The surface tension, density and refractive index of amino acid ionic liquids: [C3mim][Gly] and [C4mim][Gly]

2012 ◽  
Vol 54 ◽  
pp. 352-357 ◽  
Author(s):  
Jing Tong ◽  
Mei Hong ◽  
Yan Chen ◽  
Hui Wang ◽  
Wei Guan ◽  
...  
Keyword(s):  
Surface Tension ◽  
Refractive Index ◽  
Ionic Liquids ◽  
Amino Acid

Surface tension and refractive index of pure and water-saturated tetradecyltrihexylphosphonium-based ionic liquids

2013 ◽  
Vol 57 ◽  
pp. 372-379 ◽  
Author(s):  
Hugo F.D. Almeida ◽  
José A. Lopes-da-Silva ◽  
Mara G. Freire ◽  
João A.P. Coutinho
Keyword(s):  
Surface Tension ◽  
Refractive Index ◽  
Ionic Liquids ◽  
Water Saturated

scholarly journals Influence of Small Quantities of Water on the Physical Properties of Alkylammonium Nitrate Ionic Liquids

2021 ◽  
Vol 22 (14) ◽  
pp. 7334
Author(s):  
David Ausín ◽  
Juan J. Parajó ◽  
José L. Trenzado ◽  
Luis M. Varela ◽  
Oscar Cabeza ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Refractive Index ◽  
Ionic Liquids ◽  
Physical Properties ◽  
Transport Processes ◽  
Average Percentage ◽  
Wide Range ◽  
Ethylammonium Nitrate ◽  
Potential Applications

This paper presents a comprehensive study of two alkylammonium nitrate ionic liquids. As part of this family of materials, mainly ethylammonium nitrate (EAN) and also propylammonium nitrate (PAN) have attracted a great deal of attention during the last decades due to their potential applications in many fields. Although there have been numerous publications focused on the measurement of their physical properties, a great dispersion can be observed in the results obtained for the same magnitude. One of the critical points to be taken into account in their physical characterization is their water content. Thus, the main objective of this work was to determine the degree of influence of the presence of small quantities of water in EAN and PAN on the measurement of density, viscosity, electrical conductivity, refractive index and surface tension. For this purpose, the first three properties were determined in samples of EAN and PAN with water contents below 30,000 ppm in a wide range of temperatures, between 5 and 95 °C, while the last two were obtained at 25 °C. As a result of this study, it has been concluded that the presence of water is critical in those physical properties that involve mass or charge transport processes, resulting in the finding that the absolute value of the average percentage change in both viscosity and electrical conductivity is above 40%. Meanwhile, refractive index (≤0.3%), density (≤0.5%) and surface tension (≤2%) present much less significant changes.

Cholinium-amino acid based ionic liquids: a new method of synthesis and physico-chemical characterization

2015 ◽  
Vol 17 (32) ◽  
pp. 20687-20698 ◽  
Author(s):  
Serena De Santis ◽  
Giancarlo Masci ◽  
Francesco Casciotta ◽  
Ruggero Caminiti ◽  
Eleonora Scarpellini ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Room Temperature ◽  
Chemical Characterization ◽  
New Method ◽  
Room Temperature Ionic Liquids ◽  
Synthetic Method ◽  
Chemical Structures ◽  
Physico Chemical ◽  
Wide Range

Fourteen cholinium-amino acid based room temperature ionic liquids were prepared using a cleaner synthetic method. Chemicophysical properties were well correlated with the wide range of amino acid chemical structures.

scholarly journals Cholinium amino acid-based ionic liquids

2021 ◽  
Author(s):  
Andrea Le Donne ◽  
Enrico Bodo
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Computational Chemistry ◽  
Special Class ◽  
State Of The Art ◽  
Short Review ◽  
Research Activity ◽  
Intensive Research ◽  
Low Toxicity ◽  
Molecular Components

AbstractBoosted by the simplicity of their synthesis and low toxicity, cholinium and amino acid-based ionic liquids have attracted the attention of researchers in many different fields ranging from computational chemistry to electrochemistry and medicine. Among the uncountable IL variations, these substances occupy a space on their own due to their exceptional biocompatibility that stems from being entirely made by metabolic molecular components. These substances have undergone a rather intensive research activity because of the possibility of using them as greener replacements for traditional ionic liquids. We present here a short review in the attempt to provide a compendium of the state-of-the-art scientific research about this special class of ionic liquids based on the combination of amino acid anions and cholinium cations.

scholarly journals Cover Picture: New Insights into CO2 Absorption Mechanisms with Amino-Acid Ionic Liquids (ChemSusChem 8/2016)

ChemSusChem ◽  
2016 ◽  
Vol 9 (8) ◽  
pp. 763-763
Author(s):  
Qiwei Yang ◽  
Zhiping Wang ◽  
Zongbi Bao ◽  
Zhiguo Zhang ◽  
Yiwen Yang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Co2 Absorption
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