Highly efficient extraction of phenols and aromatic amines into novel ionic liquids incorporating quaternary ammonium cation

Egorov, Vladimir; Smirnova, S. V.; Pletnev, I. V.

doi:10.1016/j.seppur.2008.06.024

Cited by 106 publications

(52 citation statements)

References 40 publications

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“…Besides imidazolium ionic liquids also ionic liquids with quaternary ammonium cations, such as tetrahexylammonium dihexylsulfosuccinate and trioctylmethylammonium salicylate could be successfully applied to extraction of neutral compounds. Egorov (Egorov et al, 2008) showed that the novel RTILs are a more efficient solvent for extraction of phenols and amines than commonly applied for this purpose imidazolium based ILs: HMImTf 2 N and DMImTf 2 N. Compounds extracted into ionic liquid phase can be recovered by back extraction enabling phase-forming compounds recycling. Such multi-steps extraction procedures have been applied in biotechnology using the ILs in large-scale processes.…”

Section: Liquid-liquid Extraction By Hydrophobic Ionic Liquidsmentioning

confidence: 99%

Ionic Liquids in Separation Techniques

Flieger¹,

Czajkowska-Żelazko²

2011

Applications of Ionic Liquids in Science and Technology

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Section: Liquid-liquid Extraction By Hydrophobic Ionic Liquidsmentioning

confidence: 99%

Ionic Liquids in Separation Techniques

Flieger¹,

Czajkowska-Żelazko²

2011

Applications of Ionic Liquids in Science and Technology

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“…Trioctylmethylammonium salicylate was synthesized according to [13] as a slightly yellowish viscous liquid (yield: 85%), analyzed by nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR), then used without further purification. The reaction is illustrated in Fig.…”

Section: Preparation Of Trioctylmethylammonium Salicylate (Tomas)mentioning

confidence: 99%

“…Therefore, the electrode can be used for at least two months without a considerable change in its response characteristic towards Cd(II) ions, which may be due to the stability of TOMAS on palm shell activated carbon. Additionally, the solubility of TOMAS in water is approximately 2.0±0.2 x10 -4 M [13], which significantly decreases the possibility of the electrode components leaching into the solution. …”

Section: Electrodes Life Timementioning

confidence: 99%

High Performance Electrochemical Sensor Based on Task Specific Ionic Liquid Mixed Palm Shell Activated Carbon for Trace Level Cd (II) Detection

Ismaiel

Aroua

Yusoff

2014

Proceedings of International Electronic Conference on Sensors and Applications

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Abstract:In this study, the combination of activated carbon with task specific ionic liquids has resulted in a unique new generation paste in which the traditional components have been replaced with alternate materials. In this study, palm shell activated carbon modified with trioctylmethylammonium salicylate was used as a novel electrode component for the potentiometric determination of cadmium ions in water samples. The proposed potentiometric sensor has good operating characteristics when used to determine Cd(II), including a relatively high selectivity; a Nernstian response in a working concentration range of 1.0×10 -9 to 1.0×10 -2 M, with a detection limit of 1×10 -10 M and a slope of 30.90 ± 1.0 mV/decade; and a fast response time (~ 10 s). The proposed sensor can also be used for at least two months without considerable changes in its response characteristics. No significant changes in the electrode potential were observed when the pH was varied over the range of 4-9. Additionally, the proposed electrodes have been successfully used for the determination of the cadmium contents of real samples without a significant interaction from other cationic or anionic species.

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“…Trioctylmethylammonium salicylate was synthesised according to (Egorov et al 2008) as a slightly yellowish viscous liquid (yield: 85 %), analysed by nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy FTIR, then used without further purification. The method is illustrated in Fig.…”

Section: Preparation Of Trioctylmethylammonium Salicylate (Tomas)mentioning

confidence: 99%

Cadmium (II)-selective electrode based on palm shell activated carbon modified with task-specific ionic liquid: kinetics and analytical applications

Ismaiel

Aroua

Yusoff

2013

Int. J. Environ. Sci. Technol.

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In this study, palm shell activated carbon modified with task-specific ionic liquid was used as a novel electrode component for the potentiometric determination of cadmium ions in water samples. The proposed potentiometric sensor has good operating characteristics, including relatively high selectivity towards the Cd (II) ion, a Nernstian response to Cd (II) ions in a working concentration range of 1.0 9 10 -9 -1.0 9 10 -2 M, with a reasonable detection limit of 1 9 10 -10 M and a slope of 30.90 ± 1.0 mV/decade. No significant changes in electrode potential were observed when the pH was varied over the range of 4-9. A direct technique based on the use of ion-selective electrode potentiometry has been developed in our laboratory for the study of reaction kinetics and kinetic methods of analysis by continuous monitoring of the rate of production or consumption of an ion. The apparent adsorption rate constant was estimated assuming pseudo-second-order kinetics. Additionally, the proposed electrode has been successfully used for the determination of the cadmium content in real samples without a significant interaction from other cationic or anionic species.

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Highly efficient extraction of phenols and aromatic amines into novel ionic liquids incorporating quaternary ammonium cation

Cited by 106 publications

References 40 publications

Ionic Liquids in Separation Techniques

Ionic Liquids in Separation Techniques

High Performance Electrochemical Sensor Based on Task Specific Ionic Liquid Mixed Palm Shell Activated Carbon for Trace Level Cd (II) Detection

Cadmium (II)-selective electrode based on palm shell activated carbon modified with task-specific ionic liquid: kinetics and analytical applications

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