Ionic liquids and catalysis: Recent progress from knowledge to applications

Olivier‐Bourbigou, Hélène; Magna, Lionel; Morvan, Didier Le

doi:10.1016/j.apcata.2009.10.008

Cited by 1,508 publications

(806 citation statements)

References 318 publications

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“…In the last 15 years, the use of ILs has increased considerably due to their interesting chemical and physical properties, such as negligible vapour pressure, high thermal stability, low melting point, high solvating capacity, high thermal conductivity and wide electrochemical window [1][2][3][4][5][6]. These properties mean that ILs are excellent candidates for various applications, including their use as environmentally friendly solvents for replacing traditional volatile organic ones [7,8].…”

Section: Introductionmentioning

confidence: 99%

Isoconversional kinetic analysis applied to five phosphonium cation-based ionic liquids

et al. 2017

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Thermal degradation of five phosphonium cation-based ionic liquids ([P 66614 outperforming the other ones in both pyrolytic and oxidising conditions. Although the thermal degradation mechanism is affected by atmospheric conditions, the degradation trend remains practically constant. As the dynamic methodology usually overestimates the long-term thermal stability, an isoconversional methodology is better for predicting the long-term thermal stability of these ionic liquids in order to be used as base oil or additive in lubricants formulation. Finally, the model-free methodology can predict at lower costs the ILs performance in isothermal conditions. Highlights• Weakly coordinating anions provoke good thermal stability of ILs.• • Isoconversional methods are better than dynamic ones for long-term thermal studies.• Activation energy behavior at low conversions is related to a single reaction.• Model-free methodology can predict the ILs performance in isothermal conditions.

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Section: Introductionmentioning

confidence: 99%

Isoconversional kinetic analysis applied to five phosphonium cation-based ionic liquids

et al. 2017

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“…Ionic liquids (ILs), which are well known as "green liquid" for the negligible vapour pressure, high ionic conductivity and chemical stability [1], have been widely used in biotechnologies [2], catalysis [3], synthetic chemistry [4]. These widespread applications inevitably lead to the improper release of ILs into environment via the effluents emission, resulting in serious threats to aquatic and terrestrial ecosystems [5].…”

Section: Introductionmentioning

confidence: 99%

AuPd/Fe3O4-based three-dimensional electrochemical system for efficiently catalytic degradation of 1-butyl-3-methylimidazolium hexafluorophosphate

Qin

Sun

Liu

et al. 2015

Electrochimica Acta

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Keywords: three-dimensional system AuPd/Fe 3 O 4 ionic liquids kinetic study degradation mechanism A B S T R A C T Ionic liquids (ILs) have been reported to be toxic and harmful to aquatic and terrestrial organisms, thus it is imperative to remove the residual ILs in various effluents. In this work, a three-dimensional (3D) electrocatalytic system with synthesized AuPd/Fe 3 O 4 nanoparticles (NPs) as particle electrodes (PEs) was established for the degradation of typical 1-butyl-3-methylimidazolium ([BMIM]) based ILs. The assynthesized AuPd/Fe 3 O 4 possessed preferable electrochemical properties for in situ supplement of H 2 O 2 and renewable Fe species. This 3D electrocatalytic system exhibited excellent performance with 100% removal rate of BMIM in 90 min under 120 mA, pH 3, and 1 g/L dosage of AuPd/Fe 3 O 4 NPs. Kinetics study revealed that the degradation rule of BMIM well followed the anodic Fenton treatment (AFT) model, in which the variation of the degradation rate was positively correlated with that of dissolved Fe 2+ , while significantly differed from the evolution of H 2 O 2 . Particularly, the appearance of the H 2 O 2 inflection point suggested the optimal effectiveness of AuPd/Fe 3 O 4 -based 3D electrocatalysis. During this electrocatalytic process, the active HO was produced over the AuPd/Fe 3 O 4 PEs, thereby initiated the highly efficient degradation of BMIM into 1-butyl-3-methyl-2,4,5-trioxoimidazolidine, 1-butyl-3-methylurea and N-butyl-formamide as main intermediates. The electrocatalytic stability of the AuPd/Fe 3 O 4 PEs over seven times further indicated the potential applicability for organic wastewater treatment.

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“…Ionic liquids are defined as salts with a melting point below 100°C which exhibit several unique properties such as negligible vapor pressure, extraordinary dissolution properties, wide liquid range, high electrical conductivity, low volatility, and low flammability [10,11]. Ionic liquids have been reported to dissolve cellulose for up to 25 wt% [12].…”

Section: Introductionmentioning

confidence: 99%

Controlled Depolymerization of Cellulose Fibres Isolated from Lignocellulosic Biomass Wastes

Pang

Voon

Chin

2018

International Journal of Polymer Science

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Various types of lignocellulosic biomass wastes (LBW) had been successfully converted into cello-oligomers with different chain lengths via a controlled depolymerization process. Cellulose fibres isolated from LBW samples were dissolved with room temperature ionic liquid (RTIL) in the presence of an acid catalyst, Amberlyst 15 DRY. The effects of reaction time on the degree of polymerization and yields of water-insoluble cello-oligomers formed were studied. Besides, the yields of water-soluble cello-oligomers such as glucose and xylose were also determined. The depolymerization of cellulose fibres isolated from LBW was observed to follow both second-order and pseudo-second order kinetics under specific conditions. As such, cello-oligomers of controllable chain lengths could be obtained by adjusting the duration of depolymerization process under optimized conditions.

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Ionic liquids and catalysis: Recent progress from knowledge to applications

Cited by 1,508 publications

References 318 publications

Isoconversional kinetic analysis applied to five phosphonium cation-based ionic liquids

Isoconversional kinetic analysis applied to five phosphonium cation-based ionic liquids

AuPd/Fe3O4-based three-dimensional electrochemical system for efficiently catalytic degradation of 1-butyl-3-methylimidazolium hexafluorophosphate

Controlled Depolymerization of Cellulose Fibres Isolated from Lignocellulosic Biomass Wastes

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