| 用定标粒子理论研究不同温度下2-甲基-2-丙醇与腈二元液相混合物的超额热力学参数和超音速度理论估值(英文) |
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| 引用本文： | K. Rajagopal,S. Chenthilnath. 用定标粒子理论研究不同温度下2-甲基-2-丙醇与腈二元液相混合物的超额热力学参数和超音速度理论估值(英文)[J]. 中国化学工程学报, 2010, 18(5): 804-816 |
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| 作者姓名： | K. Rajagopal S. Chenthilnath |
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| 作者单位： | 1. Department of Physics, Govt. College of Engineering, Tirunelveli-627007, Tamilnadu, India;2. Department of Physics, Satyam College of Engineering and Technology, Nagercoil-629301, Tamilnadu, India |
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| 摘 要： | Density, ρ, ultrasonic speed, u, and viscosity, η, of binary mixtures of 2-methyl-2-propanol (2M2P) with acetonitrile (AN), propionitrile (PN) and butyronitrile (BN) including those of pure liquids are measured over the entire composition range at temperatures 298.15, 303.15 and 308.15 K. From these experimental data, the excess available volume, E a V , excess free volume, E f V , excess isothermal compressibility, E T β , excess thermal expansion coefficient, E α , and excess internal pressure, E i π , are calculated. The variation of these properties with composition and temperature are discussed in terms of molecular interactions between unlike molecules of the mixtures. It is found that the values of E a V , E f V , E T β and E α are positive and those of E i π are negative for all the mixtures at each temperature studied, indicating the presence of weak interactions between 2M2P and AN/PN/BN molecules. The variations of E a V , E f V , E T β , E α and E i π values with composition indicate that the interactions in these mixtures follow the order: ANPNBN, i.e., the 2M2P-nitrile interaction decreases with the increase of alkyl chain length in these nitrile molecules. In addition, the theoretical ultrasonic velocity is calculated using the scaled particle theory and compared with the experimental values.
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| 关 键 词： | 2-methyl-2-propanol homologous nitriles excess properties molecular interactions scaled particle theory |
| 收稿时间： | 2009-07-21 |
| 修稿时间： | 2009-7-21 |
Study on Excess Thermodynamic Parameters and Theoretical Estimation of Ultrasonic Velocity Using Scaled Particle Theory in Binary Liquid Mixtures of 2-Methyl-2-propanol and Nitriles at Different Temperatures |
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| K. Rajagopal,S. Chenthilnath. Study on Excess Thermodynamic Parameters and Theoretical Estimation of Ultrasonic Velocity Using Scaled Particle Theory in Binary Liquid Mixtures of 2-Methyl-2-propanol and Nitriles at Different Temperatures[J]. Chinese Journal of Chemical Engineering, 2010, 18(5): 804-816 |
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| Authors: | K. Rajagopal S. Chenthilnath |
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| Affiliation: | 1. Department of Physics, Govt. College of Engineering, Tirunelveli-627007, Tamilnadu, India;2. Department of Physics, Satyam College of Engineering and Technology, Nagercoil-629301, Tamilnadu, India |
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| Abstract: | Density, ρ, ultrasonic speed, u, and viscosity, η, of binary mixtures of 2-methyl-2-propanol (2M2P) with acetonitrile (AN), propionitrile (PN) and butyronitrile (BN) including those of pure liquids are measured over the entire composition range at temperatures 298.15, 303.15 and 308.15 K. From these experimental data, the excess available volume, VaE, excess free volume, VfE, excess isothermal compressibility, βTE, excess thermal expansion coefficient, aE, and excess internal pressure, πiE, are calculated. The variation of these properties with composition and temperature are discussed in terms of molecular interactions between unlike molecules of the mixtures. It is found that the values of VaE, VfE, βTE and aE are positive and those of πiE are negative for all the mixtures at each temperature studied, indicating the presence of weak interactions between 2M2P and AN/PN/BN molecules. The variations of VaE, VfE, βTE, aE and πiE values with composition indicate that the interactions in these mixtures follow the order:AN
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| Keywords: | 2-methyl-2-propanol homologous nitriles excess properties molecular interactions scaled particle theory |
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