| 沸石吸附钾离子的热力学研究 |
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| 引用本文： | 程国斌,张延红,马伟,韩梅,王刃.沸石吸附钾离子的热力学研究[J].离子交换与吸附,2005,21(5):385-390. |
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| 作者姓名： | 程国斌 张延红 马伟 韩梅 王刃 |
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| 作者单位： | 大连理工大学化学系,大连,116024;平顶山工学院,河南,平顶山,467001 |
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| 摘 要： | 研究了沸石吸附钾离子的热力学行为,测定了不同温度下吸附等温线热力学性能的变化,对平衡常数及吸附热进行了计算.结果表明,Langmuir吸附等温式的曲线拟合能较好地描述不同温度下的实验数据,钾离子在K -Na 体系中的平衡常数与温度成负相关,△H为负值且较大,其吸附过程为自发的放热反应.
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| 关 键 词： | 斜发沸石 钾离子 离子交换平衡 热力学 |
| 文章编号： | 1001-5493(2005)05-0385-06 |
| 收稿时间： | 2004-12-30 |
| 修稿时间： | 2004年12月23 |
STUDY OF POTASSIUM THERMODYNAMICS WITH CLINOPTILOLITE |
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| CHENG Guobin,ZHANG Yanhong,MA Wei,HEN Mei,WANG Ren.STUDY OF POTASSIUM THERMODYNAMICS WITH CLINOPTILOLITE[J].Ion Exchange and Adsorption,2005,21(5):385-390. |
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| Authors: | CHENG Guobin ZHANG Yanhong MA Wei HEN Mei WANG Ren |
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| Institution: | 1 Department of Chemistry, Dalian University of Technology, Dalian 116024, China; 2 Pingdingshan Institute of Technology, Pingdingshan 467001, China |
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| Abstract: | The thermodynamic and mechanism of sorption process of clinoptilolite in K+-Na+ solutions have been studied. The sorption isotherms were measured at different temperatures, equilibrium coefficients and enthalpy ?H were calculated. The measured results were fitted with the curve Langmuir isotherm very well. Potassium equilibrium coefficients in K+-Na+ solutions were negatively correlated to temperature and Enthalpy ?H was negative. The sorption process was spontaneous exothermic reaction. |
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| Keywords: | Clinoptilolite Potassium ion Ion exchange equilibrium Thermodynamic |
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