Synergistic Effect of Acid–Base Coupling Bifunctional Ionic Liquids in Impregnated Resin for Rare Earth Adsorption

Zhao, Zeyuan; Sun, Xiaoqi; Dong, Yamin; Wang, Yanliang

doi:10.1021/acssuschemeng.5b01253

Cited by 38 publications

(14 citation statements)

References 39 publications

(78 reference statements)

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“…However, compared with methyl isobutyl ketone, these single solvents perform little improvement for the extraction efficiency . Synergistic effect has been considered as the important way to increase the distribution coefficient of a single solvent. , Alcohols always have synergistic effect for phenols with other solvents, such as isopropyl ether + n -pentanol, 1-octanol + butyl acetate, and octyl alcohol + benzene . According to that reported by Guo et al, 2-pentanone and n -pentanol are the most suitable ketones and alcohols solvents, respectively.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Extraction of Hydroquinone from Aqueous Solution with Solvent Mixture of 2-Pentanone and n-Pentanol: Liquid–Liquid Equilibria and Data Correlation

et al. 2018

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The synergistic effect for a solvent mixture of 2-pentanone and n-pentanol to extract hydroquinone from aqueous solution was investigated. Liquid–liquid equilibria data for the quaternary (2-pentanone + n-pentanol + hydroquinone + water) system were measured under atmospheric pressure at 298.2 K, using various compositions of solvent mixture. The tie-line length was calculated to estimate the size of the immiscibility zone. The distribution coefficient and separation factor were calculated to evaluate the extraction efficiencies. The experimental data were correlated with NRTL and UNIQUAC models, and the corresponding binary interaction parameters were obtained.

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Section: Introductionmentioning

confidence: 99%

Synergistic Extraction of Hydroquinone from Aqueous Solution with Solvent Mixture of 2-Pentanone and n-Pentanol: Liquid–Liquid Equilibria and Data Correlation

et al. 2018

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“…Therefore, synergistic can be regarded as a good pathway to improve extraction efficiency. 19,20 Guo et al 21 reported that alcohol and benzene, 23 ethers, 25 ketones, 24 esters, 22 and so on have a synergistic extraction effect on phenols. Liquid−liquid equilibrium (LLE) data of the quaternary system (DIPE + n-pentanol + phenol + water) are necessary because it is rarely reported and is indispensable for separation process design.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the single-solvent DIPE, the mixed solvent has the desired extraction efficiency. Therefore, synergistic can be regarded as a good pathway to improve extraction efficiency. , Guo et al reported that alcohol and benzene, ethers, ketones, esters, and so on have a synergistic extraction effect on phenols.…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria for the Quaternary System: Diisopropyl Ether + n-Pentanol + Phenol + Water at 298.15 K

2020

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The synergistic extraction of phenol from aqueous solution with diisopropyl ether (DIPE) and n-pentanol was studied at 298.15 K under 101.3 kPa. The liquid−liquid equilibrium (LLE) data of the quaternary system (DIPE + n-pentanol + phenol + water) were studied using several proportions of mixed solvents, and the data of the ternary system (DIPE + phenol + water) were supplemented. Compared with single-solvent DIPE or n-pentanol, the extraction effect of the mixture (DIPE + n-pentanol) on phenol was significantly improved. The extraction efficiency was evaluated by calculating the distribution (D) and separation coefficient (S). Furthermore, the experimental LLE data were regressed with NRTL and UNIQUAC thermodynamic models to obtain the corresponding binary interaction parameters. The difference between the calculated value and the experimental value is less than 2%, calculated by relative root mean square deviation, indicating that the calculated and experimental results are in good agreement.

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“…The metal/ligand complexes were proposed to form reverse micelles. 24,25 To explore more green and practical reaction systems, Horner−Wadsworth−Emmons (HWE) reaction of various phosphonates proceeded in the TLPTC system in our previous research. 26,27 For HWE reaction of "weakly acidic" substrates in the TLPTC system, it was found that the bond-forming reaction occurred both in the third phase and the organic phase.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Process for the Hydroxide-Initiated Reaction of the “Weakly Acidic” Substrate in the Third-Liquid Phase-Transfer Catalytic System

Zhao

Sun³

et al. 2018

Ind. Eng. Chem. Res.

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Generation processes of the third phase and the carbanion for Horner–Wadsworth–Emmons (HWE) reaction of the “weakly acidic” substrate in the third-liquid phase-transfer catalysis (TLPTC) system were investigated. The third phase consisted of Et2PO4 – (diethyl phosphate anion), Br– and TBA+ (tetrabutylammonium), and molar content of Et2PO4 – was 6.65 times greater than that of TBA+. The true catalyst was the complex of TBA+Et2PO4 – and TBAB. Excess Et2PO4 – could be associated with TBA+Et2PO4 –, resulting in generation of the third phase. The “true” catalyst showed a higher catalytic activity and the reaction equilibrium constant for the third-phase cycle was 26 times greater than that for the organic-phase cycle. Results from background reaction, interfacial tension, and hydrogen–deuterium exchange reaction experiments suggested that the phosphonate were deprotonated by “naked” OH–, without help of the catalyst. These novel generation processes of the third phase and the carbanion were key factors for this efficient TLPTC system.

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Synergistic Effect of Acid–Base Coupling Bifunctional Ionic Liquids in Impregnated Resin for Rare Earth Adsorption

Cited by 38 publications

References 39 publications

Synergistic Extraction of Hydroquinone from Aqueous Solution with Solvent Mixture of 2-Pentanone and n-Pentanol: Liquid–Liquid Equilibria and Data Correlation

Synergistic Extraction of Hydroquinone from Aqueous Solution with Solvent Mixture of 2-Pentanone and n-Pentanol: Liquid–Liquid Equilibria and Data Correlation

Liquid–Liquid Equilibria for the Quaternary System: Diisopropyl Ether + n-Pentanol + Phenol + Water at 298.15 K

Catalytic Process for the Hydroxide-Initiated Reaction of the “Weakly Acidic” Substrate in the Third-Liquid Phase-Transfer Catalytic System

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