甲萘酚和甲萘胺在超高交联吸附树脂上的协同吸附行为  

Cooperative Adsorption of 1-Naphthol and 1-Naphthylamine onto Hyper-Cross-Linked Polymeric Adsorbents

作　　者：张炜铭[1] 陈金龙[1] 张全兴[1] 潘丙才[1] 鲁俊东[1] 

机构地区：[1]南京大学环境学院污染控制与资源化国家重点实验室

出　　处：《环境科学》2006年第4期727-731,共5页Environmental Science

基　　金：国家自然科学基金项目(20274017);江苏省自然科学基金项目(BK2004415)

摘　　要：研究了水溶液中甲萘酚和甲萘胺在超高交联吸附树脂NDA103、NDA100上的协同吸附行为.实验结果表明,在较高平衡浓度范围内该吸附树脂对双组分水溶液中甲萘酚和甲萘胺双组分(摩尔比分别为3∶1、1∶1、1∶3)的吸附总量大于相同平衡浓度下对单组分水溶液中甲萘酚和甲萘胺的吸附量,呈现协同吸附现象,其主导机制是2种吸附质分子之间的氢键作用.单组分甲萘酚或甲萘胺水溶液和双组分共存水溶液中吸附质分子在吸附树脂上的吸附等温线均符合Langmuir模型.吸附温度由293K升至313K时,甲萘酚和甲萘胺在NDA103上的协同吸附效应的变化明显大于NDA100.NDA103树脂结构上的胺基既加强了对甲萘酚的吸附亲和力又增加了甲萘酚的协同吸附系数.Cooperative simultaneous adsorptions of 1-naphthol and l-naphthylamine from aqueous solutions on hyper-cross-linked polymeric adsorbents （NDA103 and NDA100） were investigated. The results indicate that at the higher equilibrium concentrations, the total uptake amounts of 1 naphthol and 1 naphthylamine in binary systems （1-naphthol： 1-naphthylamine = 3 ： 1, 1 ： 1, 1 ： 3） are obvious larger than the pure uptake amounts in single systems, and a large excess was noted on the particle surface at saturation, which is presumably due to the cooperative effect primarily arisen from the hydrogen bonding or weak acid-base interaction between 1- naphthol and 1-naphthylamine. The adsorption isotherms for them in both single and binary systems can be well fitted by Langmuir equation. The increasing temperature from 293K to 313K puts much more effect on the cooperative coefficient of simultaneous adsorption of 1-naphthylamine and 1-naphthol on NDA103 than on NDA100. The amino groups on NDA103 enhance the adsorption affinity as well as the cooperative coefficient of 1-naphthol.

关 键 词：超高交联吸附树脂 甲萘酚 甲萘胺 协同吸附 

分 类 号：X131.3[环境科学与工程—环境科学]