| 用改进的Eyring方程推算无限稀释扩散系数 |
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| 引用本文： | 钱仁渊,范益群,史美仁,时钧.用改进的Eyring方程推算无限稀释扩散系数[J].膜科学与技术,1995(4). |
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| 作者姓名： | 钱仁渊 范益群 史美仁 时钧 |
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| 作者单位： | 南京化工大学化学工程系 |
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| 摘 要： | 在Ｅｙｒｉｎｇ绝对速率理论的基础上，提出一个关联扩散自由体积的关系式，从而得到改进的扩散系数计算方程，可从纯物质粘度推算无限稀释扩散系数，方程不含任何待定参数．对８２个各类体系共３３２点扩散系数数据，计算平均相对偏差为１２．１％，而Ｗｉｌｋｅ－Ｃｈａｎｇ方程对同样体系的计算偏差为１４．８％，Ｓｉｄｄｉｑｉ－Ｌｕｃａｓ方程的偏差为１２．３％．
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| 关 键 词： | 无限稀释，扩散系数，粘度 |
A MODIFIED EYRING S EQUATION FOR PREDICTION OF INFINITE DILUTION DIFFUSION COEFFICIENT |
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| Qian Renyuan, Fan Yiqun, Shi Meiren, Shi Jun.A MODIFIED EYRING S EQUATION FOR PREDICTION OF INFINITE DILUTION DIFFUSION COEFFICIENT[J].Membrane Science and Technology,1995(4). |
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| Authors: | Qian Renyuan Fan Yiqun Shi Meiren Shi Jun |
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| Abstract: | Baseci on the Eyring s absolute rate theory,a modified equation was proposed to es-timat,the infinite dilution diffusion coefficient from viscosity for binary liquid.It had the advan-tage of being based entirely on theoretical considerations and involved no experimental curve-fit-ting parameters, For 82 system 332 data points, the average absolute deviation calculated byproposed equation was 12.1%which. was better than the results of Wilke-Chang equation( 14.8%) and Siddiqi-Lucas equation(12.3%). |
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| Keywords: | infinite dilution diffusion coefficient viscosity |
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