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交联壳聚糖树脂对铂的吸附热力学研究
Study on Adsorption Thermodynamics of Platinum by Crosslinked Chitosan Resin
【摘要】 通过静态吸附实验,测定了交联壳聚糖树脂对铂的吸附等温线,并根据热力学函数关系计算了吸附焓、吸附自由能和吸附熵。结果表明,其等温吸附符合Langmuir方程和Freundlich方程所描述的规律;吸附过程为自发的吸热的熵增吸附。
【Abstract】 Adsorption isotherm of platinum on crosslinked chitosan resin was determined by static adsorption ex- periments.Values of isosteric adsorption enthalpy,adsorption free energy and adsorption entropy were calculated based on thermodynamics functions.Results show that the isothermal adsorption follows the isothermal adsorption equations of Freundlich and Langmuir.The adsorption is a spontaneous endothermic process of increased entropy.
【基金】 国家自然科学资金资助项目(No.50174018)。
- 【文献出处】 贵金属 ,Precious Metals , 编辑部邮箱 ,2007年S1期
- 【分类号】TF833
- 【被引频次】3
- 【下载频次】138