Thermal stability of choline chloride deep eutectic solvents by TGA/FTIR-ATR analysis

Delgado‐Mellado, Noemí; Larriba, Marcos; Navarro, Pablo; Rigual, Victoria; Ayuso, Miguel; García, Julián; Rodrı́guez, Francisco

doi:10.1016/j.molliq.2018.03.076

Cited by 367 publications

(198 citation statements)

References 33 publications

Supporting

Mentioning

163

Contrasting

Order By: Relevance

“…The characteristic peaks of ChCl/EG DES match refs. well. With regard to ChCl/EG DES, the typical broadband between 3600 and 3200 cm −1 is indexed to the stretching of OH bond, which manifests the formation of HBs in the ChCl/EG DES .…”

Section: Resultsmentioning

confidence: 91%

CO₂‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

Lin

Gong

et al. 2019

Small

View full text Add to dashboard Cite

CO2 capture and sequestration is an energy‐intensive industry to deal with the global greenhouse effect. Membrane separation is considered a cost‐effective method to mitigate the emission of CO2. Though good separation performance and stability have been reported, supported ionic liquid membranes are still not widely applied for CO2 separation due to the high cost. As a novel analogous solvent to ionic liquid, deep eutectic solvent retains the excellent merits of ionic liquid and is cheap with facile preparation. Herein, a highly CO2‐philic separation membrane is constructed by nanoconfining choline chloride/ethylene glycol (ChCl/EG) deep eutectic solvent into graphene oxide nanoslits. Molecular dynamic simulation results indicate that the confinement makes a difference to the structure of the nanoconfined ChCl/EG liquid from their bulk, which remarkably facilitates CO2 transport. By tuning the molar ratio of ChCl/EG and thickness of the membrane, the resultant membrane exhibits outstanding separation performance for CO2 with excellent selectivity over other light gases, good long‐term durability, and thermal stability. This makes it a promising membrane for selective CO2 separation.

show abstract

Section: Resultsmentioning

confidence: 91%

CO₂‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

Lin

Gong

et al. 2019

Small

View full text Add to dashboard Cite

show abstract

“…The first question that arises is, therefore, whether the increase in the yield of the extraction process is actually due to the influence of the presence of eutectics. In addition, according to the results published so far, it was found that the use of DES/NADES at higher temperatures (which are usually case in SWE) have some limitations with respect to their thermal stability [162,163]. Finally, the purification of the extract in the presence of DES as the co-solvent could be considerably difficult.…”

Section: New Trends In Extractions Of Bioactive Compoundsmentioning

confidence: 99%

Innovative Extraction Techniques Using Deep Eutectic Solvents and Analytical Methods for the Isolation and Characterization of Natural Bioactive Compounds from Plant Material

Ivanović

Razboršek

Kolar

2020

Plants

124

View full text Add to dashboard Cite

The growing interest of the food, pharmaceutical and cosmetics industries in naturally occurring bioactive compounds or secondary plant metabolites also leads to a growing demand for the development of new and more effective analysis and isolation techniques. The extraction of bioactive compounds from plant material has always been a challenge, accompanied by increasingly strict control requirements for the final products and a growing interest in environmental protection. However, great efforts have been made in this direction and today a considerable number of innovative extraction techniques have been developed using green, environmentally friendly solvents. These solvents include the deep eutectic solvents (DES) and their natural equivalents, the natural deep eutectic solvents (NADES). Due to their adjustable physical-chemical properties and their green character, it is expected that DES/NADES could be the most widely used solvents in the future, not only in extraction processes but also in other research areas such as catalysis, electrochemistry or organic synthesis. Consequently, this review provided an up-to-date systematic overview of the use of DES/NADES in combination with innovative extraction techniques for the isolation of bioactive compounds from various plant materials. The topicality of the field was confirmed by a detailed search on the platform WoS (Web of Science), which resulted in more than 100 original research papers on DES/NADES for bioactive compounds in the last three years. Besides the isolation of bioactive compounds from plants, different analytical methods are presented and discussed.

show abstract

“…However, our EPR study indicates the possibility of participation of choline derivatives in secondary radical reactions. To the best of our knowledge, in contrast to electrochemical, thermal, and chemical degradation studies of choline‐based DESs, photostability has not been previously examined. Thus, the effect of UV light needs to be investigated in detail, bearing in mind the wide possibility of applications of choline DESs/NADESs/LTTMs, for example, in the processing of natural compounds and biocatalysis …”

mentioning

confidence: 99%

High‐Molecular‐Weight Polyampholytes Synthesized via Daylight‐Induced, Initiator‐Free Radical Polymerization of Renewable Itaconic Acid

Mielczarek

Łabanowska

Kurdziel

et al. 2020

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Herein, it is reported for the first time that when mixed with choline chloride, itaconic acid (IA), normally a low‐reactive vinyl monomer, undergoes initiator‐free radical polymerization under normal daylight. Furthermore, the process results in the formation of abnormally high‐molecular‐weight poly(itaconic acid) derivatives with Mw greater than ≈800 000 g mol−1. Detailed 1D/2D NMR studies indicate that the polymers have two types of ionizable moieties, that is, anionic carboxylic and cationic choline ester groups in an average molar ratio of 12:1. Potentiometric titration shows polyampholyte behavior of the polymers. Tentative mechanistic studies reveal that the daylight‐induced polymerization is initiated by species generated via interactions of near UV light with IA. However, EPR findings show that choline also participates in secondary radical reactions. The obtained polyampholytes are useful bio‐based materials for fast and straightforward fabrication of polymer–clay nanocomposite hydrogels with excellent mechanical properties.

show abstract

Thermal stability of choline chloride deep eutectic solvents by TGA/FTIR-ATR analysis

Cited by 367 publications

References 33 publications

CO₂‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

CO₂‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

Innovative Extraction Techniques Using Deep Eutectic Solvents and Analytical Methods for the Isolation and Characterization of Natural Bioactive Compounds from Plant Material

High‐Molecular‐Weight Polyampholytes Synthesized via Daylight‐Induced, Initiator‐Free Radical Polymerization of Renewable Itaconic Acid

Contact Info

Product

Resources

About

Thermal stability of choline chloride deep eutectic solvents by TGA/FTIR-ATR analysis

Cited by 367 publications

References 33 publications

CO2‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

CO2‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

Innovative Extraction Techniques Using Deep Eutectic Solvents and Analytical Methods for the Isolation and Characterization of Natural Bioactive Compounds from Plant Material

High‐Molecular‐Weight Polyampholytes Synthesized via Daylight‐Induced, Initiator‐Free Radical Polymerization of Renewable Itaconic Acid

Contact Info

Product

Resources

About

CO₂‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits

CO₂‐Philic Separation Membrane: Deep Eutectic Solvent Filled Graphene Oxide Nanoslits