POLYOXOMETALATE-IONIC LIQUIDS (POM-ILs)–THE ULTIMATE SOFT POLYOXOMETALATES? A CRITICAL PERSPECTIVE

2014 ◽  
Vol 02 (01) ◽  
pp. 1440001 ◽  
Author(s):  
SVEN HERRMANN ◽  
ANDREY SELIVERSTOV ◽  
CARSTEN STREB
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
State Of The Art ◽  
Critical Perspective ◽  
Active Materials ◽  
Initial Development ◽  
Electrochemically Active ◽  
Recent Developments ◽  
Key Features

In this paper, a critical perspective on the state-of-the-art, current developments and future applications of polyoxometalate-ionic liquids (POM-ILs) is presented. This paper is focused on recent developments for true polyoxometalate ionic liquids, where the POM cluster acts as the anionic component in an ionic liquid. A brief overview of the initial development of POM-ILs is given and key features of the materials such as viscosity, conductivity and thermal stability are compared. Current applications of POM-ILs are exemplified and the advantages as well as limitations of POM-ILs for usage as catalysts, sensors and electrochemically active materials are discussed. Potential future areas of application are described and initial studies in these areas are highlighted.

scholarly journals Absorption of Sulfur Dioxide by Tetraglyme–Sodium Salt Ionic Liquid

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 436 ◽  
Author(s):  
Qiang Xu ◽  
Wei Jiang ◽  
Jianbai Xiao ◽  
Xionghui Wei
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Sulfur Dioxide ◽  
Sodium Salt ◽  
Lithium Salt ◽  
Absorption Capacity ◽  
Excellent Thermal Stability ◽  
Physical Absorption ◽  
So2 Absorption

A series of tetraglyme–sodium salt ionic liquids have been prepared and found to be promising solvents to absorb SO2. The experiments here show that [Na–tetraglyme][SCN] ionic liquid has excellent thermal stability and a 30% increase in SO2 absorption capacity compared to other sodium salt ionic liquids and the previously studied lithium salt ionic liquids in terms of molar absorption capacity. The interaction between SO2 and the ionic liquid was concluded to be physical absorption by IR and NMR.

scholarly journals Ionic liquids assisted processing of renewable resources for the fabrication of biodegradable composite materials

2017 ◽  
Vol 19 (9) ◽  
pp. 2051-2075 ◽  
Author(s):  
Hamayoun Mahmood ◽  
Muhammad Moniruzzaman ◽  
Suzana Yusup ◽  
Tom Welton
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Composite Materials ◽  
Renewable Resources ◽  
Lignocellulosic Materials ◽  
Biodegradable Composites ◽  
Biodegradable Composite ◽  
Recent Developments

A review on recent developments in the ionic liquid assisted processing of biopolymers and lignocellulosic materials for the fabrication of biodegradable composites.

Pyridinium-clubbed dicationic ionic liquid electrolytes for efficient next-generation photo harvesting

2018 ◽  
Vol 42 (9) ◽  
pp. 6990-6996 ◽  
Author(s):  
Abhishek Dhar ◽  
Nadavala Siva Kumar ◽  
Mohammad Asif ◽  
Rohit L. Vekariya
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Next Generation ◽  
Photovoltaic Devices ◽  
Excellent Thermal Stability ◽  
Liquid Electrolytes ◽  
Dicationic Ionic Liquid ◽  
Dicationic Ionic Liquids

A new series of pyridinium based dicationic ionic liquids was designed and synthesized. The synthesized ionic liquids have excellent thermal stability and good ionic conductivity. They can be used as electrolytes in photovoltaic devices.

An overview of the performance of the COSMO-RS approach in predicting the activity coefficients of molecular solutes in ionic liquids and derived properties at infinite dilution

2017 ◽  
Vol 19 (19) ◽  
pp. 11835-11850 ◽  
Author(s):  
Kamil Paduszyński
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Activity Coefficients ◽  
Thermodynamic Model ◽  
Infinite Dilution ◽  
Binary Systems ◽  
State Of The Art ◽  
Derived Properties

An overview of performance of state-of-the-art thermodynamic model COSMO-RS in capturing various effects of structure on interactions in ionic liquid binary systems, expressed in terms of limiting activity coefficients of molecular solutes, is presented.

scholarly journals Penentuan Resistivitas Tak-Terkompensasi Cairan Ion Berbasis Imidazol dengan Metode EIS: Pengaruh Panjang Alkil dan Perbedaan Anion

2020 ◽  
Vol 11 (2) ◽  
pp. 106-112
Author(s):  
Aep Patah ◽  
Yulia Rachmawati ◽  
Riyadini Utari ◽  
Achmad Rochliadi
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Electrochemical Impedance ◽  
High Viscosity ◽  
High Thermal Stability ◽  
Bode Plot ◽  
Ohmic Drop ◽  
Increasing Temperature ◽  
Solvent Properties

Ionic liquids have interesting properties because they have several advantages compared to conventional organic solvents, such as high thermal stability, high viscosity, good solvent properties, non-flammable, and non-volatile. In electrochemistry, ionic liquids can be used as solvents without the addition of electrolytes. However, ionic liquids still have resistivity properties (uncompensated resistance), thus ohmic drop measurements are needed for a potential correction. Imidazole-based ionic liquids, which are known for their high conductivity and commonly used as a solvent, have been measured of their resistivity as a function of temperature, and type of their cations/anions. Electrochemical Impedance Spectroscopy (EIS) method was chosen to measure the resistivity of ionic liquids and Bode plot was generated for the analysis of the results. The measured resistivities of ionic liquids are in the range of 420 to 1500 ohm. It is concluded that the resistivity of the imidazole-based ionic liquid is influenced by the size of their constituent ions, the viscosity, and the resistance is decreased with increasing temperature.

Recent developments in the field of energetic ionic liquids

2014 ◽  
Vol 2 (22) ◽  
pp. 8153-8173 ◽  
Author(s):  
Elena Sebastiao ◽  
Cyril Cook ◽  
Anguang Hu ◽  
Muralee Murugesu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Recent Developments ◽  
Energetic Ionic Liquids

Energetic ionic liquids (EILs) are a subset of the rapidly growing field of ionic liquid research.

Ionic Liquids Based on Imidazolium and Pyrrolidinium Salts of the Tricyanomethanide Anion

2004 ◽  
Vol 57 (2) ◽  
pp. 121 ◽  
Author(s):  
Stewart A. Forsyth ◽  
Stuart R. Batten ◽  
Qing Dai ◽  
Douglas R. MacFarlane
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Thermal Analyses ◽  
Melting Points ◽  
Ambient Temperatures ◽  
Electrochemical Window ◽  
Potential Use

A novel series of tricyanomethanide ionic liquids have been prepared and characterized for potential use as ionic liquid solvents. Full thermal analyses of all salts at ambient and sub-ambient temperatures are reported (melting points –17° to 160°C). The thermal stability and decomposition temperatures are also presented (Tdecomp ≈ 300°C). An electrochemical window of ~3 V has been established and the conductivity measured over a range of temperatures (20 mS cm–1 at 25°C).

scholarly journals Functions of Ionic Liquids in Preparing Membranes for Liquid Separations: A Review

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 395
Author(s):  
Dayuan Zheng ◽  
Dan Hua ◽  
Yiping Hong ◽  
Abdul-Rauf Ibrahim ◽  
Ayan Yao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ionic Liquids ◽  
Vapor Pressure ◽  
Physical Properties ◽  
Review Article ◽  
Future Perspectives ◽  
Comprehensive Overview ◽  
Membrane Materials ◽  
Recent Developments ◽  
Liquid Separations

Membranes are widely used for liquid separations such as removing solute components from solvents or liquid/liquid separations. Due to negligible vapor pressure, adjustable physical properties, and thermal stability, the application of ionic liquids (ILs) has been extended to fabricating a myriad of membranes for liquid separations. A comprehensive overview of the recent developments in ILs in fabricating membranes for liquid separations is highlighted in this review article. Four major functions of ILs are discussed in detail, including their usage as (i) raw membrane materials, (ii) physical additives, (iii) chemical modifiers, and (iv) solvents. Meanwhile, the applications of IL assisted membranes are discussed, highlighting the issues, challenges, and future perspectives of these IL assisted membranes in liquid separations.

scholarly journals Investigation of the New Room Temperature Ionic Liquid of Al(NO3)3.9H2O with Urea CO(NH2)2

2016 ◽  
Vol 13 (3) ◽  
pp. 489-497
Author(s):  
Baghdad Science Journal
Keyword(s):  
Thermal Stability ◽  
Phase Diagram ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Freezing Point ◽  
Freezing Temperature ◽  
Aluminum Nitrate Nonahydrate ◽  
Ft Ir ◽  
Nitrate Nonahydrate

Mixing aluminum nitrate nonahydrate with urea produced room temperatures clear colorless ionic liquid with lowest freezing temperature at (1: 1.2) mole ratio respectively. Freezing point phase diagram was determined and density, viscosity and conductivity were measured at room temperature. It showed physical properties similar to other ionic liquids. FT-IR,UV-Vis, 1H NMR and 13C NMR were used to study the interaction between its species where - CO ??? Al- bond was suggested and basic ion [Al(NO3)4]? and acidic ions [Al(NO3)2. xU]+ were proposed. Water molecule believed to interact with both ions. Redox potential was determined to be about 2 Volt from – 0.6 to + 1.4 Volt with thermal stability up to 326 ?.

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