机构地区: 海南师范大学化学与化工学院
出 处: 《海南师范大学学报(自然科学版)》 2009年第4期414-417,共4页
摘 要: 合成了Keggin型缺位杂多阴离子PW11O73-9(PW11),并进行了红外光谱表征,研究了PW11在D301R弱碱性阴离子交换树脂上的吸附行为,根据测定的吸附动力学曲线,提出了吸附所遵从的动力学模型,并计算了相应的速率常数.结果表明,吸附动力学符合表面过程控制的准二级吸附模型,吸附速率常数k2在298K时为4.11×10-1g·mg-1·min-1. Keggin-type lacunary heteropolytungstate anion PW11O37-9 (PW11) was synthesized and characterized by IR. The adsorption properties of the D301R resin towards PW11 were investigated. The adsorption kinetic curve was determined. It was found that the adsorption kinetics follows the pseudo-second-order model controlled by a surface process. The rate constant k2 is 4.11×10-1 g·mg-1·min-1.