【作者】 张进琪； 刘云； 邹惠仙；

【Author】 Zhang Jinqi Liu Yun Zou Huixian (Institute of Chemistry and Chemical Technology, Nanjing University, Nanjing, 210093 Jiangsu) (2 State Key Laboratory of Pollution Control and Resourse Reuse, School of Environment, Nanjing Unviversity, Nanjing 210093)

【机构】 南京大学化学化工学院； 南京大学环境学院污染控制与资源化重点试验室；

【摘要】 用4’-羟甲基苯并-15-冠-5(HMB15C5),4’-甲基苯并-15-冠-5(MB15C5)两种4’-取代苯并-15-冠-5(SB15C5) 和苯并-15-冠-5(B15C5)制备了三种冠醚有机膨润土。研究了它们的结构、稳定性及对萘和铜离子的吸附作用及机理。结果表明,HMB15C5有机膨润土稳定性高,在蒸馏水中的解析率小于1％,而MB15C5有机膨润土和B15C5 有机膨润土稳定性不高;加入等量的冠醚与膨润土制备的冠醚有机膨润土,B15C5和MB15C5能斜立于膨润土层间, 而HMB15C5能在膨润土的层间形成双分子层:萘和铜离子在冠醚有机膨润土上有较好的吸附性能,萘能够分配于冠醚形成的有机相中,而铜离子在冠醚有机膨润土的吸附等温线则符合Langmuir等温吸附曲线。更多还原

【Abstract】 4’-hydroxymethylbenzo-15-crown-5(HMB15C5)-bentonite, 4’-methylbenzo-15-crown-5 (MB15 C5)-bentonite and benzo-15-crown-5 (B15C5)-bentonite have been prepared from Na-bentonite. And its structure, stability and adsorption properties of naphthalene and Cu2+ from water have been studied. HMB15C5-bentonite has high stability in distilled water, with more than 99% of HMB15C5 remaining bound to bentonite, but MB15C5-bentonite and B15C5-bentonite were not so stable as HMB15C5-bentonite. With the same equivalent, HMB15C5 can form bilayer in the interlayer, B15C5 and MB15C5 can tilt in the interlayer of bentonite. Adsorption of naphthalene to crown ether-bentonite could be described by partition process. For bentonite modified with crown ether-Bentonite, the equilibrium data closely fitted the Langmuir model.更多还原