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)》 2010年第3期283-286,共4页
摘 要: 详细研究了D301R弱碱性阴离子交换树脂对水溶液中罗丹明B的吸附行为,测定了不同温度下吸附的动力学曲线,提出了吸附动力学模型,计算了吸附活化能.结果表明,吸附动力学符合表面过程控制的准二级反应模型,其速率常数k2在303K时为6.09×10-3g·mg-1·min-1,并随温度的升高而升高,吸附活化能为11.54kJ·mol-1. The adsorption properties of the D301R resin towards Rhodamine B were investigated in details.The adsorption kinetic curves were determined at different temperature.The adsorption kinetics follows the pseudo-second-order model controlled by a surface process.The rate constant k2 is 6.09×10-3 g·mg-1·min-1 at 303K, which increased with the increase of temperature.The activation energy of adsorption is 11.54 kJ·mol-1.