| STUDY ON THE THERMODYNAMIC PROPERTIES OF ADSORPTION OF ETHYL BENZOATE AND DIETHYL PHTHALATE BY PHENOLIC RESIN ADSORBENTS |
| |
| 作者姓名： | ZhongWang Zuo-qingShi Rong-fuShi Yun-geFan Yi-zhongYang |
| |
| 作者单位： | [1]ShenyangCollegeofChemicalTechnology,Shenyang110021,China [2]TheStateKeyLaboratoryofFunctionalPolymerMaterialsforAdsorptionandSeparation,InstituteofPolymerChemistry,NankaiUniversity,Tianjin300071,China |
| |
| 摘 要： | This paper presents experimental observations on the adsorption of individual solutes by a simple thermodynamic framework, and the equilibrium adsorption of ethyl benzoate and diethyl phthalate on phenolic resin adsorbent in hexane solutions within the temperature range of 293-313 K. The experimental results show that the Freundlich adsorption law is applicable to the adsorption of ethyl benzoate and diethyl phthalate on the adsorbent, since all the correlative factors R‘are larger than 0.99. The negative values of all the isosteric adsorption enthalpies for ethyl benzoate and diethyl phthalate indicate that they undergo exothermic processes, while their magnitudes (19-28 kJ/mol) manifest a hydrogen bonding sorption process. Other thermodynamic properties: the free energy changes and the entropy change associated with the adsorption have been calculated from the Gibbs adsorption equation and the Gibbs-Helmholtz equation.
|
| 关 键 词： | 吸附热力学 苯甲酸乙酯 邻苯二甲酸二乙酯 酚醛树脂吸附剂 |
| 收稿时间： | 2003-01-20 |
| 修稿时间： | 2003-04-04 |
STUDY ON THE THERMODYNAMIC PROPERTIES OF ADSORPTION OF ETHYL BENZOATE AND DIETHYL PHTHALATE BY PHENOLIC RESIN ADSORBENTS* |
| |
| ZhongWang Zuo-qingShi Rong-fuShi Yun-geFan Yi-zhongYang.STUDY ON THE THERMODYNAMIC PROPERTIES OF ADSORPTION OF ETHYL BENZOATE AND DIETHYL PHTHALATE BY PHENOLIC RESIN ADSORBENTS[J].Chinese Journal of Polymer Science,2004,0(3):239-245. |
| |
| Authors: | Zhong Wang Zuo-qing Shi Rong-fu Shi Yun-ge Fan Yi-zhong Yang |
| |
| Institution: | a.Shenyang College of Chemical Technology; Shenyang 110021; China b.The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation; Institute of Polymer Chemistry; Nankai University; Tianjin 300071; China; |
| |
| Abstract: | This paper presents experimental observations on the adsorption of individual solutes by a simple thermodynamic framework, and the equilibrium adsorption of ethyl benzoate and diethyl phthalate on phenolic resin adsorbent in hexane solutions within the temperature range of 293-313 K. The experimental results show that the Freundlich adsorption law is applicable to the adsorption of ethyl benzoate and diethyl phthalate on the adsorbent, since all the correlative factors R' are larger than 0.99. The negative values of all the isosteric adsorption enthalpies for ethyl benzoate and diethyl phthalate indicate that they undergo exothermic processes, while their magnitudes (19-28 kJ/mol) manifest a hydrogen bonding sorption process. Other thermodynamic properties: the free energy changes and the entropy change associated with the adsorption have been calculated from the Gibbs adsorption equation and the Gibbs-Helmholtz equation. |
| |
| Keywords: | Phenolic resin adsorbent Adsorption Ethyl benzoate Diethyl phthalate ADSORBENTS PHENOLIC RESIN DIETHYL PHTHALATE ETHYL BENZOATE ADSORPTION THERMODYNAMIC PROPERTIES free energy changes entropy associated Gibbs equation thermodynamic properties hydrogen bonding sorption processes negative values correlative factors results |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
| 点击此处可从《高分子科学》下载免费的PDF全文 |
