有机胺改性树脂基球形活性炭对二氧化碳的吸附行为  

Adsorption Behavior of Carbon Dioxide on Organic Amine Modified Resin-Based Spherical Activated Carbon

作　　者：胡经纬 苏静雯 刘思彤 李诗琪 陈纪莹 詹亮[1] HU Jingwei;SU Jingwen;LIU Sitong;LI Shiqi;CHEN Jiying;ZHAN Liang(State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学化工学院,化学工程联合国家重点实验室,上海200237

出　　处：《华东理工大学学报（自然科学版）》2024年第2期192-198,共7页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(51472086,51002051,22075081,20806024);上海市自然科学基金(12ZR1407200)。

摘　　要：以球形结构的固废离子交换树脂为原料,经CO_(2)活化、酸洗处理制得具有较高比表面积和较大中孔孔容的树脂基球形活性炭(HRSAC),然后在其表面负载聚乙烯亚胺(PEI)制得吸附材料PEI-HRSAC。系统考察了PEI负载量和吸附温度对CO_(2)吸附性能的影响,结果表明,在活化温度为950℃、活化时间为1 h的最佳活化工艺条件下,所制得的树脂基球形活性炭经酸洗处理后其比表面积为1365 m^(2)/g,中孔孔容为2.04 cm^(3)/g,中孔孔径主要分布在10~40 nm;PEI-HRSAC吸附材料对CO_(2)的吸附性能随吸附温度和PEI负载量的升高先增大后减小;当PEI负载量为65%、吸附温度为75℃时,PEI-HRSAC吸附材料对CO_(2)的吸附量最高,约为4.09 mmol/g,在经过4次循环吸/脱附后吸附量仍保持在较高水平(3.66 mmol/g)。Resin-based spherical activated carbon(RSAC)with high specific surface area and large mesopore volume(HRSAC)was prepared from spherical solid waste ion exchange resin by CO_(2)activation and acid treatment,and HRSAC supported polyethyleneimine(PEI-HRSAC)adsorption materials were prepared.The effects of PEI loading and adsorption temperature on CO_(2)adsorption performance were systematically investigated.The results indicate that the optimal activation conditions are the activation temperature of 950°C and activation time of 1 h.Subsequently,the as-prepared RSAC is treated with hydrochloric acid,and the obtained supported HRSAC has a specific surface area of 1365 m^(2)/g.The mesopore volume of 2.04 cm^(3)/g,and the mesopore diameter is mainly distributed in the range of 10—40 nm.The CO_(2)adsorption performance of PEI-HRSAC adsorption materials increases firstly and then decreases with the increasing of adsorption temperature and PEI loading,respectively.When the PEI loading is 65%and the adsorption temperature is 75°C,the CO_(2)adsorption capacity of the obtained adsorption materials reaches the maximum value of 4.09 mmol/g,and remains at a high level(3.66 mmol/g)after 4 cycles of adsorption and desorption.

关 键 词：CO_(2)吸附 离子交换树脂 球形活性炭 聚乙烯亚胺 比表面积 

分 类 号：TQ09[化学工程]