scholarly journals Thermophysical Properties of 1-Octyl-3-Methylimidazolium Acetate with Organic Solvents

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Fuxin Yang ◽  
Peng Feng
Keyword(s):  
Binary Mixtures ◽  
Organic Solvents ◽  
Thermophysical Properties ◽  
Normal Pressure ◽  
High Viscosity ◽  
Excess Properties ◽  
Hard Sphere Model ◽  
Viscosity Behavior ◽  
Temperature Ranges ◽  
Pure Substances

Ionic liquid (IL) usually possesses high viscosity. In this work, the selected organic solvents, namely, dimethyl sulfoxide, N,N-dimethylacetamide, and N,N-dimethylformamide, were used as the diluents to lower IL viscosity. The thermophysical properties of the densities and viscosities for the binary mixtures of IL (i.e., 1-octyl-3-methylimidazolium acetate) with solvents were studied at normal pressure in the temperature ranges of 303.15 K to 348.15 K. The effects of the organic solvents on lowering IL viscosity were quantitatively evaluated. The excess properties of the mixtures were calculated to analyze the interactions between IL and solvents. The hard-sphere model was employed to reproduce the viscosity behavior of the pure substances and binary mixtures.

scholarly journals Densities and Viscosities of Ionic Liquid with Organic Solvents

2020 ◽  
Vol 10 (23) ◽  
pp. 8342
Author(s):  
Fuxin Yang ◽  
Peng Feng
Keyword(s):  
Ionic Liquid ◽  
Thermophysical Properties ◽  
Atmospheric Pressure ◽  
Chemical Structure ◽  
Excess Molar Volumes ◽  
High Viscosity ◽  
Chemical Processes ◽  
Capillary Viscometer ◽  
Hard Sphere Model ◽  
Derived Properties

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.

Prediction and correlation of viscosity of binary mixtures of ionic liquids with organic solvents

2014 ◽  
Vol 197 ◽  
pp. 1-6 ◽  
Author(s):  
Divna M. Bajić ◽  
Slobodan P. Šerbanović ◽  
Emila M. Živković ◽  
Jovan Jovanović ◽  
Mirjana Lj. Kijevčanin
Keyword(s):  
Ionic Liquids ◽  
Binary Mixtures ◽  
Organic Solvents

Study on physicochemical and excess properties of [HEMIM][Ala] with DMSO/H2O binary mixtures

2021 ◽  
pp. 117491
Author(s):  
Yue Zhao ◽  
Chun Guo ◽  
Yuao Li ◽  
Jian Wang ◽  
Jing Tong
Keyword(s):  
Binary Mixtures ◽  
Excess Properties

Measurement and prediction of thermophysical properties of binary mixtures of dicyclopentadiene with methylcyclohexane, toluene, and p-xylene

2020 ◽  
Vol 685 ◽  
pp. 178536 ◽  
Author(s):  
Ahmed Amin Touazi ◽  
Saéda Didaoui ◽  
Kamel Khimeche ◽  
Mokhtar Benziane
Keyword(s):  
Binary Mixtures ◽  
Thermophysical Properties
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