scholarly journals Vapor-liquid equilibrium of the ionic liquid 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate and its mixtures with water

2019 ◽  
Author(s):  
Zachariah Baird ◽  
Petri Uusi-Kyyny ◽  
Ville Alopaeus ◽  
Joanna Witos ◽  
Antti Rantamäki ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Raw Materials ◽  
Stoichiometric Ratio ◽  
Protic Ionic Liquids ◽  
Liquid Equilibrium ◽  
Protic Ionic Liquid ◽  
Vapor Liquid Equilibrium ◽  
Acid And Base ◽  
Vapor Liquid

Ionic liquids have the potential to be used for extracting valuable chemicals from raw materials. These processes often involve water, and after extraction the water, or other chemicals, must be removed from the ionic liquid so it can be reused. To help in designing such processes, we present data on the vapor-liquid equilibrium of the system containing the protic ionic liquid 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate, water, acetic acid, and 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene. Earlier studies have only focused on mixtures of water and an ionic liquid with a stoichiometric ratio of the ions. Here we also investigated mixtures containing an excess of the acid or base component because in real systems with protic ionic liquids the amount of acid and base in the mixture can vary. We modeled the data using both the ePC-SAFT and NRTL models, and we compared the performance of different modeling strategies. We also experimentally determined the vapor composition for a few of the samples, but none of the modeling strategies tested could accurately predict the concentration of the acid and base components in the vapor phase.

Isobaric Vapor–Liquid Equilibrium for 2-Butanone + Ethanol System Containing Different Ionic Liquids at 101.3 kPa

2018 ◽  
Vol 63 (2) ◽  
pp. 380-388 ◽  
Author(s):  
Wenxiu Li ◽  
Xue Chen ◽  
Haiying Yin ◽  
Linhao Li ◽  
Tao Zhang
Keyword(s):  
Ionic Liquids ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Ethanol System ◽  
Vapor Liquid

scholarly journals Effect of Ionicity of Three Protic Ionic Liquids as Neat Lubricants and Lubricant Additives to a Biolubricant

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 713 ◽  
Author(s):  
Hong Guo ◽  
Angela Rina Adukure ◽  
Patricia Iglesias
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Friction And Wear ◽  
Cost Effective ◽  
Lubricant Additive ◽  
Lubricant Additives ◽  
Environmental Damage ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
Wear Process

Friction and wear of sliding surfaces are responsible for important energy losses and negative environmental effects. The use of environmentally friendly and cost-effective protic ionic liquids as neat lubricants and lubricant additives has the potential to increase the efficiency and durability of mechanical components without increasing the environmental damage. In this work, three halogen-free protic ionic liquids with increasing extent of ionicity, 2-hydroxyethylammonium 2-ethylhexanoate, 2-hydroxymethylammonium 2-ethylhexancate, and 2-hydroxydimethylammonium 2-ethylhexanoate, were synthesized and studied as neat lubricants and additives to a biodegradable oil in a steel–steel contact. The results show that the use of any protic ionic liquid as a neat lubricant or lubricant additive reduced friction and wear with respect to the biodegradable oil. The ionic liquid with the lowest ionicity reached the highest wear reduction. The one possessing the highest ionicity presented the poorest friction and wear behaviors as a neat lubricant, probably due to the more ionic nature of this liquid, which promoted tribocorrosion reactions on the steel surface. This ionic liquid performed better as an additive, showing that a small addition of this liquid in a biodegradable oil is enough to form protective layers on steel surfaces. However, it is not enough to accelerate the wear process with detrimental tribocorrosion reactions.

scholarly journals A new microebulliometer for the measurement of the vapor–liquid equilibrium of ionic liquid systems

2013 ◽  
Vol 354 ◽  
pp. 156-165 ◽  
Author(s):  
Pedro J. Carvalho ◽  
Imran Khan ◽  
António Morais ◽  
José F.O. Granjo ◽  
Nuno M.C. Oliveira ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Liquid Systems ◽  
Vapor Liquid

scholarly journals Lyotropic liquid crystal phase behavior of a cationic amphiphile in aqueous and non-stoichiometric protic ionic liquid mixtures

Soft Matter ◽  
2020 ◽  
Vol 16 (41) ◽  
pp. 9456-9470
Author(s):  
Dilek Yalcin ◽  
Calum J. Drummond ◽  
Tamar L. Greaves
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Crystal ◽  
Self Assembly ◽  
Liquid Mixtures ◽  
Lyotropic Liquid Crystal ◽  
Liquid Crystal Phase ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
Cationic Amphiphile

Protic ionic liquids (PILs) are the largest and most tailorable known class of non-aqueous solvents which possess the ability to support amphiphile self-assembly.

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