Viscosity, Electrical Conductivity, Density and Surface Tension of Methyltriphenylphosphonium Carboxylate Ionic Liquids

2019 ◽  
Vol 92 (3) ◽  
pp. 578-584
Author(s):  
Tao Geng ◽  
Shengfu Duan ◽  
Yajie Jiang ◽  
Hongbin Ju ◽  
Yakui Wang
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Ionic Liquids

Taylor cones of ionic liquids from capillary tubes as sources of pure ions: The role of surface tension and electrical conductivity

2007 ◽  
Vol 102 (6) ◽  
pp. 064913 ◽  
Author(s):  
D. Garoz ◽  
C. Bueno ◽  
C. Larriba ◽  
S. Castro ◽  
I. Romero-Sanz ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Ionic Liquids ◽  
Capillary Tubes

Taylor Cones of Ionic Liquids as Ion Sources: The Role of Electrical Conductivity and Surface Tension

2007 ◽  
pp. 308-319 ◽  
Author(s):  
C. Larriba ◽  
D. Garoz ◽  
C. Bueno ◽  
I. Romero-Sanz ◽  
S. Castro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Ionic Liquids ◽  
Ion Sources

Properties of Acetamide-Alanine Eutectic Ionic Liquid and its Application in Soil Heavy Metal Cd2+ Remediation

2020 ◽  
Vol 842 ◽  
pp. 115-120
Author(s):  
Bao You Liu ◽  
Feng Li ◽  
Jie Tian ◽  
Hui Long Yang
Keyword(s):  
Aqueous Solution ◽  
Electrical Conductivity ◽  
Heavy Metal ◽  
Surface Tension ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Extraction Efficiency ◽  
Soil Heavy Metal ◽  
Acid Aqueous Solution ◽  
Heavy Metal Cd

In order to explore the feasibility of a class of eutectic ionic liquids in soil heavy metal repair problems. The acetamide-alanine eutectic ionic liquid was prepared and its properties of density, viscosity, surface tension and electrical conductivity were measured, and it’s application effect of Cd2+ extraction in soil was studied. The results showed that the extraction amount of Cd2+ in soil by the acetamide-alanine eutectic ionic liquid with a concentration of 0.6 mol/L reached the maximum of 99.67%. The physical properties of a melamine-alanine eutectic ionic liquid having a concentration of 0.6 mol/L at a temperature range of 303.15 K-343.15 K were determined. The 0.6 mol/L acetamide-alanine eutectic ionic liquid was compared with the ionic liquid and the related organic acid aqueous solution prepared under the same conditions, and the acetamide-alanine eutectic prepared by the experiment was found to be eutectic. The ionic liquid has better extraction efficiency for heavy metal Cd2+ under the same conditions, and is a good soil heavy metal extractant.

ChemInform Abstract: Taylor Cones of Ionic Liquids as Ion Sources: The Role of Electrical Conductivity and Surface Tension

ChemInform ◽  
2008 ◽  
Vol 39 (42) ◽  
Author(s):  
C. Larriba ◽  
D. Garoz ◽  
C. Bueno ◽  
I. Romero-Sanz ◽  
S. Castro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Ionic Liquids ◽  
Ion Sources

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.

scholarly journals A group contribution-based prediction method for the electrical conductivity of ionic liquids

2020 ◽  
Vol 509 ◽  
pp. 112462
Author(s):  
Yuqiu Chen ◽  
Yingjun Cai ◽  
Kaj Thomsen ◽  
Georgios M. Kontogeorgis ◽  
John M. Woodley
Keyword(s):  
Electrical Conductivity ◽  
Ionic Liquids ◽  
Prediction Method ◽  
Group Contribution

Surface tension measurements with validated accuracy for four 1-alkyl-3-methylimidazolium based ionic liquids

2010 ◽  
Vol 42 (3) ◽  
pp. 323-329 ◽  
Author(s):  
Jaroslav Klomfar ◽  
Monika Součková ◽  
Jaroslav Pátek
Keyword(s):  
Surface Tension ◽  
Ionic Liquids

scholarly journals Adjuvants plus phytosanitary products and the effects on the physical-chemical properties of the spray liquids

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Heli Heros Teodoro de Assunção ◽  
Saulo Felipe Brockes Campos ◽  
Luciana Alves Sousa ◽  
Ernane Miranda Lemes ◽  
Cesar Henrique Souza Zandonadi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Surface Tension ◽  
Propionic Acid ◽  
Dynamic Viscosity ◽  
Chemical Properties ◽  
Lack Of Information ◽  
Application Rates ◽  
Biological Effectiveness ◽  
Physical And Chemical ◽  
Phytosanitary Products

The frequent tank mixing of phytosanitary products, adjuvants, and foliar fertilizers highlights the lack of information which sustains decisions about what products can be mixed for spray application. Thus, the aim of this study was to evaluate the physical and chemical characteristics of fungicides, herbicides, and insecticides in combination with some adjuvants on the Brazilian market. The experimental design was completely randomized and spray mixes of the phytosanitary products: fungicide (azoxystrobin+benzovindiflupir), herbicide (diamônio salt of N-(phosponomethyl)) or insecticide (fenpropathrin) were evaluated in combination with adjuvants (mineral oil base, foliar fertilizer or lecithin + propionic acid), and in two application rates (95 and 52 L ha-1); all with four replications. Surface tension, electrical conductivity, pH, dynamic viscosity and density of spray mixes were evaluated. The adjuvants presented characteristics capable of significantly altering the physicochemical properties of the phytosanitary spray mixes, and thus, alter the biological effectiveness and efficiency of the spray applications. However, its effects are also dependent on the phytosanitary product added to the spray mix, which makes general recommendations a difficult task. The greatest pH reduction, as well as the greatest increase in electrical conductivity, were caused by the adjuvant lecithin + propionic acid. All phytosanitary products and adjuvants studied, associated or not, resulted in a reduction in the surface tension of the spray mix in relation to water. The magnitude of change of density and dynamic viscosity promoted by adjuvants was lower than the other characteristics evaluated.

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