Unusual complexation of nitrate with lanthanides in a wet ionic liquid: a new approach for aqueous separation of trivalent f-elements using an ionic liquid as solvent

RSC Advances ◽  
2014 ◽  
Vol 4 (72) ◽  
pp. 37988-37991 ◽  
Author(s):  
Seraj A. Ansari ◽  
Lisheng Liu ◽  
Phuong Diem Dau ◽  
John K. Gibson ◽  
Linfeng Rao
Keyword(s):  
Ionic Liquid ◽  
Separation Process ◽  
New Approach ◽  
Lanthanide Nitrate

The energetics of lanthanide nitrate complexation in a wet ionic liquid (IL; saturated with water as seen in the aqueous separation process) differs entirely from that in dry IL.

New approach to regeneration of an ionic liquid containing solvent by molecular distillation

2011 ◽  
Vol 65 (5) ◽  
Author(s):  
Marek Blahušiak ◽  
Štefan Schlosser ◽  
Ján Cvengroš ◽  
Ján Marták
Keyword(s):  
Ionic Liquid ◽  
Organic Acid ◽  
Molecular Distillation ◽  
Free Acid ◽  
Alkali Solution ◽  
New Approach ◽  
New Process ◽  
Volatile Organic

AbstractA promising new process for the regeneration of solvents with ionic liquid by molecular distillation has been proposed. The main advantage of this process compared with the classic stripping of acids with alkali solution is that the volatile organic acid is recovered with a yield of about 88 % in the form of free acid, not as its salt. Furthermore, improvement on the yield of the stripping can be assumed. The consumption of chemicals in stripping by molecular distillation is reduced.

scholarly journals Proline Based Chiral Ionic Liquids for Enantioselective Michael Reaction

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Kaoru Nobuoka ◽  
Satoshi Kitaoka ◽  
Tsutomu Kojima ◽  
Yuuki Kawano ◽  
Kazuya Hirano ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Positive Charge ◽  
Michael Reaction ◽  
Chiral Synthesis ◽  
Chiral Catalyst ◽  
New Approach ◽  
Chiral Ionic Liquids ◽  
Chiral Ionic Liquid

Chiral ionic liquids, starting from (S)-proline, have been prepared and evaluated the ability of a chiral catalyst. In Michael reaction of trans-β-nitrostyrene and cyclohexanone, all the reactions were carried out under homogeneous conditions without any solvent except for excess cyclohexanone. The chiral ionic liquid catalyst with the positive charge delocalized bulky pyrrolidinium cation shows excellent yields (up to 92%), diastereoselectivities (syn/anti = 96/4), and enantioselectivities (up to 95% ee) and could be reused at least three times without any loss of its catalytic activity. Such results demonstrated a promising new approach for green and economic chiral synthesis by using the chiral ionic liquids as a chiral catalyst and a chiral medium.

A new approach to N-3 functionalized 3,4-dihydropyrimidine-2(1H)-ones with 1,2,4-oxadiazole group as amide isostere via ionic liquid-phase technology

2007 ◽  
Vol 48 (6) ◽  
pp. 1063-1068 ◽  
Author(s):  
Jean Christophe Legeay ◽  
Jean Jacques Vanden Eynde ◽  
Jean Pierre Bazureau
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
New Approach

A new approach of ionic liquid containing polymer sorbents for post-combustion CO2 scrubbing

Polymer ◽  
2012 ◽  
Vol 53 (4) ◽  
pp. 891-894 ◽  
Author(s):  
Jong Suk Lee ◽  
Ryan P. Lively ◽  
Dongkun Huang ◽  
Patrick C. Hillesheim ◽  
Sheng Dai ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
New Approach ◽  
Polymer Sorbents

Covalent coupling of ionic liquid to carbon nanotubes: preparation and tribological properties

2014 ◽  
Vol 1707 ◽  
Author(s):  
Triinu Taaber ◽  
Kaija Põhako-Esko ◽  
Urmas Joost ◽  
Kadi Külasalu ◽  
Mikk Antsov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Tribological Properties ◽  
Potential Application ◽  
Esterification Reaction ◽  
Metathesis Reaction ◽  
New Approach ◽  
Low Concentrations ◽  
Wear And Friction ◽  
Tga Analysis

ABSTRACTA new approach for functionalising oxidised MWCNTs using hydroxylated imidazolium bromide via esterification reaction is reported. The bromide anion of a functionalised MWCNTs was exchanged with bis(trifluoromethanesulfonyl) imide (TFSI) through a metathesis reaction to improve its solubility in the IL medium. Composite was characterized with IR, XPS, EDX and TGA analysis, which clearly confirmed that the MWCNTs were functionalized with IL. For potential application as lubricant, the tribological properties of the IL-functionalised MWCNTs (MWCNT-IL) were also evaluated. It was confirmed that even low concentrations of MWCNT-IL composite in ILs causes a significant improvement in the anti-wear and friction properties.

The development of sustainable yttrium separation process from rare earth enrichments using bifunctional ionic liquid

2016 ◽  
Vol 162 ◽  
pp. 106-113 ◽  
Author(s):  
Yanliang Wang ◽  
Chao Huang ◽  
Fujian Li ◽  
Yamin Dong ◽  
Zeyuan Zhao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Separation Process

scholarly journals Sustainable Method for the Synthesis of Alternative Bis(2-Ethylhexyl) Terephthalate Plasticizer in the Presence of Protic Ionic Liquids

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 457
Author(s):  
Aleksander Grymel ◽  
Piotr Latos ◽  
Karolina Matuszek ◽  
Karol Erfurt ◽  
Natalia Barteczko ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Reaction System ◽  
Organometallic Compounds ◽  
Cost Effective ◽  
High Yield ◽  
Bottom Phase ◽  
Protic Ionic Liquids ◽  
New Approach ◽  
Acidic Ionic Liquids

Inexpensive Brønsted acidic ionic liquids based on trimethylamine and sulfuric acid are proposed as both solvents and catalysts in the synthesis of alternative plasticizer bis(2-ethylhexyl) terephthalate, which has a broad spectrum of applications in plasticization processes. The utilization of 50 mol % of Brønsted ionic liquid led to the full conversion of terephthalic acid after 8 h of reaction at 120 °C. Additionally, a 100% selectivity of bis(2-ethylhexyl) terephthalate was obtained. The advantage of the presented reaction system is based on the formation of a biphasic system during the reaction. The bottom phase consists of an ionic liquid and water, and the upper phase is created by the ester and unreacted alcohol. This phenomenon helps overcome the equilibrium of the reaction and drives it towards a high yield of product. The presented new approach is proposed as a safe, cost-effective, and alternative method to conventional processes with organometallic compounds that, in turn, leads to greener and a more economically viable technology.

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