Experimental studies on volumetric and viscometric properties of binary and ternary mixtures of N,N-dimethylacetamide, N-methylformamide and propane-1,2-diol at different temperatures

Zarei, Hosseinali; Golroudbari, Sajad Akbari; Behroozi, Mahboobe

doi:10.1016/j.molliq.2013.07.002

Cited by 51 publications

(24 citation statements)

References 18 publications

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“…In the present study the viscosity coefficients have been transformed into their decimal logarithm and entered into the group-additivity calculation as log(η). The main sources of experimental viscosity data have been the collective papers of Suzuki et al [5,7] and Katritzky et al [6], supplemented by more recently published experimental results for alkanes [11,12,13,14], haloalkanes [15,16], alkanols [17,18,19,20], alkylamines [21,22,23,24], aminoalcohols [25,26,27], ethers [28,29], aminoethers [30], acetals [31], ketones [32], esters [33,34,35,36,37,38,39,40,41,42,43], hydroxyesters [44,45], carbonate esters [46], and amides [47,48,49,50,51,52]. Beyond these, experimental data have been added for compounds with atom groups that have not yet been represented in the parameters table: phosphoric acid esters [53,54,55], phosphoric acid amides [56], siloxanes [57] and in particular ionic liquids [32,58,59,60,61,62,…”

Section: Resultsmentioning

confidence: 99%

Application of a General Computer Algorithm Based on the Group-Additivity Method for the Calculation of Two Molecular Descriptors at Both Ends of Dilution: Liquid Viscosity and Activity Coefficient in Water at Infinite Dilution

Naef

Acree

2017

Molecules

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The application of a commonly used computer algorithm based on the group-additivity method for the calculation of the liquid viscosity coefficient at 293.15 K and the activity coefficient at infinite dilution in water at 298.15 K of organic molecules is presented. The method is based on the complete breakdown of the molecules into their constituting atoms, further subdividing them by their immediate neighborhood. A fast Gauss–Seidel fitting method using experimental data from literature is applied for the calculation of the atom groups’ contributions. Plausibility tests have been carried out on each of the calculations using a ten-fold cross-validation procedure which confirms the excellent predictive quality of the method. The goodness of fit (Q2) and the standard deviation (σ) of the cross-validation calculations for the viscosity coefficient, expressed as log(η), was 0.9728 and 0.11, respectively, for 413 test molecules, and for the activity coefficient log(γ)∞ the corresponding values were 0.9736 and 0.31, respectively, for 621 test compounds. The present approach has proven its versatility in that it enabled the simultaneous evaluation of the liquid viscosity of normal organic compounds as well as of ionic liquids.

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Section: Resultsmentioning

confidence: 99%

Application of a General Computer Algorithm Based on the Group-Additivity Method for the Calculation of Two Molecular Descriptors at Both Ends of Dilution: Liquid Viscosity and Activity Coefficient in Water at Infinite Dilution

Naef

Acree

2017

Molecules

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“…To check the IL viscosity, Equation 7is performed to fit the experimental data and the calculated values are compared with the literature data. Table 9 gives the viscosity data and the deviations for the IL viscosities in this work with the literature data [10,22,23,30,33,43,44]. The viscosity of IL is sensitive to the impurities.…”

Section: Effects Of Organic Solvents On the Viscosities Of Ilmentioning

confidence: 96%

“…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%

“…Moreover, the viscosity values of the organic solvents in this work and those in the literature are compared as shown in Figures S10-S12 (in the Supplementary Material). AARD for DMA is 1.4% [20], 2.6% [22], 0.61% [23], 0.63% [26]. AARD for DMF is 1.29% [51] The relative combined standard uncertainty (uc,r) is uc,r(η) = 0.10.…”

Section: Effects Of Organic Solvents On the Viscosities Of Ilmentioning

confidence: 99%

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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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“…DFM is an aprotic dipolar substance whose liquid structure is determined by the dipole-dipole interactions [1][2][3] and has the potential for use in solvent extraction processes for separating polar organic substances from aqueous media. On the other hand secondary amides (NMF and NEF) are strongly self-associated through hydrogen bonding and dipole-dipole interactions (NMF, µ = 3.86D; NEF, µ = 3.80D at 298.15K) [5][6][7][8][9]. This association is reported to decrease with the size of alkyl group in the amide molecule [6,10].…”

Section: Introductionmentioning

confidence: 99%

Volumetric Properties of (Difurylmethane + an Amide) Binary Mixtures at 293.15K, 298.15K and 303.15 K

Fulele¹

2017

AJPC

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Experimental studies on volumetric and viscometric properties of binary and ternary mixtures of N,N-dimethylacetamide, N-methylformamide and propane-1,2-diol at different temperatures

Cited by 51 publications

References 18 publications

Application of a General Computer Algorithm Based on the Group-Additivity Method for the Calculation of Two Molecular Descriptors at Both Ends of Dilution: Liquid Viscosity and Activity Coefficient in Water at Infinite Dilution

Application of a General Computer Algorithm Based on the Group-Additivity Method for the Calculation of Two Molecular Descriptors at Both Ends of Dilution: Liquid Viscosity and Activity Coefficient in Water at Infinite Dilution

Densities and Viscosities of Ionic Liquid with Organic Solvents

Volumetric Properties of (Difurylmethane + an Amide) Binary Mixtures at 293.15K, 298.15K and 303.15 K

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