Quantitative and qualitative analysis of ionic solvation of individual ions of imidazolium based ionic liquids in significant solution systems by conductance and FT-IR spectroscopy

RSC Advances ◽  
2014 ◽  
Vol 4 (38) ◽  
pp. 19831-19845 ◽  
Author(s):  
Deepak Ekka ◽  
Mahendra Nath Roy
Keyword(s):  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Qualitative Analysis ◽  
Ionic Solvation ◽  
Wide Range ◽  
Liquid Systems ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Exploration of significant interactions in eco-friendly RTILs in some liquid systems with a wide range of applications.

scholarly journals Correction to “Using FT-IR Spectroscopy to Measure Charge Organization in Ionic Liquids”

2016 ◽  
Vol 120 (14) ◽  
pp. 3591-3592 ◽  
Author(s):  
Christopher M. Burba ◽  
Jonathan Janzen ◽  
Eric D. Butson ◽  
Gage L. Coltrain
Keyword(s):  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Determination of the Presence of Composite Ions in Catalysts and Composite Ionic Liquids-Catalyzed Isobutane Alkylation

2011 ◽  
Vol 287-290 ◽  
pp. 1666-1670 ◽  
Author(s):  
Ying Nan Cong ◽  
Ying Liu ◽  
Rui Sheng Hu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Catalytic Performance ◽  
Ir Absorption ◽  
Absorption Bands ◽  
Alkyl Groups ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A novel and efficient method was established to investigate isobutane/2-butene alkylation. In this method FT-IR spectroscopy was used to determine the presence of the composite ion (AlCuCl5-) in the composite ionic liquid (CIL). The trimethylpentane selectivity of the composite ionic liquid for isobutane/2-butene alkylation was also estimated by monitoring the shift of IR absorption bands in the range 1636–1685 cm-1. A detailed study of the alkylation of isobutane /2-butene in CIL media has been conducted using 1-alkyl-3-methylimidazolium halide/X aluminum chloride-y cuprous (I) chloride ([CnMIM]Cl/xAlCl3-yCuCl) encompassing various alkyl groups (n=4:B, butyl-, n=6:H, hexyl-, and n=8: O, octyl-)respectively. The ionic liquids showed higher selectivities of C8 as well as the TMP/DMH ratios in alkylates. The better catalytic performance of CIL can be attributed to the presence of the composite ion in it, and the catalytic performance of the chloroaluminate ionic liquid can be indicated by the 1685 cm-1band of FT-IR spectroscopy.

The Nature of Cation–Anion Interactions in Magnetic Ionic Liquids as Revealed Using High-Pressure Fourier Transform Infrared (FT-IR) Spectroscopy

2019 ◽  
Vol 73 (5) ◽  
pp. 511-519 ◽  
Author(s):  
Christopher M. Burba ◽  
Hai-Chou Chang
Keyword(s):  
High Pressure ◽  
Fourier Transform ◽  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Ir Spectra ◽  
Ambient Pressure ◽  
Vibrational Modes ◽  
Magnetic Ionic Liquids ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Magnetic ionic liquids are a group of magneto-responsive compounds that typically possess high ionic conductivities and low vapor pressures. In spite of the general interest in these materials, a number of questions concerning the fundamental interactions among the ions remain unanswered. We used vibrational spectroscopy to gain insight into the nature of these interactions. Intramolecular vibrational modes of the ions are quite sensitive to their local potential energy environments, which are ultimately defined by cation–anion coordination schemes present among the ions. Ambient pressure Fourier transform infrared (FT-IR) spectroscopy indicates comparable interaction motifs for 1-ethyl-3-methylimidazolium tetrachloroferrate(III), [emim]FeCl4, and 1-ethyl-3-methylimidazolium tetrabromoferrate(III), [emim]FeBr4, magnetic ionic liquids. However, the vibrational modes of [emim]FeCl4 generally occur at slightly higher frequencies than those of [emim]FeBr4. These differences reflect different interaction strengths between the [emim]+ cations and [Formula: see text] or [Formula: see text] anions. This conclusion is supported by gas-phase ab initio calculations of single [emim]FeCl4 and [emim]FeBr4 ion pairs that show longer C–H···Br–Fe interaction lengths compared to C–H···Cl–Fe. Although the IR spectra of [emim]FeCl4 and [emim]FeBr4 are comparable at ambient pressure, a different series of spectroscopic changes transpire when pressure is applied to these compounds. This suggests [emim]+ cations experience different types of interaction with the anions under high-pressure conditions. The pressure-dependent FT-IR spectra highlights the critical role ligands attached to the tetrahalogenoferrate(III) anions play in modulating cation–anion interactions in magnetic ionic liquids.

scholarly journals Using FT-IR Spectroscopy to Measure Charge Organization in Ionic Liquids

2013 ◽  
Vol 117 (29) ◽  
pp. 8814-8820 ◽  
Author(s):  
Christopher M. Burba ◽  
Jonathan Janzen ◽  
Eric D. Butson ◽  
Gage L. Coltrain
Keyword(s):  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

scholarly journals Synthesis of gemini basic ionic liquids and their application in anion exchange membranes

RSC Advances ◽  
2018 ◽  
Vol 8 (19) ◽  
pp. 10185-10196 ◽  
Author(s):  
Dan Wang ◽  
Yifu Wang ◽  
Heting Wan ◽  
Jilin Wang ◽  
Lulu Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Anion Exchange ◽  
Raw Materials ◽  
Anion Exchange Membranes ◽  
Step Method ◽  
H Nmr ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A gemini-type basic morpholine ionic liquid ([Nbmd][OH]) was synthesizedviaa two-step method with morpholine, bromododecane and 1,4-dibromobutane as raw materials, and its structure was characterized by1H NMR and FT-IR spectroscopy.

Multiscale exploration of hydrocarbons adsorption and hopping through the ZSM-5 channels - from Monte Carlo modelling to experiment

2021 ◽  
Author(s):  
Maciej Strzempek ◽  
Karolina A. Tarach ◽  
Kinga Góra-Marek ◽  
Fernando Rey ◽  
Miguel Palomino ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ir Spectroscopy ◽  
Aliphatic Hydrocarbons ◽  
Adsorption Studies ◽  
Ft Ir ◽  
Gravimetric Adsorption ◽  
Hydrocarbons Adsorption ◽  
Ft Ir Spectroscopy

Abstract In this article the results of the statistical MC modelling corroborated by the FT-IR spectroscopy and gravimetric adsorption studies of the low aliphatic hydrocarbons in ZSM-5 (Si/Al =28 or...

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