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.

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.

(Invited) Silica Based Ionogels: Raman Study of Protic Vs. non Protic Ionic Liquids, with Lithium Salt Vs. Sodium Salt

2020 ◽  
Vol MA2020-02 (3) ◽  
pp. 527-527
Author(s):  
Angélique Marie ◽  
Maxime Bayle ◽  
Anne Galarneau ◽  
Bilel Said ◽  
Andrea Balducci ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Sodium Salt ◽  
Lithium Salt ◽  
Protic Ionic Liquids ◽  
Raman Study

Molecular dynamics and a spectroscopic study of sulfur dioxide absorption by an ionic liquid and its mixtures with PEO

2016 ◽  
Vol 18 (41) ◽  
pp. 28901-28910 ◽  
Author(s):  
Karina Hoher ◽  
Piercarlo F. Cardoso ◽  
Luiz F. Lepre ◽  
Rômulo A. Ando ◽  
Leonardo J. A. Siqueira
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquid ◽  
Sulfur Dioxide ◽  
Spectroscopic Study ◽  
Physical Absorption

Physical absorption of SO2 is more efficient in PEO than in a quaternary ionic liquid.

Highly efficient sulfur dioxide capture by glyme–lithium salt ionic liquids

RSC Advances ◽  
2015 ◽  
Vol 5 (58) ◽  
pp. 46564-46567 ◽  
Author(s):  
Shaoyang Sun ◽  
Yanxia Niu ◽  
Qiang Xu ◽  
Zuchen Sun ◽  
Xionghui Wei
Keyword(s):  
Ionic Liquids ◽  
Sulfur Dioxide ◽  
Lithium Salt ◽  
Highly Efficient ◽  
Li Ion

A series of ionic liquids can be simply prepared by mixing glymes and Li salts. The formed quasi-aza-crown cations of glymes and Li ion exhibit an efficient and excellent reversible absorption of sulfur dioxide.

Capture of CO2 by [bmim]PF6 Ionic Liquid under Normal Temperature and Pressure Conditions

2011 ◽  
Vol 347-353 ◽  
pp. 116-119
Author(s):  
Qiang Wei Li ◽  
Yi Zhao ◽  
Li Dong Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Low Temperature ◽  
Absorption Capacity ◽  
Green Solvent ◽  
Absorption Process ◽  
Chemical Absorption ◽  
Saturated Absorption ◽  
Absorption Time ◽  
Temperature And Pressure

Subscript textCO2 emission control is an important issue, in which chemical absorption process has reached the widest application. Ionic liquid is a kind of green solvent and expected to take the place of traditional amine absorbents as for its better characteristics. In this paper, two iminazole base ionic liquids were synthesized, including of bromide 1-butyl-3-methylimidazo ([bmim]Br) and 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6). The performance of CO2 absorption by [bmim]PF6 and [bmim]Br were compared under the same other conditions. Subscript textIt indicates that [bmim]PF6 has more absorption capacity and less saturated absorption time under low temperature, which provides reference for CO2 control by ionic liquid.

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.

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 The CO2 Absorption in Flue Gas Using Mixed Ionic Liquids

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1034 ◽  
Author(s):  
Guoqing Wu ◽  
Ying Liu ◽  
Guangliang Liu ◽  
Xiaoying Pang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Flue Gas ◽  
Active Sites ◽  
Structural Changes ◽  
Absorption Capacity ◽  
Co2 Absorption ◽  
Quantum Chemical Methods ◽  
Before And After ◽  
Calculation Results

Because of the appealing properties, ionic liquids (ILs) are believed to be promising alternatives for the CO2 absorption in the flue gas. Several ILs, such as [NH2emim][BF4], [C4mim][OAc], and [NH2emim[OAc], have been used to capture CO2 of the simulated flue gas in this work. The structural changes of the ILs before and after absorption were also investigated by quantum chemical methods, FTIR, and NMR technologies. However, the experimental results and theoretical calculation showed that the flue gas component SO2 would significantly weaken the CO2 absorption performance of the ILs. SO2 was more likely to react with the active sites of the ILs than CO2. To improve the absorption capacity, the ionic liquid (IL) mixture [C4mim][OAc]/ [NH2emim][BF4] were employed for the CO2 absorption of the flue gas. It is found that the CO2 absorption capacity would be increased by about 25%, even in the presence of SO2. The calculation results suggested that CO2 could not compete with SO2 for reacting with the IL during the absorption process. Nevertheless, SO2 might be first captured by the [NH2emim][BF4] of the IL mixture, and then the [C4mim][OAc] ionic liquid could absorb more CO2 without the interference of SO2.

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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