超高交联吸附树脂的孔结构对CS_(2)的吸附-脱附的影响  

Effects of pore structure of hypercrosslinked polymeric resin on adsorption and desorption of carbon disulfide

作　　者：曲宏昌 马佳凯 王婧 井涛 龙超[1] QU Hongchang;MA Jia-kai;WANG Jing;JING Tao;LONG Chao(State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment,Nanjing University,Nanjing 210023,China;Lianyungang Donghai Ecological Environment Monitoring Station,Lianyungang 222300,China)

机构地区：[1]南京大学环境学院,污染物控制与资源化研究国家重点实验室,江苏南京210023 [2]连云港市东海生态环境监测站,江苏连云港222300

出　　处：《中国环境科学》2023年第6期2833-2840,共8页China Environmental Science

基　　金：江苏省重点研发计划(社会发展)(BE2022838)。

摘　　要：以苯乙烯为单体、二乙烯苯为交联剂、氯甲醚为氯甲基化试剂,通过改变致孔剂(甲苯或者液体石蜡)种类和交联剂用量,合成出具有不同孔结构的系列超高交联吸附树脂.柱穿透吸附实验结果表明,超高交联吸附树脂对CS_(2)的吸附量与0.4~1nm之间的微孔体积有关,而与比表面积、微孔体积(0~2nm)无明显相关性;程序升温脱附实验结果表明,当吸附树脂具有更高比例的中孔和大孔孔容时,CS_(2)脱附的峰值温度更低,脱附更容易.As a chloromethylation reagent,suspension copolymerization of styrene and vinyl benzene was used to create a number of hypercrosslinked polymeric resins(HPRs).By altering the types of pore-forming agents(toluene or liquid paraffin)and the volume of vinyl benzene,a series of ultra-high cross-linked adsorption resins with different pore structures of HPRs were synthesized.The column breakthrough adsorption experiments demonstrate that the adsorption capacity of HPRs for CS_(2)is related to the microporous volume between 0.4 and 1nm(0~2nm),but has no obvious correlation with specific surface area and total microporous volume(0~2nm).The temperature-programmed desorption studies reveal that,when the adsorption resin has a higher proportion of mesopores and macropores,the CS_(2) desorption becomes easier with a lower peak temperature.

关 键 词：挥发性有机物 二硫化碳 超高交联吸附树脂 孔结构 

分 类 号：X512[环境科学与工程—环境工程]