JOURNAL OF MOLECULAR LIQUIDS
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2021
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IF 6.165
Mingcheng Li,Chunying Zhu,Taotao Fu,Youguang Ma
In this study, the densities and viscosities of the binary solutions 1-dimethylamino-2-propanol (1DMA2P) + H 2 O, benzylamine (BZA) + H 2 O, 1DMA2P + BZA and ternary solution 1DMA2P + BZA + H 2 O were measured at T = (298.15−333.15) K. Furthermore, the volumetric and the viscometric properties including the excess molar volume, partial molar volume, apparent molar volume, limiting apparent molar volume, viscosity deviation, excess Gibbs energy of activation for viscous fluid and Grunberg-Nissan interaction parameters were obtained in terms of experimental data, respectively. The excess molar volumes of binary and ternary solutions were fitted by the Redlich-Kister equation and Cibulka equation, besides, the viscosity and viscosity deviation of binary solution were correlated by using the Grunberg-Nissan equation and Redlich-Kister equation. Moreover, the intermolecular interactions were analyzed based on the volumetric and viscometric properties of solutions.
研究领域:
物理化学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2012
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IF 2.422
Wu Qian,Yingjie Xu,Hongye Zhu,Chaohong Yu
Densities and viscosities of the pure ionic liquid 1-methylimidazolium acetate ([Mim]Ac) and its binary mixtures with methanol, ethanol, 1-propanol, and 1-butanol were measured at temperature ranging from T = (293.15 to 313.15) K. The thermal expansion coefficient, molecular volume, standard entropy, and lattice energy of [Mim]Ac were deduced from the experimental density results. A simple linear equation was used to correlate the variation of viscosity of [Mim]Ac with temperature. Excess molar volumes V E and viscosity deviations Δ η for the binary mixtures at above mentioned temperature were calculated and fitted to the Redlich–Kister equation with satisfactory results. Excess molar volumes for {[Mim]Ac + 1-butanol} mixture have an S shape, while those for other mixtures have a negative deviation from ideal behaviour over the entire mole fraction range. Viscosity deviations are all negative deviation for {[Mim]Ac + alcohol} mixtures. The results were interpreted in terms of interactions and structural factors of binary mixtures.
研究领域:
物理化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2012
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IF 2.422
Yingjie Xu,Bin Chen,Wu Qian,Haoran Li
Values of the density and viscosity of the pure ionic liquid n -butylammonium nitrate (N4NO 3 ) and its binary mixtures with methanol, ethanol, 1-propanol, and 1-butanol were measured at temperature ranging from T = (293.15 to 313.15) K. The thermal expansion coefficient, molecular volume, standard entropy, and lattice energy of N4NO 3 were deduced from the experimental density results. The temperature dependence of the viscosity of N4NO 3 was fitted to the fluidity equation. Excess molar volumes V E and viscosity deviations Δ η for the binary mixtures were calculated and fitted to the Redlich–Kister equation with satisfactory results. Both excess molar volumes and viscosity deviations show negative deviations for (N4NO 3 + alcohol) mixtures. The effect of the temperature and the size of the alcohol on the excess molar volumes and viscosity deviations are discussed and analysed. Other derived properties, such as the apparent molar volume, partial molar volume, excess partial molar volume, thermal expansion coefficient, and excess thermal expansion coefficient of the above-mentioned systems were also calculated.
研究领域:
物理化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2019
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IF 2.298
Xiaoyi Chen,Shenda Jin,Yitong Dai,Jianzhou Wu,Yongsheng Guo,Qunfang Lei,Wenjun Fang
Densities (ρ) and viscosities (η) for the ternary system of decalin (1) + methylcyclohexane (2) + cyclopentanol (3) and three corresponding binary systems have been measured over the whole composition range at 11 temperature points from 293.15 K to 343.15 K under atmospheric pressure (0.1 MPa). The excess molar volumes (VmE) and viscosity deviations (Δη) of binary systems have been calculated and further fitted with the Redlich–Kister equation, while corresponding physical data of the ternary system have been correlated via the Clibuka, Singh, Nagata-Tamura, and Redlich–Kister equations. The VmE values are negative for the binary system of decalin (1) + methylcyclohexane (2) with a minimum when the moles of the two components are similar. For the system of decalin (1) + cyclopentanol (2), the VmE values are always positive with a maximun at about x1 = 0.6. At the same time, a sigmoid curve can be observed for the system of methylcyclohexane (1) + cyclopentanol (2). The minimum and maximum appear around x1 = 0.2 and x1 = 0.9, respectively. The Δη values of the three binary systems are all negative and the absolute values decrease with increase in temperature. For the ternary system, the VmE values are partially negative and the Δη values are negative over the entire concentration range. The nonideal behaviors of the mixtures are discussed in the perspective of intermolecular interaction and structural effect.
研究领域:
物理化学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2020
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IF 5.065
Yu Dong,Xin Yin,Yapeng Cao,Shufeng Shen
Water-lean absorbent has great potential in energy savings over aqueous amines for CO 2 capture. Measurements on density and viscosity for the ternary systems of monoethanolamine (MEA), 2-(methylamino)ethanol (MAE), 2-(ethylamino)ethanol (EAE) or 2-(butylamino)ethanol (BAE) + 2-butoxyethanol (EGBE) + water have been performed at atmospheric pressure and temperatures from 293.15 to 353.15 K. The total amine concentrations in these systems were held at two constant mass fractions in the range of 30-60 mass%. Excess molar volume ( V E ) and viscosity deviation (Δ η ) of the ternary systems were also derived from the experimental data and correlated with Cibulka parameters with the aid of Redlich-Kister equation to fit the measured ternary properties from their pure components. The addition of water into the binary (amine +EGBE) systems can affect greatly the molecular interactions . The V E values of the ternary blends are found to be negative over the investigated conditions. However, Δ η values are observed to be positive except in the rich (amine + EGBE) concentration region. The variations of V E and Δ η were represented and interpreted with molecular interactions and structural effects.
研究领域:
化学工程
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2019
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IF 2.29
Daofan Ma,Qing Liu,Chunying Zhu,Huisheng Feng,Youguang Ma
The densities and viscosities of binary solutions of (N-methyldiethanolamine + ethanol), (monoethanolamine + ethanol) and (N-methyldiethanolamine + monoethanolamine) as well as ternary solution of (N-methyldiethanolamine + monoethanolamine + ethanol) were measured at T = 293.15 K, 303.15 K, 313.15 K, 323.15 K. The volumetric and viscometric properties, such as the excess molar volume V E , the partial molar volume V ¯ , the partial molar volume at infinite dilution V ¯ ∞ and the viscosity deviation Δ η , were calculated from the experimental densities and viscosities. The excess molar volumes and viscosity deviations of binary and ternary solutions were correlated by the Redlich-Kister equation and the Cibulka’s equation, respectively. The intermolecular interactions in binary and ternary solutions were analysed.
研究领域:
物理化学
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化工热力学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2015
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IF 2.679
Jiayi Chen,Lingxiao Chen,Yingjie Xu
Densities and viscosities of the pure ionic liquid 1,1,3,3-tetramethylguanidine imidazole ([TMG]IM) and its binary mixtures with methanol, ethanol, 1-propanol, and 1-butanol were measured at temperatures from T = (293.15 to 313.15) K. The thermal expansion coefficient, molecular volume, standard entropy, and lattice energy of [TMG]IM were obtained from the experimental density value. The temperature dependence of the viscosity of [TMG]IM was fitted to the fluidity equation. Excess molar volumes V E and viscosity deviations Δ η of the binary mixtures were calculated and fitted to the Redlich–Kister equation with satisfactory results. The result shows that the V E values of the binary mixtures are negative over the whole composition range, while Δ η values have an S-shape deviation. Temperature has little effect on the V E of the systems, but it has significant effect on the Δ η . Furthermore, the absolute values of V E for {[TMG]IM (1) + alcohol (2)} systems at the same temperature decrease with increasing carbon alkyl chain of the primary alcohol. Other derived properties, such as the apparent molar volumes, partial molar volumes, excess partial molar volumes, Gibbs free energy of activation for viscous flow, and excess Gibbs free energy of activation for viscous flow of the above-mentioned systems were also calculated.
研究领域:
物理化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2015
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IF 2.037
Xiaoxing Lu,Di Wu,Dengfeng Ye,Youping Wang,Yongsheng Guo,Wenjun Fang
Two guanidinium-based ionic liquids (ILs), 2-ethyl-1,1,3,3-tetramethylguanidinium bis(trifluoromethylsulfonyl)imide ([TMGEt][NTf2]) and ethyl sulfate ([TMGEt][C2OSO3]) were synthesized and characterized. Experimental densities and viscosities for the binary mixtures of the ILs with ethanol and 1-propanol from (293.15 to 323.15) K were measured over the whole composition range and at the atmospheric pressure of 0.1 MPa. The excess molar volumes (VmE) and the viscosity deviations (Δη) for the binary systems were calculated and fitted with the Redlich–Kister equation. It is found that the density of [TMGEt][NTf2] is much higher than that of [TMGEt][C2OSO3] at the same temperature, while the viscosity of the former with the value of 74.61 mPa·s is only 1/9 of that of the latter at 293.15 K. This indicates that the difference of the anions has a significant influence on the density and viscosity of the ILs with the same guanidinium cation. The addition of ethanol or 1-propanol leads to negative values of VmE and Δη, which result from the efficient packing of the constituents in the binary mixtures and the weakening of anion–cation interactions of the ILs. The partial molar volumes, excess partial molar volumes, Gibbs energy, and excess Gibbs energy of activation for viscous flow of the binary mixtures also have been calculated. It is hoped that the results provide useful information for the fundamental physicochemical properties of the guanidinium-based ILs and their further applications.
研究领域:
物理化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2018
·
IF 2.196
Yitong Dai,Wenqi Zhao,Haiyun Sun,Yongsheng Guo,Wenjun Fang
Densities (ρ) and viscosities (η) of ternary system n-dodecane + bicyclohexyl + n-butanol and three corresponding binary systems, n-dodecane + bicyclohexyl, n-dodecane + n-butanol, and bicyclohexyl + n-butanol, were measured at temperature range from 293.15 to 333.15 K in detail. Densities were obtained using a vibrating-tube densimeter. Viscosities were determined using an automatic microviscometer based on the rolling ball principle. The excess molar volumes (VmE) and the viscosity deviations (Δη) of each mixture were calculated with the measured data. The VmE and Δη values of three binary systems were fitted to the Redlich–Kister equation, and those of the ternary system were fitted to Nagata–Tamura, Singh, Clibuka, and Redlich–Kister semiempirical equations. The VmE values are negative for the binary system of n-dodecane + bicyclohexyl with the minimum at about x = 0.5, while those of binary systems n-dodecane + n-butanol and bicyclohexyl + n-butanol are positive over the entire concentration range. For the ternary system, the VmE values are subtotal positive and the Δη are negative over the entire concentration range. The nonideal behaviors of the mixtures are explained by physical interactions and structural effects between mixture components.
研究领域:
物理化学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2018
·
IF 2.196
Qingshan Liu,Liwei Zhao,Qige Zheng,Lin Mou,Pengfei Zhang
Two hydrophobic ionic liquids (ILs) 1-alkyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([C2mim][NTf2] and [C4mim][NTf2]) were synthesized. The binary mixtures of the two ILs were prepared with dimethyl carbonate (DMC) or diethyl carbonate (DEC) over the entire mole fraction range, respectively. The density and viscosity of the binary mixtures were determined by an automated DMA 5000 M and a Lovis 2000 ME Anton Paar Rotational Stabinger Viscometer at temperatures ranging from 288.15 to 328.15 K. The uncertainties of the density and viscosity are ur(ρ) = 0.00120 and ur(η) = 0.01. The excess molar volumes and viscosity deviations were calculated for the four binary mixtures by the measurement values. The effects of the extension of the alkyl chain of the cation and anion on the above properties are discussed. The effects of the methyl introduction on the cation was also discussed with the literature. The excess molar volumes and viscosity deviations were fitted versus mole fraction according to the Redlich–Kister equation. The thermal expansion coefficients of the systems were calculated according to the density values.
研究领域:
物理化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2021
·
IF 3.178
Dan Li,Yujia Zheng,Jingying Wang,Yan Pang,Meifang Liu
Densities and viscosities of ternary system (1-pentanol + ethylcyclohexane + methyl myristate) and the corresponding binary systems, (1-pentanol + ethylcyclohexane), (1-pentanol + methyl myristate), and (ethylcyclohexane + methyl myristate) were determined at different temperatures from 293.15 to 323.15 K. The experimental data were further employed to calculate excess molar volume ( V m E ) and viscosity deviation (Δ η ). Over the whole composition range, the V m E values show positive deviations from ideal behavior and the Δ η values are negative. The V m E values for the ternary mixtures were also correlated with the corresponding binary data using Cibulka and Redlich–Kister equations, respectively. The experimental data and results provide useful base data for further thermodynamic studies of alcohol–biodiesel–diesel blends.
研究领域:
物理化学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2025
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IF 2.1
Dan Li,Xiazhen Zhang,Xue Meng,Longxia Hao,Yixin Li,Guoqing Sui
The density and dynamic viscosity of the ternary system (dimethyl carbonate + methyl myristate + 1-hexanol) and the related binary mixtures (dimethyl carbonate + methyl myristate), (dimethyl carbonate + 1-hexanol), and (methyl myristate + 1-hexanol) were experimentally determined in the temperature range T = 293.15–323.15 K, which were applied to obtain the excess molar volume (VmE) and deviation in viscosity (Δη) of ternary and its related binary systems. Redlich–Kister, Cibulka, and Singh equations were used to estimate VmE and Δη of ternary mixtures. The VmE consistently exhibited positive values for all studied systems, while the Δη values were negative, which provided data support for the thermodynamic study and application of the biodiesel mixed fuel system.
研究领域:
物理化学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
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