| β-环糊精微球吸附对苯二酚单甲基醚的动力学研究 |
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| 引用本文： | 李仲谨,支娟娟,苏秀霞,赵钤妃.β-环糊精微球吸附对苯二酚单甲基醚的动力学研究[J].化工环保,2012,32(1):1-5. |
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| 作者姓名： | 李仲谨 支娟娟 苏秀霞 赵钤妃 |
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| 作者单位： | 1. 西京学院基础部,陕西西安,710021
2. 陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 研究了以β-环糊精(β-CD)和环氧氯丙烷为原料,采用反相悬浮聚合法合成的β-CD微球对对苯二酚单甲基醚( HQMME)的静态吸附行为,分析了吸附热力学性质和动力学特征.实验结果表明:β-CD微球对HQMME的吸附过程同时符合Lagergren一级吸附动力学方程和McKay二级吸附动力学方程;β-CD微球对HQMME的吸附等温线可同时用Langmuir等温吸附方程和Freundlich等温吸附方程描述;在不同温度下,β-CD微球吸附HQMME的吸附焓变、吸附熵变、吸附吉布斯自由能变均为负值,说明吸附是一个自发、放热的过程.
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| 关 键 词： | β-环糊精微球 吸附 对苯二酚单甲基醚 动力学 热力学 |
Kinetics Study on Adsorption Behavior of β-Cyclodextrin Microsphere for Hydroquinone Monomethyl Ether |
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| Li Zhongjin
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Zhi Juanjuan
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Su Xiuxia
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Zhao Qianfei.Kinetics Study on Adsorption Behavior of β-Cyclodextrin Microsphere for Hydroquinone Monomethyl Ether[J].Environmental Protection of Chemical Industry,2012,32(1):1-5. |
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| Authors: | Li Zhongjin Zhi Juanjuan Su Xiuxia Zhao Qianfei |
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| Institution: | 1.Department of Basic Science Course,Xijing College,Xi’an Shaanxi 710021,China;2.Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry under Ministry of Education,School of Chemistry and Chemical Industry,Shaanxi University of Science and Technology,Xi’an Shaanxi 710021,China) |
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| Abstract: | Using β-Cyclodextrin(β-CD)as raw material,a kind of β-CD polymer microsphere was synthesized by inverse suspension polymerization method.The static adsorption process of β-CD polymer microsphere for hydroquinone monomethyl ether(HQMME)was studied and its thermodynamic and kinetic characteristics were analyzed.The experimental results show that:The adsorption accords with the first-order Lagergren adsorption kinetics equationas as well as the second-order McKay adsorption kinetics equation;The adsorption isotherm accords with the Langmuir and Freundlich adsorption isotherm equation;The enthalpy change ΔH,entropy change ΔS and Gibbs free energy change ΔG of the adsorption are all negative at different temperatures,which indicates that the adsorption of HQMME on the β-CD polymer microsphere is a spontaneous and exothermic process. |
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| Keywords: | β-cyclodextrin microsphere adsorption hydroquinone monomethyl ether kinetics thermodynamics |
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