| 离子交换纤维静态吸附丹酚酸B的热力学研究 |
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| 引用本文： | 王闯,刘廷岳.离子交换纤维静态吸附丹酚酸B的热力学研究[J].北京化工大学学报(自然科学版),2012,39(6):17-22. |
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| 作者姓名： | 王闯 刘廷岳 |
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| 作者单位： | 北京服装学院材料科学与工程学院,北京,100029;北京服装学院材料科学与工程学院,北京 100029;北京服装学院北京市服装材料研究开发与评价重点实验室,北京 100029 |
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| 摘 要： | 用自制强碱性离子交换纤维，研究其静态吸附丹酚酸B的热力学性能。确定了所制离子交换纤维静态吸附丹酚酸B的最佳吸附溶剂为pH=9的60%甲醇水溶液。在静态条件下，得到不同浓度下的吸附等温线后，再拟合得到平衡时的Langmuir和Freundlich等温吸附方程，从而计算得到吸附过程中的吸附焓、吉布斯自由能和吸附熵等热力学函数值。该吸附是一个自发进行的吸热、熵增过程。
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| 关 键 词： | 离子交换纤维 丹酚酸B 静态吸附 热力学 |
| 收稿时间： | 2012-05-11 |
Thermodynamics study of the static adsorption of salvianolic acid B by an ion-exchange fiber |
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| WANG Chuang
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LIU TingYue.Thermodynamics study of the static adsorption of salvianolic acid B by an ion-exchange fiber[J].Journal of Beijing University of Chemical Technology,2012,39(6):17-22. |
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| Authors: | WANG Chuang LIU TingYue |
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| Institution: | 1.School of Materials Science and Engineering; 2.Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Institute of Fashion Technology, Beijing 100029, China |
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| Abstract: | The static thermodynamic adsorption properties of a self-made strongly basic ion exchange fiber (IEF) for the adsorption of salvianolic acid B have been investigated. The best system for static adsorption of salvianolic acid B by the IEF was a 60% methanol aqueous solution at pH 9. Under static conditions, the adsorption enthalpy, the Gibbs free energy and the entropy of adsorption were obtained by measuring adsorption isotherms at different concentrations and fitting the Langmuir and Freundlich adsorption isotherm equations. The adsorption is a spontaneous endothermic process involving an increase in entropy. |
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