Aggregation Behavior of Pyrrolidinium Ionic Liquid Surfactants in −OH-Functionalized Ammonium-Based Protic Ionic Liquids

2019 ◽  
Vol 64 (11) ◽  
pp. 4708-4716
Author(s):  
Yuanchao Pei ◽  
Qiuping Lu ◽  
Yajuan Niu ◽  
Yang Zhao ◽  
Yuling Zhao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Aggregation Behavior ◽  
Protic Ionic Liquids ◽  
Pyrrolidinium Ionic Liquid

scholarly journals Solvent-free Knoevenagel reaction catalysed by reusable pyrrolidinium base protic ionic liquids (PyrrILs): synthesis of long-chain alkylidenes

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3214-3221 ◽  
Author(s):  
R. C. M. Alves Sobrinho ◽  
P. M. de Oliveira ◽  
C. R. Montes D'Oca ◽  
D. Russowsky ◽  
M. G. Montes D'Oca
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Solvent Free ◽  
Knoevenagel Reaction ◽  
Protic Ionic Liquids ◽  
Knoevenagel Condensation Reaction ◽  
Pyrrolidinium Ionic Liquid ◽  
Long Chain

In this work, an efficient and reusable pyrrolidinium ionic liquid (PyrrIL) catalysis system was developed and used in a Knoevenagel condensation reaction of long-chain aldehydes with several 1,3-dicarbonyl compounds.

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.

High throughput approach to investigating ternary solvents of aqueous non-stoichiometric protic ionic liquids

2019 ◽  
Vol 21 (13) ◽  
pp. 6810-6827 ◽  
Author(s):  
Dilek Yalcin ◽  
Calum J. Drummond ◽  
Tamar L. Greaves
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
High Throughput ◽  
Self Assembly ◽  
Protic Ionic Liquids ◽  
Systematic Data ◽  
Solvent Systems ◽  
Compositional Space

High throughput methods were used to investigate ionic liquid containing solutions to provide systematic data of a broad compositional space. We have principally focused on the surface tension, apparent pH and liquid nanostructure to identify potential self-assembly and protein stabilizing ability of solvent systems.

scholarly journals Design of a combined ionosolv-organosolv biomass fractionation process for biofuel production and high value-added lignin valorisation

2020 ◽  
Vol 22 (15) ◽  
pp. 5161-5178
Author(s):  
Meng Chen ◽  
Francisco Malaret ◽  
Anton E. J. Firth ◽  
Pedro Verdía ◽  
Aida R. Abouelela ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Value Added ◽  
Biofuel Production ◽  
Protic Ionic Liquids ◽  
Fractionation Process ◽  
Biomass Fractionation

IonoSolv pretreatment using protic ionic liquids has shown impressive biomass fractionation performance and ionic liquid recyclability.

Influence of hydrophilic/hydrophobic protic ionic liquids (PILs) on the poly(vinylidene fluoride) (PVDF-ionic liquid) membrane properties

2020 ◽  
Vol 55 (35) ◽  
pp. 16697-16717
Author(s):  
Isabel Vázquez-Fernández ◽  
Adnane Bouzina ◽  
Mohamed Raghibi ◽  
Laure Timperman ◽  
Janick Bigarré ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Membrane ◽  
Vinylidene Fluoride ◽  
Membrane Properties ◽  
Protic Ionic Liquids ◽  
Poly Vinylidene Fluoride

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.

scholarly journals Highly Efficient Biphasic System for the Synthesis of Alkyl Lactates in the Presence of Acidic Ionic Liquids

Catalysts ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 37 ◽  
Author(s):  
Urszula Dorosz ◽  
Natalia Barteczko ◽  
Piotr Latos ◽  
Karol Erfurt ◽  
Ewa Pankalla ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lactic Acid ◽  
Sulphuric Acid ◽  
Catalytic Amount ◽  
Biphasic System ◽  
Protic Ionic Liquids ◽  
Nitrogen Base ◽  
Molar Excess ◽  
Acidic Ionic Liquids

Alkyl lactates are produced from lactic acid via esterification, and are used in the production of plastics, paints, solvents and detergents. In the pursuit of an inexpensive, industry-suitable catalyst for this reaction, the application of protic ionic liquids based on nitrogen base and sulphuric acid is proposed. The ionic liquid was synthesised via a simple reaction of triethylamine and a threefold molar excess of sulphuric acid. Water was added to remove the heat of the reaction. Next, the reaction conditions for the model esterification of 2-ethylhexanol with lactic acid without additional solvent were optimised. Exceptionally mild conditions, i.e., a twofold molar excess of alcohol to lactic acid with the addition of an ionic liquid in a catalytic amount (15 mol%) at 60 °C, resulted in high yields of ethyl and 2-ethylhexyl lactates (96–97%). The driving force of this reaction is the production of a biphasic system with immiscible ester during the reaction. This phenomenon makes it possible to overcome the reaction equilibrium. Using an inexpensive ionic liquid, which could be recycled up to five times without diminution in conversion or selectivity, leads to both a greener and a more economically-viable process.

Role of Cation in Enhancing the Conversion of the Alzheimer’s Peptide into Amyloid Fibrils Using Protic Ionic Liquids

2012 ◽  
Vol 65 (11) ◽  
pp. 1502 ◽  
Author(s):  
Natalie Debeljuh ◽  
Swapna Varghese ◽  
Colin J. Barrow ◽  
Nolene Byrne
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Primary Amine ◽  
Amyloid Fibrils ◽  
Tertiary Amines ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
The Difference ◽  
The Impact

We report on the impact of changes in the protic ionic liquid (pIL) cation on the fibrilisation kinetics and the conversion of the Aβ 16–22 from monomers to amyloid fibrils. When we compare the use of primary, secondary, and tertiary amines we find that the primary amine results in the greatest conversion into amyloid fibrils. We show that the pIL is directly interacting with the peptide and this likely drives the difference in conversion and kinetics observed.

scholarly journals The beneficial effect of protic ionic liquids on the lithium environment in electrolytes for battery applications

2014 ◽  
Vol 2 (22) ◽  
pp. 8258-8265 ◽  
Author(s):  
Thomas Vogl ◽  
Sebastian Menne ◽  
Ruben-Simon Kühnel ◽  
Andrea Balducci
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Beneficial Effect ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid

Protic ionic liquid-based electrolytes are promising electrolytes for lithium-ion batteries.

Sign in / Sign up

Export Citation Format

Share Document