Esterification of carboxylic acids with alkyl halides using imidazolium based dicationic ionic liquids containing bis-trifluoromethane sulfonimide anions at room temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 26197-26208 ◽  
Author(s):  
Arvind H. Jadhav ◽  
Kyuyoung Lee ◽  
Sangho Koo ◽  
Jeong Gil Seo
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Ethylene Glycol ◽  
Physicochemical Properties ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Alkyl Halides ◽  
Dicationic Ionic Liquids ◽  
Anionic Part

Task-specific RTILs of symmetrical N-methylimidazolium rings linked to an oligo (ethylene glycol) chain (cationic part) and bis-trifluoromethane sulfonimide (anionic part) were synthesized, and the physicochemical properties with catalytic activity were determined.

Physicochemical properties of branched-chain dicationic ionic liquids

2018 ◽  
Vol 256 ◽  
pp. 247-255 ◽  
Author(s):  
Mohsen Talebi ◽  
Rahul A. Patil ◽  
Daniel W. Armstrong
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Dicationic Ionic Liquids ◽  
Branched Chain

scholarly journals Practical Determination of the Solubility Parameters of 1-Alkyl-3-methylimidazolium Bromide ([CnC1im]Br, n = 5, 6, 7, 8) Ionic Liquids by Inverse Gas Chromatography and the Hansen Solubility Parameter

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1346 ◽  
Author(s):  
Qiao-Na Zhu ◽  
Qiang Wang ◽  
Yan-Biao Hu ◽  
Xawkat Abliz
Keyword(s):  
Gas Chromatography ◽  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Solubility Parameter ◽  
Room Temperature ◽  
Inverse Gas Chromatography ◽  
Retention Volume ◽  
Solubility Parameters ◽  
Hansen Solubility Parameter ◽  
Hansen Solubility

The physicochemical properties of four 1-alkyl-3-methylimidazolium bromide ([CnC1im]Br, n = 5, 6, 7, 8) ionic liquids (ILs) were investigated in this work by using inverse gas chromatography (IGC) from 303.15 K to 343.15 K. Twenty-eight organic solvents were used to obtain the physicochemical properties between each IL and solvent via the IGC method, including the specific retention volume and the Flory–Huggins interaction parameter. The Hildebrand solubility parameters of the four [CnC1im]Br ILs were determined by linear extrapolation to be δ 2 ( [ C 5 C 1 im ] Br ) = 25.78 (J·cm−3)0.5, δ 2 ( [ C 6 C 1 im ] Br ) = 25.38 (J·cm−3)0.5, δ 2 ( [ C 7 C 1 im ] Br ) =24.78 (J·cm−3)0.5 and δ 2 ( [ C 8 C 1 im ] Br ) = 24.23 (J·cm−3)0.5 at room temperature (298.15 K). At the same time, the Hansen solubility parameters of the four [CnC1im]Br ILs were simulated by using the Hansen Solubility Parameter in Practice (HSPiP) at room temperature (298.15 K). The results were as follows: δ t ( [ C 5 C 1 im ] Br ) = 25.86 (J·cm−3)0.5, δ t ( [ C 6 C 1 im ] Br ) = 25.39 (J·cm−3)0.5, δ t ( [ C 7 C 1 im ] Br ) = 24.81 (J·cm−3)0.5 and δ t ( [ C 8 C 1 im ] Br ) = 24.33 (J·cm−3)0.5. These values were slightly higher than those obtained by the IGC method, but they only exhibited small errors, covering a range of 0.01 to 0.1 (J·cm−3)0.5. In addition, the miscibility between the IL and the probe was evaluated by IGC, and it exhibited a basic agreement with the HSPiP. This study confirms that the combination of the two methods can accurately calculate solubility parameters and select solvents.

scholarly journals Carbon-Supported Fe Catalysts forCO2Electroreduction to High-Added Value Products: A DEMS Study: Effect of the Functionalization of the Support

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
S. Pérez-Rodríguez ◽  
G. García ◽  
L. Calvillo ◽  
V. Celorrio ◽  
E. Pastor ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Glycol ◽  
Surface Chemistry ◽  
Physicochemical Properties ◽  
Electrochemical Properties ◽  
Textural Properties ◽  
Carbon Support ◽  
Product Distribution ◽  
Added Value ◽  
Fe Catalysts

Vulcan XC-72R-supported Fe catalysts have been synthesised for the electroreduction of CO2to high-added value products. Catalysts were obtained by the polyol method, using ethylene glycol as solvent and reducing agent. Prior to the metal deposition, Vulcan was subjected to different oxidation treatments in order to modify its surface chemistry and study its influence on the physicochemical and electrochemical properties of the catalysts, as well as on the product distribution. The oxidation treatments of the supports modify their textural properties, but do not affect significantly the physicochemical properties of catalysts. However, DEMS studies showed that the carbon support degradation, the distribution of products, and the catalytic activity toward the CO2electroreduction reaction depend significantly on the surface chemistry of the carbon support.

Physicochemical Properties of Tungstate-Based Room-Temperature Ionic Liquids

2010 ◽  
Vol 157 (9) ◽  
pp. F124 ◽  
Author(s):  
Yunxiang Qiao ◽  
Jun Hu ◽  
Huan Li ◽  
Li Hua ◽  
Yu Hu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids

The effects of the position of the ether oxygen atom in pyrrolidinium-based room temperature ionic liquids on their physicochemical properties

2020 ◽  
Vol 22 (35) ◽  
pp. 19480-19491
Author(s):  
Kazuki Yoshii ◽  
Takuya Uto ◽  
Naoki Tachikawa ◽  
Yasushi Katayama
Keyword(s):  
Ionic Liquids ◽  
Oxygen Atom ◽  
Physicochemical Properties ◽  
Room Temperature ◽  
Experimental Approach ◽  
Position Effect ◽  
Room Temperature Ionic Liquids ◽  
Ether Oxygen Atom ◽  
Ether Oxygen

A joint computational and experimental approach uncovered that the position effect of the ether oxygen atom in pyrrolidinium-based room temperature ionic liquids on the physicochemical properties.

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