| 离子交换纤维吸附儿茶素的热力学 |
| |
| 引用本文： | 李明愉,曾庆轩,冯长根,孙伟娜.离子交换纤维吸附儿茶素的热力学[J].化工学报,2005,56(7):1164-1168. |
| |
| 作者姓名： | 李明愉 曾庆轩 冯长根 孙伟娜 |
| |
| 作者单位： | 北京理工大学机电工程学院爆炸灾害预防与控制国家重点实验室，北京 100081 |
| |
| 基金项目： | 国家高技术研究发展计划项目（2002AA245091）. |
| |
| 摘 要： | 采用自制离子交换纤维对儿茶素的吸附特性进行了研究，在温度为286～328 K和研究的浓度范围内，离子交换纤维对儿茶素吸附平衡数据符合Langmuir和Freundlich吸附等温方程.Freundlich吸附等温线和等量吸附焓表明：离子交换纤维对儿茶素吸附是吸热过程.对儿茶素在离子交换纤维上的吸附焓、自由能、吸附熵的计算表明，该离子交换纤维对儿茶素的吸附没有化学键生成，并对吸附行为作了合理解释.
|
| 关 键 词： | 离子交换纤维 吸附热力学 儿茶素 |
| 文章编号： | 0438-1157（2005）07-1164-05 |
| 收稿时间： | 05 12 2004 12:00AM |
| 修稿时间： | 2004-05-12 |
Thermodynamic study of adsorption of catechin on ion exchange fiber |
| |
| Li Mingyu,Zeng Qingxuan,Feng Changgen,SUN Weina.Thermodynamic study of adsorption of catechin on ion exchange fiber[J].Journal of Chemical Industry and Engineering(China),2005,56(7):1164-1168. |
| |
| Authors: | Li Mingyu Zeng Qingxuan Feng Changgen SUN Weina |
| |
| Abstract: | The adsorption of catechin by using self-made ion exchange fiber(IEF) adsorbent was studied. Equilibrium data for the adsorption of catechin from aqueous solutions by IEF adsorbent within the temperature range of 286—328 K and observed concentration range were obtained and correlated with the Langmuir-type and Freundlich-type isotherm equations. Freundlich adsorption isotherms and isosteric enthalpy of the adsorption of catechin indicated that the process of adsorption of catechin from aqueous solutions by IEF was an endothermic process. Estimations of the isosteric enthalpy of adsorption, free energy, and entropy of adsorption were reported, and the adsorption behavior was reasonably interpreted. |
| |
| Keywords: | ion exchange fiber adsorption thermodynamic ( )-catechin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
