海201620 [2]东华大学环境科学与工程学院,上海201620

出　　处：《东华大学学报（自然科学版）》2022年第1期97-102,共6页Journal of Donghua University(Natural Science)

摘　　要：采用十六烷基三甲基溴化铵(CTAB)、十二胺、硅酸乙酯与膨润土反应,制备具有较好吸附性能的多孔黏土异质结构材料(porous clay heterostructures, PCHs),并使用PCHs对挥发性有机化合物甲苯进行动态吸附,以探究甲苯气体初始质量浓度、总流速对于PCHs吸附量的影响。试验结果表明:PCHs相较膨润土,前者比表面积有极大增加,总孔容和表面孔道分布增加,最可几孔径减小,且对甲苯气体吸附容量明显提升;当甲苯气体初始质量浓度越高、总流速越大时,PCHs对甲苯的饱和吸附量越大。Porous clay heterostructures(PCHs) with good adsorption capacity were produced through the reaction of cetyltrimethylammonium bromide(CTAB), dodecylamine, ethyl silicate and bentonite. PCHs was used to dynamically adsorb toluene, a volatile organic compound, to explore the effect of initial mass concentration and total flow rate of toluene gas on PCHs adsorption capacity. Experimental results show that compared with bentonite, the specific surface area, the total pore volume and the surface pore distribution of PCHs are greatly improved, and the most likely pore size is reduced, and the toluene gas adsorption capacity is significantly improved. The higher the initial mass concentration and total flow rate of toluene gas, the larger the saturated adsorption capacity of toluene by PCHs.

关 键 词：等离子体物理 多孔黏土异质结构材料 甲苯气体 质量浓度 流速 饱和吸附容量 

分 类 号：O59[理学—应用物理]