铵型斜发沸石上铵铜离子水热交换反应的研究  

Study on the 2NH_4^+Cu^(2+) Ion Exchange Reaction on the NH_4^+-form Clinoptilolite

作　　者：陈铁旦[1] 李曼尼[1] 

机构地区：[1]内蒙古大学化学化工学院

出　　处：《内蒙古大学学报（自然科学版）》2007年第4期386-389,共4页Journal of Inner Mongolia University：Natural Science Edition

摘　　要：用热浸煮法制备了铵型斜发沸石,用水热离子静态交换反应考察了铵型沸石上2NH4+Cu2+离子交换平衡时的平衡交换容量、交换效率.结果表明,铵型沸石对Cu2+的交换效率随Cu2+初始浓度增加而降低,随温度升高而增加.20℃时交换效率高达62%以上.同时该离子交换过程满足L angm u ir单分子层交换行为.40℃时仅有35.8%的NH4+被Cu2+交换,这与NH4+在沸石骨架上的配位方式和位置有关.NH4^＋-form clinoptilolite was prepared with the hot immersed method, the ion exchange capacity and efficiency of ion exchange reaction 2NH＋ （Z）→←Cu^2＋ （S） were investigated with the hydrothermal method. The results showed that, the efficiency of Cuz＋ ion exchange decreased with the increasion of its initial concentration and increased with the raise of temperature, and the efficiency was more than 62% in 20℃. Meanwhile, the process of 2NH4^＋ （Z）→←Cu^2＋ （S） ion exchange reaction was coincident with the Langmuir isotherm model of monomolecular layer. Only 35.8% of NH4^＋ ions was exchanged by Cu^2＋ ions in 40℃ ,it was related with the coordinated pattern and place of NH{ ions on the clinoptilolite network.

关 键 词：铵铜离子 水热交换 铵型斜发沸石 

分 类 号：P578.974[天文地球—矿物学]