PρT measurement and PC-SAFT modeling of N,N-dimethyl formamide, N -methyl formamide, N,N-dimethyl acetamide, and ethylenediamine from T = (293.15–423.15) K and pressures up to 35 MPa

Zarei, Hosseinali; Keley, Vahid

doi:10.1016/j.fluid.2016.08.014

Cited by 11 publications

(10 citation statements)

References 47 publications

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“…The description of the apparatus and calibration procedure has been explained in detail in our previous work . The repeatability of the pressure measurement was investigated by comparing two different pressure measurements . The relative uncertainty of the pressure measurement was u r ( p ) = 3 × 10 –3 .…”

Section: Methodsmentioning

confidence: 99%

Experimental High-Temperature, High-Pressure Density Measurement and Perturbed-Chain Statistical Associating Fluid Theory Modeling of Dimethyl Sulfoxide, Isoamyl Acetate, and Benzyl Alcohol

2019

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Experimental high-temperature, high-pressure (HTHP) density of three solvents including dimethyl sulfoxide, benzyl alcohol, and isoamyl acetate was measured at temperatures of 293.15–473.15 K and pressures up to 35–37.5 MPa. The density was measured with an Anton Paar density meter (DMA HP) at 20 K and 2.5 MPa intervals. The calibration fluids were water and benzene. The combined expanded uncertainty of density taking into account the device specification and the impurities of the materials was 1 kg·m–3 (0.95 level of confidence). The experimental density data were correlated with the Tait and new modified Tait equations. The thermal expansion coefficient (α p ) and isothermal compressibility (κ T ) were calculated with the new modified Tait equations. Moreover, the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state was used to model the density data at HTHP. In most cases, the PC-SAFT parameters are obtained from saturated vapor pressure and liquid phase density; however, these parameters were calculated from the density at HTHP in the present study. Regarding these parameters, thermodynamic properties such as the thermal expansion coefficient (α p ), isothermal compressibility (κ T ), isobaric heat capacity (C P ), and speed of sound (u) were calculated. Acceptable agreement between the results with experimental data demonstrated the accuracy of modeling with the obtained parameters.

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Section: Methodsmentioning

confidence: 99%

Experimental High-Temperature, High-Pressure Density Measurement and Perturbed-Chain Statistical Associating Fluid Theory Modeling of Dimethyl Sulfoxide, Isoamyl Acetate, and Benzyl Alcohol

2019

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“…Moreover, in Figures S1-S3 (in the Supplementary Material), the densities of the solvents in this work are compared with the literature data. AARD for DMA is 0.04% [19], 0.08% [20], 0.06% [21], 0.05% [22], 0.88% [23], 0.07% [24], 0.07% [25], 0.06% [26], 0.15% [27], 0.03% [28]. AARD for DMF is 0.02% [29], 0.07% [20], 0.16% [30], 0.10% [19], 0.09% [31], 0.19% [32], 0.18% [33], 0.14% [34], 0.09% [27], 0.09% [35], 0.04% [28], 0.17% [36], 0.07% [37], 0.14% [38], 0.03% [39], 0.13% [40].…”

Section: Experimental Density Datamentioning

confidence: 99%

“…AARD for DMA is 0.04% [19], 0.08% [20], 0.06% [21], 0.05% [22], 0.88% [23], 0.07% [24], 0.07% [25], 0.06% [26], 0.15% [27], 0.03% [28]. AARD for DMF is 0.02% [29], 0.07% [20], 0.16% [30], 0.10% [19], 0.09% [31], 0.19% [32], 0.18% [33], 0.14% [34], 0.09% [27], 0.09% [35], 0.04% [28], 0.17% [36], 0.07% [37], 0.14% [38], 0.03% [39], 0.13% [40]. AARD for DMSO is 0.14% [41], 0.02% [42], 0.02% [43], 0.01% [44], 0.02% [45], 0.01% [18], 0.03% [33], 0.08% [35], 0.02% [46], 0.05% [47], 0.05% [48], 0.02% [37].…”

Section: Experimental Density Datamentioning

confidence: 99%

Densities and Viscosities of Ionic Liquid with Organic Solvents

Yang

Feng

2020

Applied Sciences

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The ionic liquid (IL) of 1-hexyl-3-methylimidazolium acetate is widely used in chemical and bio-chemical processes. In this work, due to the high viscosity of IL, the promising chemicals (i.e., N, N-dimethylacetamide, N, N-dimethylformamide, and dimethyl sulfoxide) were selected as the additives to lower IL viscosity. The thermophysical properties of density and viscosity for IL with solvents were measured using a digital vibrating U-tube densimeter and an Ubbelohde capillary viscometer from 303.15 to 338.15 K at atmospheric pressure (0.0967 MPa), respectively. The influences of the solvents on the thermophysical properties of ionic liquid were quantitatively studied. Furthermore, based on the measurement values, the derived properties of excess molar volumes, thermal expansion coefficient, and the energy barrier were calculated, and the results showed that the mixture composition had great impact on excess volume change and viscosity. The hard-sphere model was employed to reproduce the viscosity. The infrared spectroscopy was performed to study the chemical structure to further understand the interactions between IL and the solvents.

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“…Generally, PC-SAFT molecular parameters are obtained from vapor pressure and liquid density data . In the lack of vapor pressure and liquid density data, the PC-SAFT parameters can be calculated from P ρ T data. , In this work PC-SAFT parameters for ILs have been selected from the reported data by Chen et al and Curras et al Also, the PC-SAFT parameters of DMF and DMA are calculated from the experimental P ρ T data obtained in our laboratory …”

Section: Pc-saft Modelingmentioning

confidence: 99%

“…18,52 In this work PC-SAFT parameters for ILs have been selected from the reported data by Chen et al 18 and Curras et al 11 Also, the PC-SAFT parameters of DMF and DMA are calculated from the experimental PρT data obtained in our laboratory. 53 The binary interaction parameters, k ij , included in the PC-SAFT equation were determined by minimizing the following objective function (OF)…”

Section: Pc-saft Modelingmentioning

confidence: 99%

Density and Speed of Sound of Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate,N,N-Dimethylformamide, andN,N-Dimethylacetamide at Temperature Range of 293.15–343.15 K: Measurement and PC-SAFT Modeling

Zarei

Keley

2017

J. Chem. Eng. Data

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Density, ρ, and speed of sound, u, were measured for two binary mixtures, 1-ethyl-3-methylimidazolium tetrafluoroborate (1) + N,N-dimethylformamide (2) and 1-ethyl-3-methylimidazolium tetrafluoroborate (1) + N,N-dimethylacetamide (2), over the entire range of compositions at T = 293.15–343.15 K in 5 K intervals using an Anton Paar density and sound velocity analyzer (DSA 5000). Also excess molar volume, V m E, isentropic compressibility, k s, and isentropic compressibility deviation, Δk s, were calculated. For these two binary mixtures, the V m E values were negative in x 1 = 0.1–0.8, they were positive in x 1 ≥ 0.8, and they became more negative with increase in the temperature from 293.15 to 343.15 K. For both systems, the most negative V m E values were observed in the region of x 1 = 0.5. The V m E values were fitted to the Redlich–Kister polynomial equation. The perturbed chain statistical associating fluid theory (PC-SAFT) was also employed in order to correlate the densities of the binary mixtures at the temperature range of 293.15–343.15 K. The results obtained were in good agreement with the experimental data.

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PρT measurement and PC-SAFT modeling of N,N-dimethyl formamide, N -methyl formamide, N,N-dimethyl acetamide, and ethylenediamine from T = (293.15–423.15) K and pressures up to 35 MPa

Cited by 11 publications

References 47 publications

Experimental High-Temperature, High-Pressure Density Measurement and Perturbed-Chain Statistical Associating Fluid Theory Modeling of Dimethyl Sulfoxide, Isoamyl Acetate, and Benzyl Alcohol

Experimental High-Temperature, High-Pressure Density Measurement and Perturbed-Chain Statistical Associating Fluid Theory Modeling of Dimethyl Sulfoxide, Isoamyl Acetate, and Benzyl Alcohol

Densities and Viscosities of Ionic Liquid with Organic Solvents

Density and Speed of Sound of Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate,N,N-Dimethylformamide, andN,N-Dimethylacetamide at Temperature Range of 293.15–343.15 K: Measurement and PC-SAFT Modeling

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