Determination of the Enthalpy of Vaporization and Prediction of Surface Tension for Ionic Liquid 1-Alkyl-3-methylimidazolium Propionate [Cnmim][Pro](n = 4, 5, 6)

2014 ◽  
Vol 118 (45) ◽  
pp. 12972-12978 ◽  
Author(s):  
Jing Tong ◽  
Hong-Xu Yang ◽  
Ru-Jing Liu ◽  
Chi Li ◽  
Li-Xin Xia ◽  
...  
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Enthalpy Of Vaporization

Study on Surface Tension and Displacement Efficiency of Ionic Liquid Surfactants Containing Amine Functional Groups

2014 ◽  
Vol 484-485 ◽  
pp. 66-69
Author(s):  
Xiu Li Zhao ◽  
Chang Bao Zhang ◽  
Cheng Chen ◽  
Guo Qiao Li ◽  
Da Liu
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Functional Groups ◽  
Water Flooding ◽  
Displacement Efficiency ◽  
Oil Displacement ◽  
Wave Numbers ◽  
Infrared Spectrometer

Description is given to preparation of three ionic liquid surfactants containing amine functional groups, characterization of their functional groups using the infrared spectrometer, determination of their surface tension and the oil displacement test in this paper to investigate the effect of alkane branch chains with different carbon numbers on the surface tension and the displacement efficiency. The result shows that, the surfactants exhibit the structural characteristic of the ionic liquid as the characteristic absorption peaks occur on C-N and C-H of the imidazole rings at the wave numbers of 1338cm-1, 1234cm-1, 1465cm-1 and 3142cm-1, respectively. The surface tension isothermal curves and the oil displacement test proved that the ionic liquid imidazole surfactants with shorter-chain groups are more active on surface, with the minimal surface tension up to 32.5 mN/m, and led to higher displacement efficiency, increasing by 3.3% at the concentration of 1000mg/L compared with the water flooding.

Tungsten Ionic Liquid: Synthesis and Physicochemical Property

2014 ◽  
Vol 665 ◽  
pp. 237-240
Author(s):  
Qi Yang ◽  
Qiang Yan ◽  
Yun Qin Yang ◽  
Han Wang ◽  
Da Wei Fang ◽  
...  
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Physicochemical Property ◽  
Boiling Point ◽  
Enthalpy Of Vaporization ◽  
Molar Enthalpy ◽  
Normal Boiling Point ◽  
Temperature Range

An tungstate ionic liquid (IL) 2-(1-propyl-3-methyl-imidazolium) ([C3mim]2[WO4]), was prepared. The density and surface tension of the IL were determined in the temperature range of (293.15 to 343.15) K. Using Kabo’s method and Rebelo’s method, the molar enthalpy of vaporization of the IL, ΔlgHm0(298 K), at 298 K and, ΔlgHm0(Tb), at hypothetical normal boiling point was estimated, respectively.

Benchmark Values: Thermochemistry of the Ionic Liquid [C4Py][Cl]

2012 ◽  
Vol 65 (11) ◽  
pp. 1487 ◽  
Author(s):  
Sergey P. Verevkin ◽  
Dzmitry H. Zaitsau ◽  
Vladimir N. Emel'yanenko ◽  
Ricardas V. Ralys ◽  
Christoph Schick ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Md Simulations ◽  
Enthalpy Of Vaporization ◽  
Gravimetric Analysis ◽  
Butyl Chloride ◽  
Reaction Enthalpy ◽  
Scanning Calorimetry ◽  
Indirect Technique ◽  
Isothermal Mass

Differential scanning calorimetry (DSC) was used for the determination of the reaction enthalpy of the synthesis of the ionic liquid [C4Py][Cl] from pyridine and butyl chloride. A combination of DSC results with quantum chemical calculations presents an indirect technique to obtain enthalpy of vaporization of [C4Py][Cl]. In order to ascertain this indirect value, we used thermal gravimetric analysis (TGA) to derive enthalpy of vaporization directly from the isothermal mass-loss measurements. This new procedure was additionally validated with molecular dynamics (MD) simulations.

Automation of selected brazes' dynamic properties in high-temperatures' measurement process

2013 ◽  
Vol 18 (2-3) ◽  
pp. 33-41
Author(s):  
Dominik Sankowski ◽  
Marcin Bakala ◽  
Rafał Wojciechowski
Keyword(s):  
Surface Tension ◽  
High Temperatures ◽  
Dynamic Properties ◽  
Automatic Measurement ◽  
Measurement Methodology ◽  
Joining Process ◽  
Wetting Force ◽  
Research Grant

Abstract The good quality of several manufactured components frequently depends on solidliquid interactions existing during processing. Nowadays, the research in material engineering focuses also on modern, automatic measurement methods of joining process properties, i.a. wetting force and surface tension, which allows for quantitative determination of above mentioned parameters. In the paper, the brazes’ dynamic properties in high-temperatures’ measurement methodology and the stand for automatic determination of braze’s properties, constructed and implmented within the research grant nr KBN N N519 441 839 - An integrated platform for automatic measurement of wettability and surface tension of solders at high temperatures, are widely described

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