氨基修饰超高交联树脂对没食子酸的吸附性能  

Adsorption Study of Gallic Acid by Hyper Cross-linked Resin Modified by Amino Function Groups

作　　者：王津南[1,2] 许丽[1,2] 李爱民[1,2] 周扬[1,2] 许玲[1,2] 

机构地区：[1]污染控制与资源化研究国家重点实验室,南京大学环境学院,南京210093 [2]江苏省有机毒物污染控制与资源化工程技术研究中心,南京210038

出　　处：《高等学校化学学报》2010年第1期193-198,共6页Chemical Journal of Chinese Universities

基　　金：国家杰出青年基金(批准号:50825802);国家自然科学基金(批准号:50778088)资助

摘　　要：以亲水性小分子有机酸没食子酸作为研究对象,研究了氨基修饰超高交联树脂对没食子酸的吸附行为和机理.结果表明,氨基修饰超高交联树脂WJN-10对没食子酸有较高的吸附容量和吸附作用力;π-π共轭作用是树脂WJN-10吸附没食子酸主要作用力;WJN-10吸附没食子酸是物理吸附主导;吸附速率主要受控于颗粒内扩散过程;WJN-10对没食子酸有较好的吸附-脱附性能.As typical natural organic acid of hydrophilicity and small molecule, gallic acid （GA） serves to study the adsorption act and mechanism on a new hyper cross-linked resin modified by amino function groups. The adsorption isotherm data indicates that WJN-10 show higher adsorption force and amounts of gallic acid than that of other adsorbents. Its absorption was characterized by physical absorption. Batch kinetic studies in- dicate that the adsorption of GA on WJN-10 could only be fitted by intra-particle diffusion model, and the in- tra-particle diffusion played a dominant role in the adsorption of GA. In particular, excellent adsorption and desorption performance of WJN-10 for gallic acid was shown in dynamic column assay.

关 键 词：氨基修饰超高交联树脂 没食子酸 吸附性能 

分 类 号：O631[理学—高分子化学]