Bibliographies thématiques / Deep Eutetic Solvent

Littérature scientifique sur le sujet « Deep Eutetic Solvent »

Auteur : Grafiati
Publié le 7 juillet 2024
Mis à jour le 7 juillet 2024

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Articles de revues sur le sujet "Deep Eutetic Solvent"

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Liu, Xiangwei, Qian Ao, Shengyou Shi et Shuie Li. « CO2 capture by alcohol ammonia based deep eutectic solvents with different water content ». Materials Research Express 9, no 1 (1 janvier 2022) : 015504. http://dx.doi.org/10.1088/2053-1591/ac47c6.

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Abstract The existing CO2 absorption by deep eutectic solvents is limited by the unavoidable water absorption problem during use. In this study, we prepared three deep eutectic solvents with different alcohol aminations and added different water contents to discuss the effect of water content on the absorption of carbon dioxide by deep eutectic solvents. All deep eutectic solvents have a low melting point at room temperature as a liquid and have high thermal stability, where the choline chloride-diethanolamine deep eutectic solvents have a high viscosity. Anhydrous choline chloride-monoethanolamine deep eutectic solvents have the largest CO2 absorption, reaching 0.2715 g g−1, and the absorption of CO2 by anhydrous choline chloride-N-methyldiethanolamine deep eutectic solvents is only 0.0611 g g−1. Water content inhibited the absorption of CO2 in primary amine and secondary amine systems, whereas it enhanced the absorption of CO2 in tertiary amine systems, which was related to the reaction process of deep eutectic solvent and CO2.
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Thakur, Ajay, Monika Verma, Ruchi Bharti et Renu Sharma. « Recent Advances in Utilization of Deep Eutectic Solvents : An Environmentally Friendly Pathway for Multi-component Synthesis ». Current Organic Chemistry 26, no 3 (février 2022) : 299–323. http://dx.doi.org/10.2174/1385272826666220126165925.

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Abstract: With the increasing analysis of saving the environment, the researchers demonstrated much effort to replace toxic chemicals with environmentally benign ones. Eutectic mixtures are those solvents that fulfill the criteria of green solvents. The synthesis of organic compounds in the chemical and pharmaceutical industries makes it necessary to find unconventional solvents that cause no harmful impact on health parameters. This review showed that using deep eutectic mixture-based solvents to overcome the hazardous effects of harmful volatile organic solvents over the past few years has gained much more appeal. In most applications, deep eutectic mixtures are used for a solvent or co-solvent role, as they are easy to use, easy dissolution of reactants, and non-evaporative nature. However, deep eutectic mixtures have also been investigated as catalysts, and this dual functionality has much scope in the future, as a significantly less range of deep eutectic mixtures is utilized for this.
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Manurung, R., Taslim et A. G. A. Siregar. « Deep Eutectic Solvents Based Choline Chloride for Enzymatic Biodiesel Production from Degumming Palm Oil ». Asian Journal of Chemistry 32, no 4 (25 février 2020) : 733–38. http://dx.doi.org/10.14233/ajchem.2020.22193.

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Deep eutectic solvents (DESs) have numerous potential applications as cosolvents. In this study, use of DES as organic solvents for enzymatic biodiesel production from degumming palm oil (DPO) was investigated. Deep eutectic solvent was synthesized using choline chloride salt (ChCl) compounds with glycerol and 1,2-propanediol. Deep eutectic solvent was characterized by viscosity, density, pH and freezing values, which were tested for effectiveness by enzymatic reactions for the production of palm biodiesel with raw materials DPO. Deep eutectic solvent of ChCl and glycerol produced the highest biodiesel yield (98.98%); weight of DES was only 0.5 % of that of the oil. In addition, the use of DES maintained the activity and stability of novozym enzymes, which was assessed as the yield until the 6th usage, which was 95.07 % biodiesel yield compared with the yield without using DES. Hence, using DES, glycerol in enzymatic biodiesel production had high potentiality as an organic solvent for palm oil biodiesel production
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Nahar, Yeasmin, et Stuart C. Thickett. « Greener, Faster, Stronger : The Benefits of Deep Eutectic Solvents in Polymer and Materials Science ». Polymers 13, no 3 (30 janvier 2021) : 447. http://dx.doi.org/10.3390/polym13030447.

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Deep eutectic solvents (DESs) represent an emergent class of green designer solvents that find numerous applications in different aspects of chemical synthesis. A particularly appealing aspect of DES systems is their simplicity of preparation, combined with inexpensive, readily available starting materials to yield solvents with appealing properties (negligible volatility, non-flammability and high solvation capacity). In the context of polymer science, DES systems not only offer an appealing route towards replacing hazardous volatile organic solvents (VOCs), but can serve multiple roles including those of solvent, monomer and templating agent—so called “polymerizable eutectics.” In this review, we look at DES systems and polymerizable eutectics and their application in polymer materials synthesis, including various mechanisms of polymer formation, hydrogel design, porous monoliths, and molecularly imprinted polymers. We provide a comparative study of these systems alongside traditional synthetic approaches, highlighting not only the benefit of replacing VOCs from the perspective of environmental sustainability, but also the materials advantage with respect to mechanical and thermal properties of the polymers formed.
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Owczarek, Katarzyna, Natalia Szczepanska, Justyna Plotka-Wasylka, Malgorzata Rutkowska, Olena Shyshchak, Michael Bratychak et Jacek Namiesnik. « Natural Deep Eutectic Solvents in Extraction Process ». Chemistry & ; Chemical Technology 10, no 4s (25 décembre 2016) : 601–6. http://dx.doi.org/10.23939/chcht10.04si.601.

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Developing new, eco-friendly solvents which would meet technological and economic demands is perhaps the most popular aspects of Green Chemistry. Natural deep eutectic solvents (NADES) fully meet green chemistry principles. These solvents offer many advantages including biodegradability, low toxicity, sustainability, low costs and simple preparation. This paper provides an overview of knowledge regarding NADES with special emphasis on extraction applications and further perspectives as truly sustainable solvents.
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Niftullayeva, S. A., Y. V. Mamedova et I. G. Mamedov. « Deep eutectic solvents based on glycerol as selective extractants for the recovery of aromatic hydrocarbons and petroleum acids from model fuel ». Proceedings of Universities. Applied Chemistry and Biotechnology 14, no 1 (27 mars 2024) : 129–34. http://dx.doi.org/10.21285/achb.907.

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The study set out to extract various types of hydrocarbons from model fuels using deep eutectic solvents based on glycerol. These solvents were synthesised by mixing glycerol as acting as a hydrogen bond donor with ammonium chloride or triethylammonium acetate [tea] [AcO]- acting as a hydrogen bond acceptor at room temperature in a volume ratio of 1:6. A mixture of n-decane and n-hexadecane was selected as components of the model fuel. For the extraction of mixtures of benzene, ethylbenzene (5%), p-, m-, o-cresol, fluorenone (3.5%) and petroleum acids (25%), these deep eutectic solvents were used at room temperature, as well as at a temperature of 60°C, and at atmospheric pressure. Extraction efficiency was evaluated by [1]NMR spectroscopy. The results demonstrated the complete single-stage extraction of p-, m- and o-cresols from the model fuel using the studied deep eutectic solvents. A deep eutectic solvent based on glycerol and triethylammonium acetate was found to have the highest extraction efficiency. The recovery rates for benzene, ethylbenzene, and fluorenone at room temperature are achieved in 3 hours of stirring (75, 25, and 53%, respectively). M- and o-cresols were fully recovered in 1 hour in a single step using a deep eutectic solvent based on triethylammonium acetate, while complete extraction of aromatic acids from a mixture of petroleum acids in model fuel was achieved using a deep eutectic solvent obtained by mixing ammonium chloride and glycerol.
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Vorobyova, Viktoria, et Margarita Skiba. « DEEP EUTECTIC SOLVENTS AS AN ADDITIVE IN MODIFICATION OF MEMBRANEFOR NANO- AND ULTRA- FILTRATION : PHYSIC-CHEMISTRY CHARACTERISTICS, FTIR STUDY AND ELECTROCHEMICAL BEHAVIOR ». WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 31, no 3 (22 décembre 2021) : 12–18. http://dx.doi.org/10.20535/2218-930032021239996.

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Deep eutectic solvents (DESs) are a new class of solvents that can offset some of the primary drawbacks of typical solvents and ionic liquids. They are synthesized by simply mixing the components that interact with each other through hydrogen bonds, and form a eutectic mixture with a melting point much lower than each component individually. Deep eutectic solvents is usually liquid at temperatures below 100 °C. Thanks to these great advantages, deep eutectic solvents is attracting more and more attention in many areas of research. Very recently, great attention has been paid to new pioneering attempts aiming at deep eutectic solvents into the field of chemical engineering, including membrane science and technology. Even if just a same works have been currently reported in applying deep eutectic solvents in membranes, the consideration on this new type of solvents is continuously growing. New deep eutectic solvents based on choline chloride (ChCl)–lactic acid (1:2 M ratio) was obtained and its electrochemical characteristics was studied. The synthesis of deep eutectic solvents was confirmed by FA nuclear magnetic resonance (NMR) spectrometry method. FTIR study provided further details into hydrogen bonding upon mixing. FTIR results confirmed that H-bonds, occurring between two components in deep eutectic solvents, were the main force leading to the eutectic formation. The frequency at 3221 cm−1 can be attributed to the oscillations of the O-H bond in the formation of OH-Cl-ChCl. The main physicochemical characteristics of deep eutectic solutions (density, pH) are determined. The electrochemical behavior was investigated of choline chloride (ChCl)–lactic acid deep eutectic solvent (DES) by cyclic voltammetry. The method of cyclic voltammetry found that the oxidation of deep eutectic solvents is fixed at a potential of Ea1 = 0.54 V.
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Li, Meiyu, Yize Liu, Fanjie Hu, Hongwei Ren et Erhong Duan. « Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments ». Processes 9, no 10 (24 septembre 2021) : 1716. http://dx.doi.org/10.3390/pr9101716.

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The environmental pollution of phenol-containing wastewater is an urgent problem with industrial development. Natural deep eutectic solvents provide an environmentally friendly alternation for the solvent extraction of phenol. This study synthesized a series of natural deep eutectic solvents with L-proline and decanoic acid as precursors, characterized by in situ infrared spectrometry, Fourier transform infrared spectrometry, hydrogen nuclear magnetic resonance spectrometry, and differential thermogravimetric analysis. Natural deep eutectic solvents have good thermal stability. The high-efficiency extraction of phenol from wastewater by natural deep eutectic solvents was investigated under mild conditions. The effects of natural deep eutectic solvents, phenol concentration, reaction temperature, and reaction time on phenol extraction were studied. The optimized extraction conditions of phenol with L-prolin/decanoic acid were as follows: molar ratio, 4.2:1; reaction time, 60 min; and temperature, 50 °C. Extraction efficiency was up to 62%. The number of extraction cycles can be up to 6, and extraction rate not less than 57%. The promising results demonstrate that natural deep eutectic solvents are efficient in the field of phenolic compound extraction in wastewater.
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Farajzadeh, Mir Ali, Mohammad Reza Afshar Mogaddam et Mahdi Aghanassab. « Deep eutectic solvent-based dispersive liquid–liquid microextraction ». Analytical Methods 8, no 12 (2016) : 2576–83. http://dx.doi.org/10.1039/c5ay03189c.

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Di Carmine, Graziano, Andrew P. Abbott et Carmine D'Agostino. « Deep eutectic solvents : alternative reaction media for organic oxidation reactions ». Reaction Chemistry & ; Engineering 6, no 4 (2021) : 582–98. http://dx.doi.org/10.1039/d0re00458h.

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Thèses sur le sujet "Deep Eutetic Solvent"

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Miyazaki, Gabrielly. « Modeling solvent selection for biorefinery application ». Electronic Thesis or Diss., Université Paris sciences et lettres, 2023. http://www.theses.fr/2023UPSLM067.

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Dans le contexte des bioraffineries, le choix d'un solvant approprié est crucial pour des processus de séparation durables et économiquement viables. Une approche globale intégrant des critères tels que l'Analyse du Cycle de Vie, l'analyse de la toxicité, la régénération énergétiquement efficace du solvant, des pertes minimales de solvant et une haute sélectivité est nécessaire. Cependant, le choix devient complexe lorsqu'il s'agit des solvants eutectiques profonds (Deep Eutectic Solvents - DES) en raison du manque de données expérimentales complètes, en particulier concernant les propriétés thermodynamiques et physiques critiques telles que l'équilibre de phase, la densité, la viscosité, la capacité thermique, la conductivité thermique, la solubilité, et autres. Pour combler cette lacune, cette recherche propose de générer des données expérimentales essentielles (telles que la densité, la viscosité et les propriétés d'équilibre de phase) pour optimiser les modèles théoriques. De plus, ce travail propose une approche de sélection de solvant basée sur la modélisation des propriétés thermodynamiques en utilisant le modèle COSMO-SAC (COnductor-like Screening MOdel segment activity coefficient). L'étude vise à améliorer le modèle COSMO-SAC en examinant les variables computationnelles, en établissant une base de données de profils sigma PSL et en affinant les prédictions grâce aux contributions enthalpiques, entropiques et intermoléculaires. Malgré les défis rencontrés dans la prédiction précise des coefficients d'activité en dilution infinie (IDAC) pour les systèmes DES, une approche d'optimisation réduit considérablement les écarts, offrant ainsi une voie prometteuse pour la sélection précise du solvant dans les processus de bioraffinerie
In the context of biorefineries, selecting an appropriate solvent is crucial for sustainable and economically viable separation processes. A comprehensive approach integrating criteria like Life Cycle Assessment , toxicity analysis, energy-efficient solvent regeneration, minimal solvent losses, and high selectivity is required. However, the choice becomes challenging when considering Deep Eutectic Solvents (DES) due to a lack of comprehensive experimental data, particularly regarding critical thermodynamic and physical properties like phase equilibrium, density, viscosity, heat capacity, thermal conductivity, solubility, and more. To bridge this gap, this research proposes generating essential experimental data (such as density, viscosity, and phase equilibrium properties) to optimize theoretical models. Moreover, this work proposes a solvent screening approach based on modeling thermodynamic properties using the (COnductor-like Screening MOdel segment activity coefficient (COSMO-SAC) model. The study aims to enhance the COSMO-SAC model by investigating computational variables, establishing a PSL sigma-profile database, and refining predictions through enthalpic, entropic, and intermolecular contributions. Despite encountering challenges in accurately predicting activity coefficients at infinite dilution (IDAC) for DES systems, an optimization approach significantly reduces deviations, offering a promising route for precise solvent selection in biorefinery processes
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Al-Murshedi, Azhar Yaseen Muhi. « Deep eutectic solvent-water mixtures ». Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42799.

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Salt forms homogeneous solutions with water; most studies to date have assumed that deep eutectic solvents (DES) and water form similar homogeneous systems. Several studies have used quantum mechanical and molecular dynamic simulations to prove that this is indeed the case. Study of physical properties of ionic liquid-water/ systems have revealed some anomalous observations without considering the fact that there may be micro- or nano-heterogeneities with in these systems. The key aim of this project is to demonstrate the heterogeneity of DES-water mixtures by careful measurement of physical properties such as viscosity, conductivity, surface tension and density. The first stage of the study involved the investigation of the above physical properties for pure DESs and DESs mixed with different amounts water to investigate if these were homogeneous or heterogeneous in nature. Analysis of these data showed some characteristics of heterogeneity, the extent of which depends on the number of hydrogen bond donors in the pure DES. Dynamic light scattering was used to determine the extent of the heterogeneity in the three DESs under investigation, namely Ethaline, Glyceline and Reline. Pulsed Field Gradient NMR (PFG-NMR) and electrochemical techniques have been used to study diffusion coefficients in DES-water mixtures. The results of PFG-NMR showed that the behaviour of DES-water mixtures was non-Stokesian, hence DES-water mixtures have water-dominant and some ion-dominant domains. Electrochemical studies also showed the same trends due to the electroactive species partitioning between the different phases. It is thought that Reline-water mixtures are more heterogeneous than the corresponding Ethaline and Glyceline systems. Electroplating in DES-water mixtures has previously been shown to improve the quality of deposited films. The electrodeposition of copper from Ethaline was studied as a function of water content. It was found that water affected the speciation of copper in solution.
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Saleem, Saima. « Electropolishing in deep eutectic solvents ». Thesis, University of Leicester, 2014. http://hdl.handle.net/2381/28577.

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A fundamental study of electropolishing of stainless steel and nickel based single crystal superalloy CMSX-4 in type III deep eutectic solvent based on choline chloride and hydrogen bond donor i.e. mixture of choline chloride with ethylene glycol in a 1:2 molar ratio was carried out and had been found to be competitive with the current concentrated mixture of inorganic acid electrolytes. Life cycle study was conducted to define the key process controlling factors like electrochemical stability, current efficiency, effect of history of electrolyte, recycling of ionic liquid and its reuse for electropolsihing. The electrochemical techniques like linear sweep anodizing curves, chronoamperometery and galvanostatic studies revealed that electropolishing in 1:2 ChCl:EG proceeded through the formation of viscous layer on the surface of the substrate similar to electropolishing in inorganic acid electrolytes. The optimization of electropolishing process was carried out using the experimental design strategies, Fractional Factorial Design (FFD) and found that electropolishing variables like addition of water, oxalic acid, electropolishing bath temperature, time and potential had positive impact on the surface finish. Surface texture measurements such as surface roughness and surface overlayer morphology of electropolished stainless steel and CMSX-4 was carried out using the microscopic techniques, atomic force microscopy (AFM), scanning electron microscopy (SEM), field emission scanning electron microscopy (FE-SEM) and digital holographic microscopy (DHM) and found to be the function of electropolishing time. Effect of electropolishing on corrosion behaviour of stainless steel was studied using the electrochemical techniques like open circuit potential measurements (OCP), potentiodynamic polarization curves and gravimeteric method showed improvement in the general or pitting corrosion of the workpiece. Nickel based superalloy was also successfully electropolished to remove the casting scales. The dissolution of two phases was found to be the function of electrochemical regime i.e. applied potential and current density.
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Al-Bassam, Ahmed Z. Mohamed Hussein. « Mineral processing using deep eutectic solvents ». Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42876.

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Processing sulfur containing minerals is one of the biggest sources of acute anthropogenic pollution particularly in the form of acid mine drainage. Sulfur-based minerals are generally roasted to convert them to the oxide, producing SO2 or leached in acid producing H2S. This study attempts to show an innovative method for processing sulfide-based minerals using a deep eutectic solvent (DES), Ethaline, which is a mixture of choline chloride and ethylene glycol. It is shown that pyrite can be solubilised by both electrochemical oxidation and reduction in a DES. A novel method is demonstrated to investigate the redox properties of minerals using a paste made from the mineral powder in a DES. The first bulk electrochemical dissolution of pyrite is shown without the formation of H2S or SO2. The solubilised species are investigated using cyclic voltammetry UV-vis spectroscopy and EXAFS. In all cases for the iron minerals studied, it was found that the electrochemistry of the counter ion and not the metal, controlled the ease of dissolution. It is also shown that the soluble species, including elements such as arsenic, can be recovered electrochemically which could potentially decrease acid mine drainage. The electrochemical properties of other iron–sulfur and iron–arsenic minerals are also presented and compared to those of pyrite. The final part of this study uses different cell designs in an endeavour to optimise the space-time-yield of the electrochemically assisted digestion of jarosite. It was found that the electrochemical digestion of material was up to 20 faster than the chemical dissolution. It was, however found that formation of insoluble precipitates, particularly of lead and zinc sulfates affected the performance of the separator membranes and this could decrease the yield of digested metal. The presence of high concentrations of iron salts led to passivating films on the zinc surface during cementation.
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de, la Fuente Revenga Mario. « Enzyme Catalysis in Deep Eutectic Solvents ». Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-235131.

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Ola, Pius Dore. « Solvent extraction and liquid membrane containing ionic liquids and deep eutectic solvents for metal separation ». Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13097323/?lang=0, 2018. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13097323/?lang=0.

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Klein, Jeffrey M. « Electrode-Electrolyte and Solvent-Solute Interfaces of Concentrated Electrolytes : Ionic Liquids and Deep Eutectic Solvents ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1620213066452923.

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MELI, Alessandro. « DEEP EUTECTIC SOLVENTS E LIQUIDI IONICI : SOLVENTI PER LO SVILUPPO DI PROCESSI ECO-COMPATIBILI ». Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395244.

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L’obiettivo di questi tre anni di Dottorato è stato lo studio e l’utilizzo nuovi solventi di reazione in grado di sostituire i solventi organici classici. In particolare sono stati studiati i Deep Eutectic Solvent (DES) e le miscele di Liquidi Ionici (IL). I DES sono stati utilizzati come solventi per lo studio di reazioni organiche, usate per la formazione di nuovi legami C-C. Nello specifico sono state studiate la reazione di Diels-Alder, e diverse reazioni di coupling C-C catalizzate da Pd. In seguito, i DES sono stati utilizzati per la formazione di nuovi gel supramolecolari, chiamati eutectogel. Questi gel sono stati formati usando come gelator amminoacidi naturali, consentendo quindi di ottenere gel interamente costituiti da composti non tossici. Questi materiali sono stati usati come fasi adsorbenti per la rimozione di coloranti cationici da soluzioni acquose. Infine, miscele di IL sono state utilizzate per la conversione di tre diversi carboidrati in 5-HMF, ottenendo rese soddisfacenti specialmente per la conversione del fruttosio.
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Ros, Ñíguez Diego. « Deep Eutectic Solvents : platform for asymmetric catalysis ». Doctoral thesis, Universidad de Alicante, 2019. http://hdl.handle.net/10045/99567.

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Capítulo 1. Adiciones Michael asimétricas organocatalizadas en líquidos eutécticos. Siguiendo los principios de la “Química Verde” se desarrolló un sistema catalítico basado en disolventes eutécticos y organocatalizadores quirales derivados de 2-amino benzimidazol. Este nuevo sistema fue empleado para catalizar la adición enantioselectiva de compuestos de 1,3-dicarbonílicos a β-nitroestirenos. El procedimiento evita el uso de disolventes orgánicos volátiles tóxicos como medio reacción, proporcionando acceso a moléculas quirales altamente funcionalizadas de forma selectiva y eficiente. Además, la reacción puede realizarse a una escala de gramos y a su vez este sistema catalítico es fácilmente reciclable y reutilizable durante cuatro ciclos, lo que da lugar a un procedimiento limpio, económico, sencillo y escalable que cumple la mayoría de los criterios necesarios para ser un proceso medioambientalmente benigno y sostenible. Los estudios de RMN realizados a la mezcla organocatalizador-líquido eutéctico han confirmado el papel clave de los enlaces de hidrógeno entre el disolvente y el organocatalizador quiral, que permiten su recuperación y la reciclabilidad del sistema. Capítulo 2. α-Aminación electrofílica asimétrica organocatalizada en líquidos eutécticos. Empleando el sistema catalítico basado en el uso de catalizadores quirales de 2-benzoimidazol y líquidos eutécticos se realizó la α-aminación enantioselectiva de compuestos de 1,3-dicarbonílicos. Con este procedimiento, se evita el uso de compuestos orgánicos volátiles tóxicos como medios de reacción. Las moléculas quirales altamente funcionalizadas sintetizadas, que son importantes en la síntesis de productos naturales, se sintetizaron mediante un protocolo eficiente y estereoselectivo. Además, la reacción puede llevarse a cabo para la síntesis de un gramo de producto, siendo posible el reciclaje del sistema catalítico durante al menos cinco ciclos de reacción consecutivos. Este procedimiento representa un método barato, simple, limpio y escalable que cumple con la mayoría de los principios para ser considerado un proceso medioambientalmente benigno y sostenible. Capítulo 3. Líquidos eutécticos quirales. Diferentes mezclas eutécticas basadas en prolina fueron empleadas en la adición Michael asimétrica de cetonas sobre nitroalquenos. En vista de los resultados, y los estudios de 1H-RMN realizados, se confirmó una relación entre la conversión y selectividad del proceso con la constante asociación de los componentes de la mezcla eutéctica. Con estos datos un nuevo disolvente eutéctico quiral a base de bromuro de (S)-N,N,N,-trimetil-1-(pirrolidin-2-il)-metanamina y glicerol fue diseñado y sintetizado con éxito. Este sistema catalítico se mostró eficiente en la adición Michael de ciclohexanona a β-nitroestirenos, obteniendo selectividades moderadas en condiciones suaves. El sistema catalítico eutéctico fue recuperado fácilmente y reciclado hasta cinco veces en la adición de ciclohexanona a β-nitroestireno sin pérdida significativa de actividad catalítica.
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Davis, Stefan John. « Deep eutectic solvents derived from inorganic salts ». Thesis, University of Leicester, 2016. http://hdl.handle.net/2381/37784.

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Mixtures of metal salts with complexing agents, such as urea, form liquids, which are known as deep eutectic solvents (DESs). This has previously been applied to metal salts such as ZnCl₂, AlCl₃ and CrCl₃.6H₂O. The aim of this thesis was to see if this model could be expanded to include alkali metal salts. Some of the hydrogen bond donors (HBDs) investigated were found to form liquid mixtures with a limited number of alkali metal salts, which showed melting temperatures below 25 °C. Utilising glycerol as a HBD exhibited the highest mutual solubility with the alkali metal salts of interest, therefore this study focussed on sodium salt:glycerol mixtures. Four sodium salts were chosen: NaBr, NaOAc, NaOAc.3H₂O or Na₂B₄O₇.10H₂O, which provided a range of fluidities and contained hydrates and anhydrous salts. The ionic conductivity and viscosity of these salts with glycerol were studied, and it was found that unlike previous studies of choline chloride with glycerol where the salt decreases the viscosity of glycerol, all of the sodium salts increased the viscosity of glycerol. This suggests that sodium salts have a structure making, kosmotropic effect, rather than structure breaking, chaotropic effect, on glycerol. This phenomenon is probably due to the high charge density of Na⁺, which coordinates to the glycerol. The ion transport properties and molecular dynamics of sodium salt:glycerol mixtures have been investigated at the microscopic level using nuclear magnetic resonance and electrochemical techniques. Self-diffusion coefficients of the components of the systems of interest were found to be 10⁻¹¹- 10⁻¹³ m² s⁻¹ range. T₁ relaxation times were investigated and all systems showed a transition from a diffusion-limited, slow molecular tumbling regime to a fast molecular, high mobility, tumbling regime. Poor solubility was experienced with a range of transition metal salt probes, which was attributed to complex ion speciation. It was concluded that the sodium salt:glycerol systems studied are not ideal for electrochemical applications. The ability of the salts to form viscous gels made them ideal plasticisers for starch. Starch DES mixtures were tested as a binder for medium density fibreboard (MDF). The properties of MDF samples were tested as a function of processing conditions and composition. Pilot scale production of plasticised starch MDF composites was successful, demonstrating the current industrial infrastructure can be utilised for large-scale production at a similar cost to MDF bound with urea formaldehyde resins.
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Livres sur le sujet "Deep Eutetic Solvent"

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Marcus, Yizhak. Deep Eutectic Solvents. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00608-2.

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Bajpai, Pratima. Deep Eutectic Solvents for Pretreatment of Lignocellulosic Biomass. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4013-1.

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Fourmentin, Sophie, Margarida Costa Gomes et Eric Lichtfouse, dir. Deep Eutectic Solvents for Medicine, Gas Solubilization and Extraction of Natural Substances. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-53069-3.

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Ramón, Diego J., et Gabriela Guillena, dir. Deep Eutectic Solvents. Wiley, 2019. http://dx.doi.org/10.1002/9783527818488.

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Marcus, Yizhak. Deep Eutectic Solvents. Springer, 2018.

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Guillena, Gabriela, et Diego J. Ramón. Deep Eutectic Solvents : Synthesis, Properties, and Applications. Wiley & Sons, Incorporated, John, 2019.

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Silvino dos Santos, Everaldo, Carlos Eduardo de Araújo Padilha, Francisco Canindé de Sousa Júnior et Nathália Saraiva Rios, dir. Deep Eutectic Solvents : Properties, Applications and Toxicity. Nova Science Publishers, 2022. http://dx.doi.org/10.52305/iwui3187.

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Santos, Everaldo Silvino dos. Deep Eutectic Solvents : Properties, Applications and Toxicity. Nova Science Publishers, Incorporated, 2022.

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Guillena, Gabriela, et Diego J. Ramón. Deep Eutectic Solvents : Synthesis, Properties, and Applications. Wiley-VCH Verlag GmbH, 2019.

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dos, Everaldo Silvino. Deep Eutectic Solvents : Properties, Applications and Toxicity. Nova Science Publishers, Incorporated, 2022.

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Chapitres de livres sur le sujet "Deep Eutetic Solvent"

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Marcus, Yizhak. « Introduction ». Dans Deep Eutectic Solvents, 1–11. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00608-2_1.

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Marcus, Yizhak. « The Variety of Deep Eutectic Solvents ». Dans Deep Eutectic Solvents, 13–44. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00608-2_2.

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Marcus, Yizhak. « Properties of Deep Eutectic Solvents ». Dans Deep Eutectic Solvents, 45–110. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00608-2_3.

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Marcus, Yizhak. « Applications of Deep Eutectic Solvents ». Dans Deep Eutectic Solvents, 111–51. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00608-2_4.

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Marcus, Yizhak. « Deep Eutectic Solvents in Extraction and Sorption Technology ». Dans Deep Eutectic Solvents, 153–83. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00608-2_5.

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Marcus, Yizhak. « Trends and Prospects for Deep Eutectic Solvents ». Dans Deep Eutectic Solvents, 185–91. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00608-2_6.

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Naik, Papu Kumar, Nikhil Kumar, Nabendu Paul et Tamal Banerjee. « Deep Eutectic Solvents ». Dans Deep Eutectic Solvents in Liquid–Liquid Extraction, 1–23. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003231158-1.

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Byrne, Emily L., Mark Gilmore, Leila Moura, Małgorzata Swadźba-Kwaśny et John D. Holbrey. « Hydrophobic Deep Eutectic Solvents ». Dans Environmental Chemistry for a Sustainable World, 157–81. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53069-3_5.

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Ramezani, Amir M., Yadollah Yamini et Raheleh Ahmadi. « Deep Eutectic Solvent-Based Microextraction ». Dans Microextraction Techniques in Analytical Toxicology, 221–37. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003128298-14.

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Holze, Rudolf. « Ionic conductance of deep eutectic solvents ». Dans Electrochemistry, 1–2. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1.

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Actes de conférences sur le sujet "Deep Eutetic Solvent"

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Effensi, Sahrul, Aida syarif et Irawan Irawan. « Purification of Raw Material and Biodiesel Products from Waste Oil with Deep Eutetic Solvent (DES) ». Dans 5th FIRST T1 T2 2021 International Conference (FIRST-T1-T2 2021). Paris, France : Atlantis Press, 2022. http://dx.doi.org/10.2991/ahe.k.220205.027.

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Hayyan, Adeeb. « Eutectic solvent as co-solvent for oil extraction from plant seeds ». Dans 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/niod6594.

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In this study, oil extraction form flaxseeds using n-hexane and novel co-solvent called deep eutectic solvents (DESs). DES is relativity green solvent in comparison to ionic liquids and they are alternative to organic solvent. Different organic solvents were screened and oil extraction operating conditions were optimized. The addition of DES to n-hexane can significantly reduce extraction temperature in comparison to n-hexane alone. Application of green solvents in oil extraction field can reduce the energy consumption and operational risks associated with the use of flammable organic solvents.
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Bhutani, Garima, Vivek Yadav, Anita Yadav et Arijit K. De. « Impulsive Stimulated Raman Spectroscopy Reveals Synergistic Effects in Binary Mixture of Deep Eutectic Solvents and an Organic Co-solvent ». Dans Laser Science. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/ls.2022.lw6f.4.

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In this work, synergistic effects or hydrogen bond acceptor - donor (HBA - HBD) interactions in the binary mixture of deep eutectic solvents (DESs) with organic co-solvent, are investigated using impulsive stimulated Raman spectroscopy (ISRS).
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Muryanto, Muryanto, Roni Maryana, Eka Triwahyuni, Yanni Sudiyani et Misri Gozan. « Furfural production using aqueous deep eutectic solvent ». Dans THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIAL AND TECHNOLOGY (ICAMT) 2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0122673.

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TULUPOVA, Anastasiia, Vasilii BURTSEV, Vaclav ŠVORČÍK et Oleksiy LYUTAKOV. « STABLE DEEP EUTECTIC SOLVENT DOPED WITH Metal nanoparticles ». Dans NANOCON 2021. TANGER Ltd., 2021. http://dx.doi.org/10.37904/nanocon.2021.4340.

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Kroon, M. C., et L. F. Zubeir. « Deep Eutectic Solvents for Sustainable CO2 Capture ». Dans Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/183258-ms.

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Prozhogina, Yu E. « THE EXTRACTION ABILITY OF DEEP EUTECTIC SOLVENTS ». Dans Современные тенденции развития технологий здоровьесбережения. Москва : Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт лекарственных и ароматических растений", 2022. http://dx.doi.org/10.52101/9785870191058_313.

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Popa-Tudor, Ioana, Victor Alexandru Faraon, Florin Oancea et Diana Constantinescu-Aruxandei. « Applications of Deep Eutectic Solvents for Lignin Extraction ». Dans Priochem 2021. Basel Switzerland : MDPI, 2022. http://dx.doi.org/10.3390/chemproc2022007036.

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Niawanti, Helda, Siti Zullaikah et M. Rachimoellah. « Purification of biodiesel by choline chloride based deep eutectic solvent ». Dans INTERNATIONAL SEMINAR ON FUNDAMENTAL AND APPLICATION OF CHEMICAL ENGINEERING 2016 (ISFAChE 2016) : Proceedings of the 3rd International Seminar on Fundamental and Application of Chemical Engineering 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4982280.

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Srinivasan, H., P. S. Dubey, V. K. Sharma, R. Biswas, S. Mitra et R. Mukhopadhyay. « Molecular dynamics of acetamide based ionic deep eutectic solvents ». Dans DAE SOLID STATE PHYSICS SYMPOSIUM 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5029015.

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Rapports d'organisations sur le sujet "Deep Eutetic Solvent"

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Yethiraj, Arun. Polymers in deep eutectic solvents. Office of Scientific and Technical Information (OSTI), mai 2022. http://dx.doi.org/10.2172/2281701.

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Trusheva, Boryana, Hristo Petkov, Milena Popova, Lyudmila Dimitrova, Maya Zaharieva, Iva Tsvetkova, Hristo Najdenski et Vassya Bankova. “Green” Approach to Propolis Extraction : Natural Deep Eutectic Solvents. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, juillet 2019. http://dx.doi.org/10.7546/crabs.2019.07.06.

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De Silva, Sammu. Understanding the solubility of metal salts and supporting electrolytes in Deep Eutectic Solvents. Office of Scientific and Technical Information (OSTI), avril 2024. http://dx.doi.org/10.2172/2335737.

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Sahoo, Abhisek, Thallada Bhaskar et Kamal K. Pant. Disintegration of lignocellulosic biomass using deep eutectic solvents : degradation kinetics and Py-GCMS study. Peeref, avril 2023. http://dx.doi.org/10.54985/peeref.2304p2942277.

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Cerdá-Bernad, Débora, Ioanna Pitterou, Andromachi Tzani, Anastasia Detsi et María José Frutos. Novel chitosan/alginate hydrogels as carriers of phenolic-enriched extracts from saffron floral by-products using natural deep eutectic solvents as green extraction media. Peeref, juin 2023. http://dx.doi.org/10.54985/peeref.2306p2939837.

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