scholarly journals Selective separation of trivalent f-ions using 1,10-phenanthroline-2,9-dicarboxamide ligands in ionic liquids

2016 ◽  
Vol 45 (29) ◽  
pp. 11624-11627 ◽  
Author(s):  
Jérémy Dehaudt ◽  
Neil J. Williams ◽  
Ilya A. Shkrob ◽  
Huimin Luo ◽  
Sheng Dai
Keyword(s):  
Ionic Liquids ◽  
Selective Separation ◽  
Imidazolium Ionic Liquids ◽  
Alkyl Chains ◽  
Imidazolium Cations

1,10-Phenanthroline-2,9-dicarboxamide complexants decorated with alkyl chains and imidazolium cations have been studied for extraction of trivalent f-ions into imidazolium ionic liquids.

Synthesis and physical properties of new layered silicates based on ionic liquids: improvement of thermal stability, mechanical behaviour and water permeability of PBAT nanocomposites

RSC Advances ◽  
2014 ◽  
Vol 4 (50) ◽  
pp. 26452-26461 ◽  
Author(s):  
Sébastien Livi ◽  
Gabriela Sar ◽  
Valeria Bugatti ◽  
Eliane Espuche ◽  
Jannick Duchet-Rumeau
Keyword(s):  
Thermal Stability ◽  
Ionic Liquids ◽  
Physical Properties ◽  
Mechanical Behaviour ◽  
Water Permeability ◽  
Layered Silicates ◽  
Alkyl Chains ◽  
Imidazolium Cations ◽  
Cationic Exchange

Ionic liquids based on tetraalkylphosphonium and dialkyl imidazolium cations with long alkyl chains have been investigated as new surfactant agents for cationic exchange of lamellar silicates.

scholarly journals One-pot synthesis of symmetric imidazolium ionic liquids N,N-disubstituted with long alkyl chains

RSC Advances ◽  
2020 ◽  
Vol 10 (36) ◽  
pp. 21071-21081
Author(s):  
Giacomo Damilano ◽  
Demian Kalebić ◽  
Koen Binnemans ◽  
Wim Dehaen
Keyword(s):  
Ionic Liquids ◽  
High Yield ◽  
One Pot ◽  
Imidazolium Ionic Liquids ◽  
Alkyl Chains ◽  
One Pot Synthesis ◽  
Greener Synthesis ◽  
Long Chain

The modified Debus–Radziszewski reaction was used as a one-pot on-water reaction to allow a greener synthesis of long-chain 1,3-dialkylimidazolium acetate ionic liquids in high yield from long-chain linear amines.

Tribological Performance of Ionic Liquids Bearing Hydroxyl Groups as Lubricants in the Aluminum-on-Steel Contacts

2010 ◽  
Vol 146-147 ◽  
pp. 1147-1153 ◽  
Author(s):  
Xi Feng Li ◽  
Zong Gang Mu ◽  
Xiao Xuan Wang ◽  
Shu Xiang Zhang ◽  
Yong Min Liang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Hydroxyl Group ◽  
Hydroxyl Groups ◽  
Test Results ◽  
Alkyl Chains ◽  
Imidazolium Cations ◽  
Boundary Films ◽  
Aluminum Surfaces

A series of room temperature ionic liquids bearing hydroxyl groups, namely 1-(3’-hydroxyl-n-propyl)-3-alkylimidazolium tetrafluoroborate or hexafluorophosphate, were prepared and characterized. Their typical physical properties were also determined. The tribological test results show that these ionic liquids possess better friction-reducing and anti-wear ability for aluminum-on-steel system than lubricant X-1P. The friction coefficients of them are little higher than that of the nonfunctionlized ionic liquid LP308, while they possess better anti-wear abilities than the latter, which may ascribe to the chemical activity of hydroxyl group. Both the anions and the side substituted alkyl chains attached to the imidazolium cations affect the tribological performance of the lubricants. The SEM, EDS and XPS analysis of the worn surfaces show that complicated tribo-chemical reactions were involved in the sliding process. The boundary films composed of fluorides, nitrogen oxide, BN, and FePO4 were generated on the rubbing aluminum surfaces, which contribute to effectively decreasing the friction and wear of the contacts.

The influence of 1-alkyl-3-methyl imidazolium ionic liquids on a series of cobalt-1,4-benzenedicarboxylate metal–organic frameworks

CrystEngComm ◽  
2014 ◽  
Vol 16 (46) ◽  
pp. 10649-10657 ◽  
Author(s):  
Ling Xu ◽  
Bing Liu ◽  
Sheng-Xian Liu ◽  
Huan Jiao ◽  
Baltazar de Castro ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Organic Frameworks ◽  
Imidazolium Ionic Liquids ◽  
Alkyl Chains ◽  
Metal Organic

[RMI]+ can tune the structures of MOFs and exert influence on the properties through the alkyl chains.

Combined effect of ether and siloxane substituents on imidazolium ionic liquids

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 64821-64831 ◽  
Author(s):  
Santosh N. Chavan ◽  
Debaprasad Mandal
Keyword(s):  
Ionic Liquids ◽  
Thermal Properties ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Degree Of Freedom ◽  
Combined Effect ◽  
Size Factor ◽  
Imidazolium Ionic Liquids ◽  
Imidazolium Cations ◽  
Coulombic Attraction

The combined effect of ether and siloxane substituents on imidazolium cations helps overcome the Coulombic attraction, van der Waals forces, size factor and conformational degree of freedom, and exerts an impact on viscosity, density and thermal properties of ionic liquids.

scholarly journals Synthesis, antibiotic structure–activity relationships, and cellulose dissolution studies of new room-temperature ionic liquids derived from lignin

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Shihong Liu ◽  
Michael Gonzalez ◽  
Celine Kong ◽  
Scott Weir ◽  
Aaron M. Socha
Keyword(s):  
Antibacterial Activity ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Oxidation Products ◽  
Cellulose Dissolution ◽  
Melting Points ◽  
E Coli ◽  
Alkyl Chains ◽  
Renewable Feedstocks ◽  
Commodity Chemicals

Abstract Background Ionic liquids (ILs) are promising pretreatment solvents for lignocellulosic biomass, but are largely prepared from petroleum precursors. Benzaldehydes from depolymerized lignin, such as vanillin, syringaldehyde, and 4-methoxy benzaldehyde, represent renewable feedstocks for the synthesis of ionic liquids. We herein report syntheses of novel lignin-derived ionic liquids, with extended N-alkyl chains, and examine their melting points, cellulose dissolution capacities, and toxicity profiles against Daphnia magna and E. coli strain 1A1. The latter organism has been engineered to produce isoprenol, a drop-in biofuel and precursor for commodity chemicals. Results The new N,N-diethyl and N,N-dipropyl methyl benzylammonium ILs were liquids at room temperature, showing 75–100 °C decreased melting points as compared to their N,N,N-trimethyl benzylammonium analog. Extension of N-alkyl chains also increased antibacterial activity threefold, while ionic liquids prepared from vanillin showed 2- to 4-fold lower toxicity as compared to those prepared from syringaldehyde and 4-methoxybenzaldehyde. The trend of antibacterial activity for anions of lignin-derived ILs was found to be methanesulfonate < acetate < hydroxide. Microcrystalline cellulose dissolution, from 2 to 4 wt% after 20 min at 100 °C, was observed in all new ILs using light microscopy and IR spectroscopy. Conclusions Ionic liquids prepared from H-, S- and G-lignin oxidation products provided differential cytotoxic activity against E. coli and D. magna, suggesting these compounds could be tailored for application specificity within a biorefinery.

Efficient selective separation of yttrium from holmium and erbium using carboxyl functionalized ionic liquids

2021 ◽  
pp. 118774
Author(s):  
Kaibo Hu ◽  
Hongshuai Gao ◽  
Yi Nie ◽  
Haifeng Dong ◽  
Junjun Yan ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Selective Separation

scholarly journals Carbon dioxide capture using water-imidazolium ionic liquids-amines ternary systems

2021 ◽  
Vol 105 ◽  
pp. 103210
Author(s):  
Mariusz Zalewski ◽  
Tomasz Krawczyk ◽  
Agnieszka Siewniak ◽  
Aleksander Sobolewski
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Carbon Dioxide Capture ◽  
Ternary Systems ◽  
Imidazolium Ionic Liquids
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