Volumetric and viscosity properties of dicationic ionic liquids in (glucose + water) solutions at T = 298.15 K

Chen, Yujuan; Zhuo, Kelei; Chen, Jing; Bai, Guangyue

doi:10.1016/j.jct.2015.02.017

Cited by 29 publications

(18 citation statements)

References 55 publications

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“…13 C NMR (D 2 O) δ 136.1 (2 × C-2), 123.8, 122.4 (2 × C-4, 2 × C-5), 49.4 (2 × C H 2 N), 36.0 (2 × N C H 3 ), 28.9 (2 × NCH 2 C H 2 ), 22.4 ( C H 2 ). NMR ( 1 H, 13 C) data were in agreement with those reported (Nielsen et al, 2006; Chen et al, 2015).…”

Section: Methodssupporting

confidence: 91%

“…1 H NMR (D 2 O) δ 8.93 (s, 2H, 2 × H-2), 7.65, 7.40 (2s, each 2H, 2 × H-4, 2 × H-5), 4.35 (t, 4H, J = 7.3 Hz, 2 × C H 2 N), 3.93 (s, 6H, 2 × NC H 3 ), 2.56 (qui, 2H, J = 7.2 Hz, C H 2 ); 13 C NMR (D 2 O) δ 136.4 (2 × C-2), 124.1, 122.3 (2 × C-4, 2 × C-5), 46.5 (2 × C H 2 N), 36.1 (2 × N C H 3 ), 30.0 ( C H 2 ). NMR ( 1 H, 13 C) data were in agreement with those reported (Chen et al, 2015; Leclercq and Schmitzer, 2011; Fareghi-Alamdari et al, 2016).…”

Section: Methodssupporting

confidence: 91%

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Systematic Synthesis and Properties Evaluation of Dicationic Ionic Liquids, and a Glance Into a Potential New Field

et al. 2018

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Dicationic ionic liquids (DILs), a subset of the ionic liquid (IL) family, have attracted growing interest in recent years, and the range of applications within which they are investigated is constantly expanding. However, data which allows structure to property correlation of a DIL is still limited, and thus selecting an appropriate salt to address a specific challenge can be problematic. In comparison to traditional ILs, DILs physico-chemical properties can be tuned by changing the length and type of spacer which connects the cationic heads as well as the type of cation. This in turn could give rise to symmetrical or asymmetrical DILs. In this work, a systematic study of a homogeneous class of 12 dibromide DILs and 12 di-carboxylate salts has been performed. The latter class of DILs were also compared to mono cation derivatives. The different traditional exchange methods to prepare carboxylate DILs have been evaluated and an insight into the drawbacks encountered is also presented. Prepared DILs were characterized (NMR, TGA, DSC) allowing the influence of the structure on their thermal stability to be understood. Most DILs were obtained as solid salts after careful drying. For some of these compounds, a new possible application was studied, namely their use as hydrogen bond acceptors (HBA) of deep eutectic mixtures, showing again some significant structural related effects.

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Section: Methodssupporting

confidence: 91%

Section: Methodssupporting

confidence: 91%

Systematic Synthesis and Properties Evaluation of Dicationic Ionic Liquids, and a Glance Into a Potential New Field

et al. 2018

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“…From 3D response surface, it illustrated in Fig. S1A and 1B that the extraction efficiency of FA significantly increased with phase volume ratio, suggesting that more IL solution may be beneficial for the extraction of FA till its value reached 1.4, but slightly declined when phase volume ratio exceed 1.4, which was due to higher viscosity of solution (Chen et al 2015). Meanwhile, the extraction temperature also exhibited remarkable effect on extraction efficiency of FA in Fig.…”

Section: Response Surfaces Of the Variablesmentioning

confidence: 92%

Extraction of ferulic acid and vanilla acid by hydrophobic ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate

Wang

Yingying

et al. 2018

J Food Sci Technol

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The study was carried out to evaluate the extraction efficiency of ferulic acid (FA) and vanilla acid (VA) from aqueous phase into IL phase. To achieve the highest extraction efficiency, the influence of varying key parameters was evaluated and optimized by response surface methodology based on Box-Behnken design, including phase volume ratio, extraction temperature and extraction time. FA (or VA) extraction under the optimal conditions were: phase volume ratio of 1.38 (1.28), extraction temperature of 66.34 °C (49.28 °C) and extraction time of 33.83 min (36.64 min) under optimum conditions an average extraction efficiency of 97.11 ± 1.05% for FA was achieved, while VA was 85.43 ± 1.62%. This was very close to the predicted value from the model, 98.05% (86.16%). Additionally, recycling and utilization of ILs were performed well with the recovery ratio for 81.0%. Based on thermodynamic analysis, FTIR and H NMR analysis, the combination of hydrophobic interaction and hydrogen-bond interaction resulted in the real extraction result above. It is desirable to provide a useful reference for the separation and purification of FA, VA, and extend the potential application of ionic liquid in the separation of natural active compounds with great prospects.

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“…All materials were Analytical Reagent grade (AR grade) used in the present investigation without further purification. The deionized water used in the experiment was doubly distilled over KMnO 4 according to the literature [19]. The purity of materials was listed in table 1.…”

Section: Introductionmentioning

confidence: 99%

Densities, viscosities, and excess properties of binary mixtures of two imidazolide anion functionalized ionic liquids with water at T= (293.15 to 313.15) K

Chen

Song

et al. 2015

The Journal of Chemical Thermodynamics

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Volumetric and viscosity properties of dicationic ionic liquids in (glucose + water) solutions at T = 298.15 K

Cited by 29 publications

References 55 publications

Systematic Synthesis and Properties Evaluation of Dicationic Ionic Liquids, and a Glance Into a Potential New Field

Systematic Synthesis and Properties Evaluation of Dicationic Ionic Liquids, and a Glance Into a Potential New Field

Extraction of ferulic acid and vanilla acid by hydrophobic ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate

Densities, viscosities, and excess properties of binary mixtures of two imidazolide anion functionalized ionic liquids with water at T= (293.15 to 313.15) K

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