Bibliographies thématiques / Eutetic Solvents

Littérature scientifique sur le sujet « Eutetic Solvents »

Auteur : Grafiati
Publié le 18 mai 2024

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Articles de revues sur le sujet "Eutetic Solvents"

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Semenova, M. V., I. S. Vasil’eva, A. I. Yaropolov et A. P. Sinitsyn. « Cane Pretreatment by Deep Eutetic Solvents to Increase its Reactivity During Enzymatic Hydrolysis with Cellulases ». Прикладная биохимия и микробиология 59, no 3 (1 mai 2023) : 253–59. http://dx.doi.org/10.31857/s0555109923030169.

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Cane was pretreated with a number of deep eutectic solvents (DES) based on choline chloride (ChCl) as a hydrogen bond acceptor; among hydrogen bond donors, lactic and oxalic acids (LacA and OxA, respectively) were the most effective. Substrate pretreatment conditions (ratio of DES-components, temperature and exposure time) were optimized, leading to the highest yield of reducing sugars (RS) and glucose during subsequent enzymatic hydrolysis with cellulase preparation based on Penicillium verruculosum. It was been established that in the case of a mixture of ChCl with LacA (the molar ratio of components is 1 : 5) pretreatment should be carried out at 80°С for 24 h, and in the case of a mixture of ChCl with OxA (1 : 1) – at 80°С for 6 hours. The degree of conversion of the pretreated substrate after 48 hours of hydrolysis in the presence of the enzyme preparation (EP) B537 was 80 and 86% by absolutely dry substances for selected mixtures of ChCl/LacA and ChCl/OxA, respectively.
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Xu, Tao, Xiaoyu Sui, Yue Meng, Debao Li, Chang Liu, Pengling Ge, Jicheng Liu, Cheng Yuan et Tingting Liu. « Application of circulating and pulsating ultrasonic extraction of lignans from Schisandra chinensis Baill fruits using deep eutetic solvents ». Industrial Crops and Products 214 (août 2024) : 118466. http://dx.doi.org/10.1016/j.indcrop.2024.118466.

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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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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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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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Asni, Hazima, Renita Manurung et Dian Bonella. « Aplikasi Pelarut Eutektik K2CO3-Gliserol pada Ekstraksi Pigmen Antosianin dari Kulit Manggis (Garcinia mangostana Linn.) ». Jurnal Teknik Kimia USU 9, no 2 (12 septembre 2020) : 64–69. http://dx.doi.org/10.32734/jtk.v9i2.3562.

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Mangosteen peel (Garcinia mangostana Linn.) contains 593 ppm of anthocyanin. Anthocyanin pigment from mangosteen peel (Garcinia Mangostana Linn.) can be used as an alternative to synthetic dyes. Eutectic solvents are the latest development in extraction technology to extract anthocyanin from its source. The solvent used is pottasium carbonate-glycerol based eutectic solvent. The purpose of this study was to determine the effect of eutectic solvents on the extraction of anthocyanin pigments from mangosteen peel. This research consists of 2 treatment factors namely rmolar ratio of K2CO3: glycerol of 1: 5, 1: 6, and 1: 7 and material: solvent ratio of 1: 4, 1: 6 and 1: 8. Anthocyanin content and color intensity were analyzed using a Spectrophotometer UV-Vis. Extraction using K2CO3 : glycerol eutectic solvent at a ratio of 1: 7 and the ratio of material: solvent 1: 8 produced the best treatment with extract yield of 46%; anthocyanin content of 263.976 mg/L, and color intensity value of 0.173.
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Maheshwari, R. K., Shruti Jain, Anjali Padria, Pawan Mulani, Jaydeep Singh Baghel et Neelesh Maheshwari. « ''Eco-friendly extraction using solids'' - A novel application of mixed solvency concept ». Journal of Drug Delivery and Therapeutics 9, no 2 (15 mars 2019) : 244–49. http://dx.doi.org/10.22270/jddt.v9i2.2409.

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As per the mixed solvency concept (proposed by Dr. R.K. Maheshwari), each and every substance present on the earth has got solubilizing property i.e. all the liquids, gases and solids possess solubilizing power. In the mixed solvency concept, each substance is a solubilizer. We know that all the liquids (matter in liquid state at room temperature) are known as solvents. No solvent is universal solvent. We can say that all the solvents are good solvents for some solutes and bad solvents for other solutes. Similarly, all gases and solids have good solubilizing power for some solutes and bad solubilizing power for other solutes. Organic solvents have innumerous adverse effects. Such organic solvents should be replaced by other eco-friendly alternative sources. The main objective of this research work is to provide a novel idea to the researchers that solids can also be employed for extraction of active constituents from powders of roots, leaves, seeds, fruits, bark of plants etc. In the present investigation, sesame oil has been extracted from powdered seeds of sesame using solubilizing powers of two solids, thymol and menthol using different methods. Melted thymol (temperature about 50°C), melted menthol (temperature about 45°C) were observed to have very good solubility for sesame oil. Therefore, they were used for extraction of sesame oil. Ethanol was found to be bad solvent for sesame oil. Thymol and menthol improved the solubility of sesame oil in ethanol and helped in extraction. Thymol and menthol are easily removed at about 80°C. Organic solvents are removed from extracts by suitable methods like heating, vacuum distillation etc. These solids (menthol and thymol) are also removable. Also, they can be recollected using suitable methods for recycling purposes. Keywords: Extraction, mixed solvency concept, sesame oil, menthol, thymol, eutectic liquid, solubilizer
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Jančíková, Veronika, et Michal Jablonský. « The role of deep eutectic solvents in the production of cellulose nanomaterials from biomass ». Acta Chimica Slovaca 15, no 1 (1 janvier 2022) : 61–71. http://dx.doi.org/10.2478/acs-2022-0008.

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Abstract In recent years, the demand for environment-friendly products has been on an increasing trend among researchers and industry for sustainable development. Deep eutectic solvents are green solvents which, due to their properties (biodegradability, recyclability, low cost, availability, easy preparation, low toxicity, chemical and thermal stability), can be used in various fields such as polymer chemistry, which includes nanocellulose isolation and polysaccharides processing. Several studies have illustrated the effectiveness of using deep eutectic solvents instead of the conventional reaction system to produce and disperse nanomaterials. This work summarizes the use of deep eutectic solvents in the isolation of cellulosic nanomaterials from different types of biomass. Deep eutectic solvents demonstrate high effectiveness in swelling lignocellulosic biomass and producing cellulose nanomaterials. Overall, deep eutectics solvents represent an innovative and effective pretreatment process for the fractionation of raw cellulose-containing fibres to promote subsequent isolation of nanomaterials made from cellulose.
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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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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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Thèses sur le sujet "Eutetic Solvents"

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Carvalho, villarim Pedro. « New compacts systems for biogas upgrading ». Electronic Thesis or Diss., Littoral, 2023. http://www.theses.fr/2023DUNK0697.

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Le biogaz est une source d'énergie renouvelable produite naturellement par la digestion anaérobie de matières organiques. Il se compose principalement de méthane (CH4) et de dioxyde de carbone (CO2). Il contient également des traces de vapeur d'eau, de composés organiques volatils (COV) et de sulfure d'hydrogène. La valorisation du biogaz en biométhane nécessite l'élimination des contaminants présents dans le biogaz brut, en réduisant le niveau d'impuretés afin d'obtenir une teneur élevée en CH4, de l'ordre de 90 à 99 %. Les utilisations du biométhane sont les mêmes que celles du gaz naturel, mais il s'agit d'une source d'énergie non fossile et renouvelable à 100 %. De nombreuses technologies ont été testées et appliquées pour éliminer les impuretés du biogaz, telles que le lavage à l'eau, le lavage physique et chimique, la séparation par membrane, l'adsorption par variation de pression, les méthodes biologiques, etc. Les absorbants jouent un rôle important dans l'élimination des impuretés du biogaz. Il est donc impératif de mettre au point de nouveaux absorbants dotés d'une capacité d'absorption et d'une recyclabilité élevées. L'absorbant approprié doit également avoir une faible viscosité, une toxicité relativement faible, une faible pression de vapeur, un point d'ébullition élevé, une grande capacité d'absorption et un faible coût. Les solvants eutectiques profonds (DESs) sont un mélange de deux ou trois composés chimiques (généralement un composé accepteur d'hydrogène, HBA, et un composé donneur d'hydrogène, HBD), qui se combinent par le biais de liaisons hydrogène et dont le point de fusion est inférieur à celui de chacun de leurs composants purs. Ces solvants ont des propriétés physico-chimiques qui peuvent être ajustées en fonction de la nature des composés individuels et de leur ratio. L'objectif de cette thèse était d'évaluer des DES et des solvants verts conventionnels en tant qu'absorbants pour les COV/CO2. Nous avons évalué et comparé l'efficacité de différents DESs et absorbants conventionnels pour l'absorption de neuf COV et du CO2. Le coefficient de partage vapeur-liquide (K) des COV dans les solvants étudiés et la capacité d'absorption du CO2 dans les DES ont été déterminés à l'aide de la chromatographie en phase gazeuse couplée à l’espace de tête statique. L'effet du mélange de COV, de la température et de la teneur en eau a été évalué. Les capacités d'absorption des COV individuels, de leur mélange et du CO2/CH4 dans les DES et les solvants conventionnels ont également été évaluées à l'aide d'un dispositif dynamique simulant une colonne d'absorption industrielle. Les résultats statiques et dynamiques obtenus sont en bon accord. Les capacités d'absorption d’absorbants industriels ont également été évaluées à l'échelle industrielle en utilisant un échangeur développé par notre partenaire industriel (Terrao®)
Biogas is a renewable energy source produced naturally by the anaerobic digestion of organic matter. It consists mainly of methane (CH4) and carbon dioxide (CO2). It also contains traces of water vapour, volatile organic compounds (VOCs) and hydrogen sulphide. Biogas upgrading to biomethane requires the removal of contaminants in the raw biogas, reducing the level of impurities to achieve high CH4 content of about 90 to 99%. The uses of biomethane are the same as natural gas while being a 100% renewable and non-fossil energy source. Many technologies have been tested and applied to remove impurities from biogas, such as water scrubbing, physical and chemical scrubbing, membrane separation, pressure swing adsorption, biological methods, etc. Absorbents play an important role in removing impurities from biogas. Therefore, the development of novel absorbents with high absorption capacity and high recyclability is mandatory. The suitable absorbent should also have low viscosity, relatively low toxicity, low vapor pressure, high boiling point, high absorption capacity, and low cost. Deep eutectic solvents (DESs) are a mixture of two or three chemical compounds (usually a hydrogen acceptor compound, HBA and a compound hydrogen donor, HBD), which combine via hydrogen bonds that have a lower melting point than each of their pure components. These solvents have physico-chemical properties that can be tuned depending on the nature of the individual compounds and their ratio. The purpose of the thesis was to evaluate DESs and conventional green solvents as VOCs/CO2 absorbers for biogas upgrading. We evaluated and compared the efficiency of different DESs and conventional absorbents for the absorption of nine VOCs and CO2. The vapor–liquid partition coefficient (K) of the VOCs in the studied solvents and the absorption capacity of CO2 in DES were determined using static headspace-gas chromatography. The effect of VOC mixture, temperature water content was evaluated. The absorption capacities of individuals VOCs, their mixture and CO2/CH4 in DESs and conventional solvents were also evaluated using a dynamic set-up which simulated an industrial absorption column. Both static and dynamic results are in good agreement. Also, the absorption capacities of industrial absorbents were evaluated on an industrial scale using an exchanger developed by our industrial partner (Terrao®)
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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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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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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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Obst, Martin [Verfasser], et Burkhard [Akademischer Betreuer] König. « Solvent-Free Visible-Light Photocatalysis and Synthesis in Deep-Eutectic Solvents / Martin Obst ; Betreuer : Burkhard König ». Regensburg : Universitätsbibliothek Regensburg, 2018. http://d-nb.info/1185758119/34.

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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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Marset, Xavier. « Deep Eutectic Solvents : À la Carte Solvents for Cross-Coupling Reactions ». Doctoral thesis, Universidad de Alicante, 2019. http://hdl.handle.net/10045/95790.

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En la presente memoria se describe el uso de líquidos eutécticos sostenibles (DESs en inglés) como medios de reacción, empleando diferentes catalizadores metálicos para llevar a cabo la síntesis de compuestos orgánicos de interés en química orgánica. En el Primer Capítulo se detalla el uso de un catalizador heterogéneo de cobre soportado sobre magnetita en el acoplamiento cruzado deshidrogenante de tetrahidroisoquinolinas en mezclas eutécticas. En el Segundo Capítulo se pormenoriza sobre la síntesis de un complejo tipo pinza de paladio y su empleo en la reacción de acoplamiento cruzado de Hiyama, tanto en mezclas eutécticas como en glicerol, como medios sostenibles de reacción. Asimismo, y con el fin de mejorar la compatibilidad de los catalizadores de paladio en estos líquidos eutécticos, se detalla el diseño y la síntesis de fosfinas catiónicas, las cuales han probado su efectividad como ligandos de paladio en reacciones típicas de acoplamiento cruzado (Suzuki, Heck y Sonogashira) en diferentes mezclas eutécticas. Finalmente, en el Tercer Capítulo se describen reacciones multicomponente de acoplamiento cruzado para la formación de enlaces C-S. Por un lado, se ha desarrollado una metodología para la inserción de SO2 catalizada por paladio a partir de ácidos borónicos y metabisulfito de sodio. Por otro lado, una variante de la metodología anterior permitió la síntesis de sulfonamidas sustituyendo los ácidos borónicos por compuestos de triarilbismuto y nitrocompuestos bajo catálsis de cobre. En este último caso, una nueva mezcla eutéctica ha sido descrita y caracterizada, tanto físco-química como biológicamente.
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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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Livres sur le sujet "Eutetic Solvents"

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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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Eutectic Solvents. MDPI, 2021. http://dx.doi.org/10.3390/books978-3-0365-0023-2.

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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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Verpoorte, Rob. Eutectic Solvents and Stress in Plants. Elsevier Science & Technology Books, 2021.

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Eutectic Solvents and Stress in Plants. Elsevier, 2021. http://dx.doi.org/10.1016/s0065-2296(21)x0002-x.

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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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Chapitres de livres sur le sujet "Eutetic Solvents"

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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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Naik, Papu Kumar, Nikhil Kumar, Nabendu Paul et Tamal Banerjee. « Thermodynamic Insights and Phase Equilibria Measurements on Aromatic Systems ». Dans Deep Eutectic Solvents in Liquid–Liquid Extraction, 25–64. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003231158-2.

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Naik, Papu Kumar, Nikhil Kumar, Nabendu Paul et Tamal Banerjee. « Industrial and Environmental Applications with Limitations of Deep Eutectic Solvents ». Dans Deep Eutectic Solvents in Liquid–Liquid Extraction, 147–76. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003231158-5.

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Actes de conférences sur le sujet "Eutetic Solvents"

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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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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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Mulia, Kamarza, Sylvania Putri, Elsa Krisanti et Nasruddin. « Natural deep eutectic solvents (NADES) as green solvents for carbon dioxide capture ». Dans PROCEEDINGS FROM THE 14TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND. Author(s), 2017. http://dx.doi.org/10.1063/1.4978095.

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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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Strangis, Romina, Mauro Francesco La Russa, Andrea Macchia, Giorgia Salatino, Anna Arcudi, Raffaella Mancuso et Chiara Biribicchi. « New green solvents for cleaning and conservation of Cultural Heritage : Deep Eutectic Solvents (DESs) ». Dans 2023 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage. Budapest : IMEKO, 2023. http://dx.doi.org/10.21014/tc4-arc-2023.182.

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Strangis, Romina, Mauro Francesco La Russa, Andrea Macchia, Giorgia Salatino, Anna Arcudi, Raffaella Mancuso et Chiara Biribicchi. « New green solvents for cleaning and conservation of Cultural Heritage : Deep Eutectic Solvents (DESs) ». Dans 2023 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage. Budapest : IMEKO, 2023. http://dx.doi.org/10.21014/10.21014/tc4-arc-2023.182.

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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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Sitthisak, C., G. Yusakul, W. Putalun, T. Juengwatanatrakul et T. Kanchanapoom. « Extraction of aphrodisiac chemicals from Eurycoma longifolia Jack using a natural deep eutectic solvent as a replacement for conventional solvents ». Dans GA – 69th Annual Meeting 2021, Virtual conference. Georg Thieme Verlag, 2021. http://dx.doi.org/10.1055/s-0041-1736967.

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Rapports d'organisations sur le sujet "Eutetic Solvents"

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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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