Separation of phenols from lignin pyrolysis oil using ionic liquid

Laetitia, Cesari; Canabady-Rochelle, Laetitia; Mutelet, Fabrice

doi:10.1016/j.seppur.2018.07.083

Cited by 53 publications

(21 citation statements)

References 51 publications

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“…The current extraction methods of high-purity EMP and/or most of the phenolic compounds mainly consist of distillation/rectification, 7 , 9 organic solvent extraction, 10 resin adsorption, 11 porous material adsorption, 12 ionic liquid extraction, 13 and supercritical fluid extraction. 14 However, some of them have various degrees of defects including insufficient purity, high cost, or safety issues.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Route for Separating and Purifying 4-Ethyl-2-methoxyphenol Based on the Reaction Mechanism between the Chemical and Calcium Ion

Yin

Wang

et al. 2021

ACS Omega

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Based on the characteristic that Ca2+ can react with 4-ethyl-2-methoxyphenol (EMP) to form a complexation with a phenol–calcium ratio of 4:1, a new extraction and purification method of EMP is developed for the first time in this work. At an optimum purification condition, 99.60% purity of EMP can be obtained through a reaction and decomposition operation. By combining a variety of characterizations, which consist of in situ Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance (NMR), inductively coupled plasma optical emission spectrometer (ICP-OES), gas chromatography–mass spectrometry (GC–MS)/flame ionization detector (FID), elemental analysis, and thermogravimetric analysis, the reaction mechanism of the coordination process is studied. It is demonstrated that there are three stages of the coordination reaction between Ca2+ and EMP. A neutralization reaction occurs in the first stage, while the second stage is a mixing reaction stage including neutralization and coordination reaction. When the reaction proceeds to the third stage, another coordination reaction occurs. Furthermore, phenol and ethanol are added as impurities in EMP. EMP with a purity of more than 99.50% can be obtained using this purification method. It confirms that this efficient method can achieve a good purification effect even for EMP solutions with complicated components.

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Section: Introductionmentioning

confidence: 99%

Development of a New Route for Separating and Purifying 4-Ethyl-2-methoxyphenol Based on the Reaction Mechanism between the Chemical and Calcium Ion

Yin

Wang

et al. 2021

ACS Omega

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“…In recent years, ionic liquids, which behave high extraction ability of phenolic compounds, have become the focus of many studies. [11][12][13][14] Mathews et al 15 used 1-ethyl-3-methyl imidazolium cyanoborohydride and 1-butyl-3-methyl imidazolium hexafluorophosphate to remove phenol from organic solvent mixtures (benzene + toluene + hexane); the result shows that 1-ethyl-3-methyl imidazolium cyanoborohydride has the higher extraction efficiency of phenol (95%). However, the preparation of most ionic liquids is concerned with ion exchange or neutralization, and the process is complicated.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, this method also has problems of large reagent consumption and low extraction efficiency. In recent years, ionic liquids, which behave high extraction ability of phenolic compounds, have become the focus of many studies 11–14 . Mathews et al 15 used 1‐ethyl‐3‐methyl imidazolium cyanoborohydride and 1‐butyl‐3‐methyl imidazolium hexafluorophosphate to remove phenol from organic solvent mixtures (benzene + toluene + hexane); the result shows that 1‐ethyl‐3‐methyl imidazolium cyanoborohydride has the higher extraction efficiency of phenol (95%).…”

Section: Introductionmentioning

confidence: 99%

Separation of phenolic compounds from oil mixtures by betaine‐based deep eutectic solvents

Xie

Liu

et al. 2020

Asia-Pacific J Chem Eng

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Separation of phenolic compounds from coal tar is of both economic and technological interest in the processing of coal tar. In this work, three deep eutectic solvents (DES) of betaine-glycerol, betaine-DL-lactic acid, and betaine-levulinic acid were formed and used to extract phenolic compounds from model coal tar. The effects of extraction time, temperature, initial phenol content, and mass ratio of DES to phenol on extraction were investigated. Then, the extraction and formation mechanisms of extractant were studied by the experimental and simulation methods. In addition, the neutral oil entrainment and the recycling of DES were also investigated. The results showed that phenol could be efficiently extracted in short time by three DES and the temperature had little effect on phenol extraction. Fourier transform infrared spectroscopy and deformation charge density indicated that the three DES are formed with hydrogen bonding interaction, the hydrogen bond acceptor and hydrogen bond donor of DES can form hydrogen bonding with phenol, respectively, and then synergistic extract phenol from model oil. The betaine-glycerol (Bet-Gly) was determined to be the preferable solvent with the extraction efficiency of 94.6% and 5.2% neutral oil entrainment under optimal conditions. It is an advantageous extractant in the separation of phenolic compounds from coal tar.

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“…With similar outcomes, there is also the possibility to generate bio-oil fractions through pyrolysis with two or more steps [165], supercritical CO 2 fractioning [166][167][168], or separations using ionic liquids [169,170].…”

Section: Applications Of Bio-oil As Chemical Source and Its Refinement Strategiesmentioning

confidence: 99%

Bio-Oil: The Next-Generation Source of Chemicals

et al. 2022

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Bio-oil, although rich in chemical species, is primarily used as fuel oil, due to its greater calorific power when compared to the biomass from which it is made. The incomplete understanding of how to explore its chemical potential as a source of value-added chemicals and, therefore, a supply of intermediary chemical species is due to the diverse composition of bio-oil. Being biomass-based, making it subject to composition changes, bio-oil is obtained via different processes, the two most common being fast pyrolysis and hydrothermal liquefaction. Different methods result in different bio-oil compositions even from the same original biomass. Understanding which biomass source and process results in a particular chemical makeup is of interest to those concerned with the refinement or direct application in chemical reactions of bio-oil. This paper presents a summary of published bio-oil production methods, origin biomass, and the resulting composition.

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Separation of phenols from lignin pyrolysis oil using ionic liquid

Cited by 53 publications

References 51 publications

Development of a New Route for Separating and Purifying 4-Ethyl-2-methoxyphenol Based on the Reaction Mechanism between the Chemical and Calcium Ion

Development of a New Route for Separating and Purifying 4-Ethyl-2-methoxyphenol Based on the Reaction Mechanism between the Chemical and Calcium Ion

Separation of phenolic compounds from oil mixtures by betaine‐based deep eutectic solvents

Bio-Oil: The Next-Generation Source of Chemicals

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