Tailoring ionic liquid catalysts: structure, acidity and catalytic activity of protonic ionic liquids based on anionic clusters, [(HSO4)(H2SO4)x]− (x = 0, 1, or 2)

2014 ◽  
Vol 16 (7) ◽  
pp. 3463-3471 ◽  
Author(s):  
Karolina Matuszek ◽  
Anna Chrobok ◽  
Fergal Coleman ◽  
Kenneth R. Seddon ◽  
Małgorzata Swadźba-Kwaśny
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Chemical Properties ◽  
Esterification Reaction ◽  
Anionic Clusters ◽  
Physico Chemical

The speciation of a family of inexpensive, easily prepared protonic ionic liquids, their physico-chemical properties and their performance as catalysts in the model esterification reaction have been correlated.

Density Measurement of Pyridine Based Ionic Liquids and Methanol Binary Mixtures

2013 ◽  
Vol 675 ◽  
pp. 248-251
Author(s):  
Zhuo Li ◽  
Chang Ping Li
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Storage ◽  
Binary Mixtures ◽  
Density Measurement ◽  
Chemical Properties ◽  
Storage Material ◽  
Physico Chemical ◽  
New Energy ◽  
Energy Storage Material

As a new environmentally friendly solvent, ionic liquids have been investigated widely. The lack of physico-chemical properties data of ionic liquids has become a bottleneck that restricts their applications. In this study, the investigation of the density for binary mixtures of CnpyNTf2 (n = 2, 4, 5) and methanol is measured using Westphal balance. This study would be very important for the application of binary mixtures of ionic liquid and methanol in developing new energy storage material.

Synthesis and characterization of 2′,3′-epoxy propyl-N-methyl-2-oxopyrrolidinium salicylate ionic liquid and study of its interaction with water or methanol

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61566-61575 ◽  
Author(s):  
A. Vasanthakumar ◽  
I. Bahadur ◽  
G. Redhi ◽  
R. M. Gengan
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chemical Properties ◽  
Synthesis And Characterization ◽  
Physico Chemical

Important physico-chemical properties of ionic liquids (ILs) can be manipulated by adjusting the nature of the cation or anion.

Thermodynamics of ionic liquid evaporation under vacuum

2018 ◽  
Vol 20 (33) ◽  
pp. 21262-21268 ◽  
Author(s):  
Shohei Horike ◽  
Masato Ayano ◽  
Masahiro Tsuno ◽  
Tatsuya Fukushima ◽  
Yasuko Koshiba ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Liquid Evaporation ◽  
Evaporation Dynamics

The low volatility of ionic liquids (ILs) is one of their most interesting physico-chemical properties; however, the general understanding of their evaporation dynamics under vacuum is still lagging.

scholarly journals Solid–ionic liquid interfaces: pore filling revisited

2014 ◽  
Vol 16 (44) ◽  
pp. 24359-24372 ◽  
Author(s):  
M. T. Heinze ◽  
J. C. Zill ◽  
J. Matysik ◽  
W. D. Einicke ◽  
R. Gläser ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Mesoporous Silica ◽  
Chemical Properties ◽  
Liquid Interface ◽  
Pore Geometry ◽  
Liquid Interfaces ◽  
Pore Filling ◽  
Strength Of Interaction ◽  
Physico Chemical

The strength of interaction at the mesoporous silica–ionic liquid interface and the pore geometry affect the materials' morphology and the physico-chemical properties of the ionic liquids.

15N NMR studies provide insights into physico-chemical properties of room-temperature ionic liquids

2021 ◽  
Author(s):  
Christoph Wiedemann ◽  
David Fushman ◽  
Frank Bordusa
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Chemical Properties ◽  
Room Temperature Ionic Liquids ◽  
15N Nmr ◽  
Nmr Studies ◽  
Physico Chemical ◽  
Alternative Solvents

Ionic liquids (ILs) have gained a lot of attention as alternative solvents in many fields of science in the last two decades. It is known that the type of anion...

Ionic Liquids in Analytical Chemistry: Applications and Recent Trends

2021 ◽  
Vol 17 ◽  
Author(s):  
Giuseppe Maria Merone ◽  
Angela Tartaglia ◽  
Enrica Rosato ◽  
Cristian D’Ovidio ◽  
Abuzar Kabir ◽  
...  
Keyword(s):  
Analytical Chemistry ◽  
Ionic Liquids ◽  
Stationary Phases ◽  
Extraction Procedure ◽  
Chemical Properties ◽  
Electrochemical Analysis ◽  
Physico Chemical ◽  
Recent Trends ◽  
Number Of Publications ◽  
Physical And Chemical

Background: Ionic liquids (ILs) are a unique class of compounds consisting exclusively of cations and anions that possess distinctive properties such as low volatility, high thermal stability, miscibility with water and organic solvents, electrolytic conductivity and non-flammability. Ionic liquids have been defined as "design solvents", because it is possible to modify their physical and chemical properties by appropriately choosing cations and anions, in order to meet the specific characteristics based on their potential application. Introduction: Due of their tunable nature and properties, ILs are considered as the perfect candidates for numerous applications in analytical chemistry including sample preparation, stationary phases in liquid or gas chromatography, additives in capillary electrophoresis, or in mass spectrometry for spectral and electrochemical analysis. In the last years, the number of publications regarding ILs has rapidly increased, highlighting the broad applications of these compounds in various fields of analytical chemistry. Results: This review first described the main physico-chemical characteristics of ionic liquids, and subsequently reported the various applications in different subdisciplines of analytical chemistry, including the extraction procedure and separation techniques. Furthermore, in each paragraph the most recent applications of ionic liquids in the food, environmental, biological, etc. fields have been described. Conclusion: Overall, the topic discussed highlights the key role of ionic liquids in analytical chemistry, giving hints for their future applications in chemistry but also in biology and medicine.

ChemInform Abstract: Physico-Chemical Properties of Task-Specific Ionic Liquids

ChemInform ◽  
2013 ◽  
Vol 44 (31) ◽  
pp. no-no
Author(s):  
Luis C. Branco ◽  
Goncalo V. S. M. Carrera ◽  
Joao Aires-de-Sousa ◽  
Ignacio Lopez Martin ◽  
Raquel Frade ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Chemical Properties ◽  
Physico Chemical

Tetracarboxyl-Functionalized Ionic Liquid: Synthesis and Catalytic Properties

2015 ◽  
Vol 68 (10) ◽  
pp. 1513 ◽  
Author(s):  
Miaona Feng ◽  
Guoying Zhao ◽  
Hongling Gao ◽  
Suojiang Zhang
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Propionic Acid ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
High Stability ◽  
Ammonium Acetate ◽  
Catalytic Properties ◽  
Potential Applications

Novel tetracarboxyl-functionalized 2,2′-biimidazolium-based ionic liquids (ILs) with different anions were synthesized in two steps from readily available and sustainable starting materials including ammonium acetate, glyoxal, and halogenated propionic acid. The functionalized IL exhibited higher catalytic activity towards the cycloaddition of CO2 to terminal epoxides. With propylene oxide as a substrate, the optimum yield of propylene carbonate reached 82.7 % at an initial CO2 pressure of 2.0 MPa for 4 h at 140°C. Moreover, the functionalized IL catalyst displayed a high stability and can be reused for at least five cycles without obvious loss of catalytic activity. The results provide a simple and economical way to synthesize multi-functionalized imidazolium-based ILs with versatile potential applications.

scholarly journals The effect of the morpholinium ionic liquid anion on the catalytic activity of Rh (or Pt) complex–ionic liquid systems in hydrosilylation processes

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26922-26927 ◽  
Author(s):  
Magdalena Jankowska-Wajda ◽  
Izabela Dąbek ◽  
Ryszard Fiedorow ◽  
Hieronim Maciejewski
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Platinum Complexes ◽  
Pt Complex ◽  
Liquid Systems

Rhodium and platinum complexes were immobilized in morpholinium ionic liquids, the effect of which on the catalytic activity was determined.

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