| 一个适用于某些极性溶剂与碳八芳烃二元系的正规缔合溶液模型 |
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| 引用本文： | 沈伟国,陈铭之,陈武锋,郑国康. 一个适用于某些极性溶剂与碳八芳烃二元系的正规缔合溶液模型[J]. 化工学报, 1985, 36(1): 45-55 |
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| 作者姓名： | 沈伟国 陈铭之 陈武锋 郑国康 |
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| 作者单位： | 兰州大学化学系,兰州大学化学系,兰州大学化学系,兰州大学化学系 |
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| 摘 要： | 通过测定二元溶液的总蒸气压,以环己烷作惰性参考物质,得到N-甲基吡咯烷酮、硝基苯、苯甲腈的扩展的溶解度参数.提出一个改进的正规缔合溶液模型,利用所得的扩展的溶解度参数处理上述三种极性溶剂与苯乙烯、邻二甲苯构成的二元系的总压-组成数据.用ALGOL语言编写了非线性最小二乘法程序,在<121>机上进行曲线拟合和参数估值,得到化学作用对活度系数的贡献.计算结果表明化学因素是N-甲基吡咯烷酮分离苯乙烯与邻二甲苯体系的重要因素.
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A Regular Associated Model for Binary Solutions of Some Polar Solvents with C_8 Aromatic Hydrocarbons |
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| Shen Weiguo,Chen Mingzhi,Chen Wufeng and Zheng Guokang. A Regular Associated Model for Binary Solutions of Some Polar Solvents with C_8 Aromatic Hydrocarbons[J]. Journal of Chemical Industry and Engineering(China), 1985, 36(1): 45-55 |
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| Authors: | Shen Weiguo Chen Mingzhi Chen Wufeng Zheng Guokang |
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| Affiliation: | Shen Weiguo,Chen Mingzhi,Chen Wufeng and Zheng Guokang(Department of Chemistry,Lanzhou University) |
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| Abstract: | Taking cyclohexane as an inert reference solvent, the expanded solubility parameters of l-methyl-2-pyrrolidone, nitrobenzene and benzonitrile have been obtained by measuring total vapor pressures. An improved regular associated model was used to treat total pressure-composition data of binary mixtures of 1-methyl-2-pyrrolidone, nitrobenzene or benzonitrile with styrene or o-xylene. A program of non-linear least-square fitting was written in ALGOL language to fit the curves and to estimate the parameters on a (121) computer. The contribution of chemical interaction to activity coefficient was calculated. For l-methyl-2-pyrrolidone as a solvent, the result showed that chemical interaction is an important factor in separating styrene from o-xylene. |
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