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Journal articles on the topic 'Ether solvent'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Ma, Peiyuan, Priyadarshini Mirmira, and Chibueze Amanchukwu. "Co-Intercalation-Free Fluorinated Ether Electrolytes for Lithium-Ion Batteries." ECS Meeting Abstracts MA2023-01, no. 2 (2023): 550. http://dx.doi.org/10.1149/ma2023-012550mtgabs.

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Lithium-ion batteries are widely used to power portable electronics because of their high energy densities and have shown great promise in enabling the electrification of transport. However, the commercially used carbonate-based electrolytes are limited by a narrow operating temperature window and suffer against next generation lithium-ion battery chemistries such as silicon-containing anodes. The lack of non-carbonate electrolyte alternatives such as ether-based electrolytes is due to undesired solvent co-intercalation that occurs with graphitic anodes. Recently, fluorinated ether solvents ha

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2

Palanychamy, Prakas, Steven Lim, Yeow Hong Yap, and Loong Kong Leong. "Critical Review of the Various Reaction Mechanisms for Glycerol Etherification." Catalysts 12, no. 11 (2022): 1487. http://dx.doi.org/10.3390/catal12111487.

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This review provides in-depth coverage of numerous mechanisms available for the etherification process of glycerol, including alcohol solvent, olefin solvent and solvent-free routes along with products that are formed at various stages of the reaction. Mono tert-butyl glycerol ether (MTBG), di tert-butyl glycerol ether (DTBG), and tri tert-butyl glycerol ether (TTBG) are the three general ether compounds obtained through tert-butyl alcohol (TBA) etherification. Glycerol etherification with n-butanol results in the formation of glycerol ether products that are linked to the substituted butyl gr

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KOSCHEEVA, A. M., A. M. KOSCHEEV, A. V. RODIN, V. L. VIDANOV, and A. V. ANANIEV. "EXTRACTION OF CESIUM AND STRONTIUM FROM NITRIC ACID SOLUTIONS, USING CROWN-ETHERS IN HEAVY DILUENTS." Chemical Engineering 25, no. 2 (2024): 60–66. http://dx.doi.org/10.31044/1684-5811-2024-25-2-60-66.

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The extraction ability of crown-ethers has been studied with respect to cesium and strontium from nitric acid solutions in heavyweight polar organic solvents: chloroform; 1,2-dichloroethane; bis(2-chloroethyl)ether; nitrobenzene; 1,1,7-trihydrododecafluoroheptyl alcohol. Using bis(2-chloroethyl)ether as a new polar solvent in the extraction processes of dibenzo21-crown-7 and 4,4' (5')-ditretbutyldibenzo-18-crown-6, rather high distribution coefficients of cesium are achieved (DCs) from solutions with a nitric acid concentration of 1-5 mol / dm3. In the extraction of dicyclohexyl-18-crown-6 str

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Richardson, Russell K. "Determination of Fat in Dairy Products Using Pressurized Solvent Extraction." Journal of AOAC INTERNATIONAL 84, no. 5 (2001): 1522–33. http://dx.doi.org/10.1093/jaoac/84.5.1522.

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Abstract Gravimetric fat data were obtained for a wide range of dairy products with fat contents ranging from 0.5 to 83% using pressurized solvent extraction at elevated temperatures and pressure (80–120°C; 10.3 MPa). Extraction performance was sensitive to solvent composition, temperature, and sample matrix. By optimizing solvent mixtures, sample–solvent contact times of 8–10 min were sufficient for high recoveries from all products tested. The most successful solvents with regard to speed of extraction, selectivity, and recovery (average recovery, %) were various mixtures of hexane (or petro

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Gealh, Gustavo, Maynara L. A. Santos, Marcos L. Corazza, Adrián Bonilla-Petriciolet, and Fernando A. P. Voll. "Lipase-Catalyzed Synthesis of Cetyl Palmitate in the Presence of n-Hexane and Ethyl Ether." International Journal of Chemical Engineering 2024 (April 4, 2024): 1–7. http://dx.doi.org/10.1155/2024/4796291.

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Cetyl palmitate was produced by the esterification of palmitic acid with cetyl alcohol using n-hexane and ethyl ether as solvents and a commercial lipase as a catalyst. The effect of solvents to reagents mass ratio (0.5 : 1–3 : 1), percentage of n-hexane in the solvent mixture (0–100%), and reaction temperature (25–55°C) on the reaction rate were evaluated for a fixed amount of enzyme (1 wt% related to the total mass of substrates) in an equimolar mixture of palmitic acid and cetyl alcohol. Temperature and n-hexane percentage in the solvent had positive effects on the reaction rate. The total

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6

Sofiya, Karunanithi, and Sivaraman Prabhakar. "Performance of PES Membrane Contactor on the Separation of Dilute Acetic Acid from Aqueous Forms." International Journal of Membrane Science and Technology 9 (September 5, 2022): 25–32. http://dx.doi.org/10.15379/2410-1869.2022.03.

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The azeotropic characteristics of acetic acid between water make its separation from its aqueous phase essential. Many methods are studied for separating such a mixture. Solvent extraction using membrane contactors can increase the contact surface area. The dilute aqueous acetic acid extraction with the solvents petroleum ether and diisopropyl ether in a Poly Ether Sulfone (PES) hollow fiber membrane contactor was studied. The solvents and membrane extraction abilities are evaluated by exchanging the fluids on the shell and tube sides based on the distribution coefficients and total mass trans

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7

Sofiya, K., K. Anbalagan, A. Richa Elson, I. Fazal Fathima, and M. Vignesh Kumar. "Effect of solvents on the composition of Rosa x damascena concrete oil in multistage solvent extraction." Journal of Applied Horticulture 24, no. 01 (2022): 94–97. http://dx.doi.org/10.37855/jah.2022.v24i01.18.

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Four different solvents, ethyl acetate, ethanol, petroleum ether, and hexane, were used for the multistage solvent extraction of rose concrete oil from the aromatic plant species of Rosa x damascena. The components present in the concrete oils were analyzed using Gas Chromatography-Mass Spectrometer. After the multistage solvent extraction process, the solvent was removed by using a rotary vacuum evaporator. Methyl alpha d-glucopyranoside, 5-hydroxy methyl furfural, 2,3-butanediol, and ethyl-d glucopyranoside were the major components identified using ethyl acetate ethanol, hexane, and petrole

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Afandi, Asrul, Shazani Sarijan, and Ranajit Kumar Shaha. "Optimization of Rebaudioside A Extraction from Stevia Rebaudiana (Bertoni) and Quantification by High Performance Liquid Chromatography Analysis." Journal of Tropical Resources and Sustainable Science (JTRSS) 1, no. 1 (2021): 62–70. http://dx.doi.org/10.47253/jtrss.v1i1.671.

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A solid-liquid extraction and an HPLC method for determination of rebaudioside A from the leave parts of Stevia rebaudiana were developed. Separation method consisted of solvent extraction of leaf powder using various solvents like petroleum ether, methanol, diethyl ether and butanol followed by its purification using high performance liquid chromatography in order to obtain bioactive compound rebaudioside A. This solvent selection is very important prior to alternative extraction methods since it can be used as a pre-extraction solvents, main solvents, or co-solvents. The problem of hydrolysa

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9

Stephenson, W. Kirk, and Richard Fuchs. "Enthalpies of interaction of hydroxylic solutes with organic solvents." Canadian Journal of Chemistry 63, no. 9 (1985): 2535–39. http://dx.doi.org/10.1139/v85-419.

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Heats of solution of m-cresol, 1-butanol, 1-pentanol, t-amyl alcohol, and model compounds (toluene, ethyl ether, n-butyl methyl ether, t-butyl methyl ether) in 17 organic solvents (n-heptane, cyclohexane, carbon tetrachloride, 1,2-dichloroethane, α,α,α-trifluorotoluene, triethylamine, butyl ether, ethyl acetate, dimethylformamide, dimethyl sulfoxide, benzene, toluene, mesitylene, t-butyl alcohol, 1-octanol, methanol, 2,2,2-trifluoroethanol) have been combined with solute heats of vaporization to give solvation enthalpies (ΔH(v → S)). Dependencies of solute vs. model solvation enthalpy differen

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10

Bock, Hans, K. Gharagozloo-Hubmann, and M. Sievert. "Wechselwirkungen in Molekülkristallen, 160 [1,2]. Kristallzüchtung und Strukturbestimmung der verschiedenartigen Polyphenyl-Kontaktionenmultipel [p-Quaterphenylee⊖⊖][Na⊕(DME)3]2, [p-Quaterphenyl⊖⊖(Na⊕(THF)3)2] und [p-Terphenyl⊖⊖Na⊕(DME)2Na⊕(DME)]2 / Interaction in Molecular Crystals, 160 [1, 2]. Crystallization and Structure Determination of the Different Polyphenyl Contact Ion Multiples [p-Quaterphenylee⊖⊖][Na⊕(DME)3]2, [p-Quaterphenyl⊖⊖(Na⊕(THF)3)2] und [p-Terphenyl⊖⊖Na⊕(DME)2Na⊕(DME)]2." Zeitschrift für Naturforschung B 55, no. 12 (2000): 1103–13. http://dx.doi.org/10.1515/znb-2000-1201.

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The π-hydrocarbons p-terphenyl and p-quaterphenyl are reduced to their dianions in aprotic solutions of different ethers at sodium metal mirrors. Single crystal structure determinations of the solvent-separated or solvens-shared contact ion multiples, [p-terphenyl⊖⊖ Na⊕(DME)2Na⊕DME]2, p-quaterphenyl⊖⊖ ][Na⊕(DME)3]2 and [p-quaterpheny⊖⊖( Na⊕(THF)3)2], prove the essential cation solvation by the chelating dimethoxyethane (DME) versus the bulky tetrahydrofuran (THF) ligands: The solution network of equilibria between solvent separated and solvent shared ion aggregates can be considerably and tran

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11

Wazir, Norhidayah Ahmad, Wasan Saphanuchart, Anita Ramli, and Nurida Yusof. "Improved As-Synthesized Oleic Amido Propyl Betaine Surfactant Mixture for Stable Ultra-Low Interfacial Tension: Effect of Mixed Co-Solvents." Colloids and Interfaces 5, no. 1 (2021): 2. http://dx.doi.org/10.3390/colloids5010002.

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As-synthesized oleic amido propyl betaine surfactant mixture, that was produced through a “direct formulation through synthesis” process, exhibited ultra-low oil/water interfacial tension (IFT) values as low as 3.5 × 10−4 mN/m when dissolved in seawater at a reservoir temperature of 96 °C. The as-synthesized surfactant, which was left untreated, had a slightly cloudy appearance when mixed with seawater. Polar solvents were introduced to this surfactant to improve its aqueous solubility by changing its overall hydrophilicity, particularly on the oil/water interface. In this study, two types of

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12

Lee, Jia Lin, Gun Hean Chong, Masaki Ota, Haixin Guo, and Richard Lee Smith. "Solvent Replacement Strategies for Processing Pharmaceuticals and Bio-Related Compounds—A Review." Liquids 4, no. 2 (2024): 352–81. http://dx.doi.org/10.3390/liquids4020018.

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An overview of solvent replacement strategies shows that there is great progress in green chemistry for replacing hazardous di-polar aprotic solvents, such as N,N-dimethylformamide (DMF), 1-methyl-2-pyrrolidinone (NMP), and 1,4-dioxane (DI), used in processing active industrial ingredients (APIs). In synthetic chemistry, alcohols, carbonates, ethers, eucalyptol, glycols, furans, ketones, cycloalkanones, lactones, pyrrolidinone or solvent mixtures, 2-methyl tetrahydrofuran in methanol, HCl in cyclopentyl methyl ether, or trifluoroacetic acid in propylene carbonate or surfactant water (no organi

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13

Wang, Yan-zhen, Hai-long Xu, Li Gao, Meng-meng Yan, Hong-ling Duan, and Chun-min Song. "Regeneration of Spent Lubricant Refining Clays by Solvent Extraction." International Journal of Chemical Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/207095.

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Step-by-step solvent extraction was used to regenerate spent clay by recovering the adsorbed oil in lubricating oil refining clay. Several polar and nonpolar solvents were tested, and petroleum ether (90–120°C) and ethanol (95 v%) were selected as the nonpolar and polar solvents, respectively. The spent clay was first extracted using petroleum ether (90–120°C) to obtain ideal oil and then extracted with a mixed solvent of petroleum ether (90–120°C) and ethanol (95 v%) two or three times to obtain nonideal oil before being extracted with ethanol and water. Finally, the clay was dried at 130°C t

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14

Busfield, W. Ken, W. Ken Busfield, Ian D. Jenkins, Ian D. Jenkins, Michael J. Monteiro, and Michael J. Monteiro. "Initiation Processes in Copolymerization Studied by the Nitroxide Radical-Trapping Technique: Ethyl Vinyl Ether and Acrylonitrile." Australian Journal of Chemistry 50, no. 1 (1997): 1. http://dx.doi.org/10.1071/c96016.

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The nitroxide free-radical trapping technique has been applied to an investigation of the initiation mechanism of the copolymerization of ethyl vinyl ether and acrylonitrile initiated by t-butoxyl radicals. In addition to a range of products normally produced from reactions with individual monomers, four new trapped products each involving both monomers have been observed. These arise because the strongly electron-accepting acrylonitrile reacts so fast with the strongly nucleophilic ethyl vinyl ether radical end groups that the reaction competes successfully with radical trapping. t-Butoxyl ra

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15

Stephenson, W. Kirk, and Richard Fuchs. "Enthalpies of interaction of aromatic solutes with organic solvents." Canadian Journal of Chemistry 63, no. 9 (1985): 2529–34. http://dx.doi.org/10.1139/v85-418.

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Heats of solution of several aromatic solutes (benzene, toluene, mesitylene, nitrobenzene, α,α,α-trifluorotoluene, anisole) and model compounds (n-butyl methyl ether, cyclohexane) in 17 organic solvents (n-heptane, cyclohexane, carbon tetrachloride, 1,2-dichloroethane, α,α,α-trifluorotoluene, triethylamine, butyl ether, ethyl acetate, dimethylformamide, dimethyl sulfoxide, benzene, toluene, mesitylene, t-butyl alcohol, 1-octanol, methanol, 2,2,2-trifluoroethanol) have been combined with solute heats of vaporization to give enthalpies of transfer from vapor to solvent (ΔH(v → S)). Differences b

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16

Xia, Dawei, Lei Tao, and Feng Lin. "Lithium, Ether, and Graphite: A Retrospective Trilogy of the Anode-Electrolyte Interface." ECS Meeting Abstracts MA2024-02, no. 2 (2024): 288. https://doi.org/10.1149/ma2024-022288mtgabs.

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Ethers represent a family of solvents widely applied in various battery chemistries, except in the most successful battery—Li-ion batteries (LIBs). It is believed that ether electrolytes are incompatible with graphite anodes in LIBs due to detrimental solvent co-intercalation and exfoliation. Here, we demonstrate that ether electrolytes at standard salt concentration can enable outstanding reversibility and fast-charge capability of graphite anodes in LIBs. In short, for ether electrolytes, the anion and the solid-electrolyte interphase (SEI) govern the electrochemical behaviors of graphite an

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17

Xu, Jiarui, Zhiyi Zhang, Xiaodong Xiong, and Hanmin Zeng. "A new solvent for poly(ether ether ketone)." Polymer 33, no. 20 (1992): 4432–34. http://dx.doi.org/10.1016/0032-3861(92)90293-6.

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18

Meng, Hongyu, Xin Zhang, Qiuchi Chen, et al. "Preparation of poly(aspartic acid) superabsorbent hydrogels by solvent-free processes." Journal of Polymer Engineering 35, no. 7 (2015): 647–55. http://dx.doi.org/10.1515/polyeng-2014-0275.

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Abstract Poly(aspartic acid) (PASP) hydrogel is a biodegradable and biocompatible polymer with high water absorbing ability. Traditionally, the production of PASP hydrogel consumes large amounts of organic solvents, i.e., dimethylformamide (DMF) or dimethyl sulfoxide (DMSO). This traditional approach is now considered costly, complex and environmentally unfriendly due to required used solvent disposal. The present research explores two novel methods in preparing PASP hydrogel without organic solvent, by using hydrazine hydrate and ethylene glycol diglycidyl ether (EGDGE) or poly(ethylene glyco

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Browne, M. M., M. Forsyth, and A. A. Goodwin. "Solvent diffusion in poly(ether ether ketone)/poly(ether imide) blends." Polymer 36, no. 22 (1995): 4359–60. http://dx.doi.org/10.1016/0032-3861(95)92236-8.

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20

Ramrao Gawali, Sonali, and Jitendra Y. Nehete. "Antibacterial and Antifungal Activities from Leaf and Stem Extracts of Clematis hedysarifolia DC. : An Ethnomedicinal Plant." Journal of Plant Science Research 38, no. 2 (2023): 609–14. http://dx.doi.org/10.32381/jpsr.2022.38.02.16.

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The pet ether, ethyl acetate, n-butanol and ethanol extracts of leaves and stems of plant Clematis hedysarifolia DC was assessed for their antimicrobial properties against Gram positive (Staphylococcus aureus), Gram negative (Escherichia coli and Pseudomonas aeruginosa) bacteria and fungi (Candida sp.). Among all the extract only pet ether extract of leaves showing antimicrobial activity against Gram positive (Staphylococcus aureus) bacteria. Further the stem extracts of ethyl acetate, n-butanol and ethanol solvents only showed considerable antifungal activity. However, the petroleum ether ext

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Yermolenko I. P., Mikhailova V. A., and Ivanov A. I. "Determination of the relaxation characteristics for solvents from non-stationary spectra: the role of the gating pulse duration." Optics and Spectroscopy 130, no. 10 (2022): 1242. http://dx.doi.org/10.21883/eos.2022.10.54860.3924-22.

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The previously developed approach to the analysis of experimental spectra of non-stationary fluorescence has been improved by taking into account the effect of the duration of the gating pulse and a more accurate description of the initial stage of solvent relaxation. The exponential function used to describe the inertial component of relaxation has been replaced by the Gaussian function. This approach explicitly takes into account the reorganization and relaxation of the solvent and intramolecular vibrations. It includes an explicit description of the wave packet formation in the excited stat

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22

Tyagi, Durvesh K., and Nikhil Kumar. "Physico-chemical investigation of variously extracted medicinally useful materials from the rhizomes of Alpinia calcarata Rosc. of Kumaun Region, India." Environment Conservation Journal 14, no. 1&2 (2013): 127–29. http://dx.doi.org/10.36953/ecj.2013.141222.

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Extractions of medicinally useful materials from the rhizome of Alpinia calcarata Rosc. separately through solvents of decreasing polarities, viz., water, ethanol, diethyl ether and petroleum ether are also carried out. In the rhizome of A. calcarata the water extract has maximum yield.Odours vary in differently extracted materials. Diethyl ether and petroleum ether extracted materials show a sufficientdegree of unsaturation. All of the solvent extracted materials are dextro rotatory. Specific gravities, refractive indices, acid, saponification and iodine values of these variously extracted ma

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23

Hadisaputra, Saprizal, Harno Dwi Pranowo, and Ria Armunanto. "EXTRACTION OF STRONTIUM(II) BY CROWN ETHER: INSIGHTS FROM DENSITY FUNCTIONAL CALCULATION." Indonesian Journal of Chemistry 12, no. 3 (2012): 207–16. http://dx.doi.org/10.22146/ijc.21332.

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The structures, energetic and thermodynamic parameters of crown ethers with different cavity size, electron donating/withdrawing substituent groups and donor atoms have been determined with density functional method at B3LYP level of theory in gas and solvent phase. Small core quasi-relativistic effective core potentials was used together with the accompanying SDD basis set for Sr2+ and DZP basis set was used for crown ether atoms. Natural bond orbital (NBO) analysis was evaluated to characterize the distribution of electrons on the complexes. The interaction energy is well correlated with the

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Sofiya, K., and G. Bharath Kumar. "Study on the Effect of Dual Solvent Proportions on Composition of Rosa x damascena Concrete Oil Obtained using Soxhlet Extraction Method." Asian Journal of Chemistry 34, no. 1 (2021): 78–84. http://dx.doi.org/10.14233/ajchem.2022.23451.

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Concrete oil was extracted from Rosa x damascena using different percentage ratios of solvents (petroleum ether and ethanol) by the Soxhlet extraction method. The extraction was carried out using petroleum ether and ethanol in five different percentage ratios of (v/v) (100:0, 75:25, 50:50, 25:75, 0:100) (petroleum ether:ethanol). The rotary vacuum evaporator was used to separate concrete oil and the solvents. The extracted concrete oil was analyzed using gas chromatography-mass spectrometry (GC-MS) technique. The obtained results show that many new compounds were identified, at two different s

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Dobush, Gloria R., C. Davison Ankney, and David G. Krementz. "The effect of apparatus, extraction time, and solvent type on lipid extractions of snow geese." Canadian Journal of Zoology 63, no. 8 (1985): 1917–20. http://dx.doi.org/10.1139/z85-285.

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Variability in apparatus, solvent type, and extraction time for lipid extractions is common in the literature. To investigate the effect of this methodological variability on the amount and type of material extracted, equal subsamples of snow goose (Chen caerulescens) homogenate were extracted in Soxhlet and Goldfisch fat extractors with petroleum ether, diethyl ether, chloroform–methanol, and a petroleum ether–chloroform–methanol mixture for 3, 6, 12, and 24 h. The type of solvent used had the largest effect on the amount of material that was extracted. Petroleum ether and diethyl ether extra

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Ebe, Tochukwu E., Ifeyinwa Mgbemena, Roselyn F. Njoku-Tony, Chinedu Ihejirika, and Emmanuel E. Onuoha. "Larvicidal effect of Cymbopogon citratus root and leaf on the first instar larval stage of Anopheles gambiae, Culex quinquefasciatus and Aedes eagypti." Journal of Environmental Toxicology and Public Health 1 (November 4, 2015): 41–43. https://doi.org/10.5281/zenodo.218348.

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Larvicidal effect of lemongrass root and leaf was carried out with three different species of mosquito (<em>Anopheles gambiae, Culex quinquefasciatus</em> and <em>Aedes eagypti</em>) at the first instar stage of development. Soxhlet apparatus was used to extract the pulverized plant parts using petroleum ether and aqueous extraction solvents and the different extracts were used for the analysis. The result showed that the mean death of <em>Anopheles gambiae</em> recorded highest (13.995); this is followed by <em>Aedes eagypti</em> (12.641) and <em>Culex quinquefasciatus</em> (11.426). Also lem

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Ujjwal Kumar Mondol and W. Islam. "Bioseparation of phytochemical constituents from leaf and stem extracts of Mimosa pudica L." International Journal of Biological and Pharmaceutical Sciences Archive 6, no. 1 (2023): 023–32. http://dx.doi.org/10.53771/ijbpsa.2023.6.1.0075.

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The isolation procedure of chemical constituents was mainly based on fractionation by solvents of varying polarity. After cold extraction, solvent-solvent partitioning of extract was done with different solvents to yield different extracts of leaf and stem of Mimosa pudica L. Gas Chromatography-Mass Spectrometry (GC-MS) analysis was carried out for petroleum ether, chloroform and ethyl acetate extracts of leaf as well as chloroform and ethyl acetate extracts of stem and 16, 11, 3, 26 and 3 compounds were identified respectively. The major compounds were benzene,1-ethyl-3-methyl- (14.83%) for p

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Khazaei, Ardeshir, Amin Rostami, Ayeh Raiatzadeh, and Marjan Mahboubifar. "N-Bromosuccinimide (NBS) — Selective and effective catalyst for trimethylsilylation of alcohols and phenols using hexamethyldisilazane and their regeneration under mild and neutral reaction conditions." Canadian Journal of Chemistry 85, no. 5 (2007): 336–40. http://dx.doi.org/10.1139/v07-029.

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Structurally diverse alcohols and phenols were trimethylsilylated in a clean and efficient reaction with hexamethyldisilazane (HMDS) based on the use of a catalytic amount of N-bromosuccinimide under both dichloromethane and solvent-free conditions at room temperature. Deprotection of trimethylsilyl ethers was also be achieved efficiently in the presence of a catalytic amount of NBS in methanol at ambient temperature.Key words: N-bromosuccinimide, solvent-free, alcohols, phenols, hexamethyldisilazane, trimethylsilyl ether, catalyst, detrimethylsilylation.

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Kovalenko, G. A., and L. V. Perminova. "Heterogeneous Biocatalytic Processes of the Low-Temperature Synthesis of Esters: Selection of Organic Solvent." Kataliz v promyshlennosti 20, no. 4 (2020): 313–22. http://dx.doi.org/10.18412/1816-0387-2020-4-313-322.

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Processes of the low-temperature enzymatic synthesis of esters in nonaqueous media of organic solvents with participation of heterogeneous biocatalysts synthesized by the adsorption immobilization of a recombinant lipase from Thermomyces lanuginosus (Pichia pastoris producer) on macroporous carbon aerogel were investigated. The esterification reaction was conducted using individual organic solvents of different polarity, such as nonpolar ones (lоgP > 2.5) – hexadecane, hexane and toluene, and polar solvents (lоgP < 1) – diethyl ether, tert-butanol and acetone, as well as their binary mix

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Keat Long, Low, Iqbal Ahmed, and Ani Idris. "Effects of Organic Solvent and Temperature on the Extraction of Lutein from Scenedesmus sp Biomass." Jurnal Kejuruteraan si2, no. 1 (2019): 125–30. http://dx.doi.org/10.17576/jkukm-2019-si2(1)-15.

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Lutein is a valuable bioactive compound that has various industrial applications. In nature, lutein is a yellow coloured isoprenoid polyene pigment, being produced by many photosynthetic organisms. With regard to Scenedesmus sp as the studied organism, this study aims to investigate the efficiency of microalgae-derived lutein extraction process. Repetitive solvent extraction method had been examined with four different organic solvents under different treatment temperatures for their lutein extraction effectiveness. Results showed that diethyl ether was the most effective organic solvent to ex

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Evbuomwan, B.O., D.T. Dick, and A.C. Chioma. "Comparative Analysis of Effect of Alternative Solvents on Extraction of Moringa oleifera Seed Oil." Chemistry Research Journal 2, no. 5 (2017): 44–50. https://doi.org/10.5281/zenodo.13950588.

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This paper study Comparative analysis of <em>Moringa oleifera</em> seed oil using alternative solvents (Petroleum ether and Acetone). The influence of different conditions and physicochemical parameters using petroleum ether and acetone were analysed statistically. The results of the physicochemical properties for petroleum ether and acetone are as follows; Peroxide value: (1.16 mEq/kg and 0.84 mEq/kg), free fatty Acid value: (1.14 mgKOH/g and 1.08 mgKOH/g), Saponification value: (200.67 mgKOH/g oil and 253.32 mgKOH/g oil), Iodine value: (86.03 mgiodine/100g and 85.35 mgiodine/100g), Specific

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da Silva Burgal, João, Ludmila G. Peeva, Santosh Kumbharkar, and Andrew Livingston. "Organic solvent resistant poly(ether-ether-ketone) nanofiltration membranes." Journal of Membrane Science 479 (April 2015): 105–16. http://dx.doi.org/10.1016/j.memsci.2014.12.035.

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Mensitieri, G., M. A. Del Nobile, A. Apicella, L. Nicolais, and F. Garbassi. "Solvent induced crystallization in poly(aryl-ether-ether-ketone)." Journal of Materials Science 25, no. 6 (1990): 2963–70. http://dx.doi.org/10.1007/bf00584912.

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K.S., Vinayaka, Raghavendra L.S. Hallur, and Prashith Kekuda. "Preliminary phytochemical analysis and in vitro antioxidant activity of Glochidion ellipticum Wight (Phyllanthaceae)." Biomedicine 42, no. 1 (2022): 148–53. http://dx.doi.org/10.51248/.v42i1.654.

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Introduction and Aim: Reactive oxygen species are implicated in the pathophysiology of several human ailments. Antioxidants from plants are shown to be promising in terms of their health benefits. Glochidion ellipticum Wight is belonging to the family Phyllanthaceae. This study investigated the antioxidant potential of solvent extracts of G. ellipticum leaves in vitro. Materials and Methods: Sequential extraction of the shade dried leaf powder was carried out by maceration using petroleum ether, chloroform and methanol solvents. The solvent extracts were subjected to preliminary phytochemical

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Zhang, Huang, Thomas Diemant, Bingsheng Qin, Huihua Li, R. Jürgen Behm, and Stefano Passerini. "Solvent-Dictated Sodium Sulfur Redox Reactions: Investigation of Carbonate and Ether Electrolytes." Energies 13, no. 4 (2020): 836. http://dx.doi.org/10.3390/en13040836.

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Sulfur-based cathode chemistries are essential for the development of high energy density alkali-ion batteries. Here, we elucidate the redox kinetics of sulfur confined on carbon nanotubes, comparing its performance in ether-based and carbonate-based electrolytes at room temperature. The solvent is found to play a key role for the electrochemical reactivity of the sulfur cathode in sodium–sulfur (Na–S) batteries. Ether-based electrolytes contribute to a more complete reduction of sulfur and enable a higher electrochemical reversibility. On the other hand, an irreversible solution-phase reactio

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Ермоленко, И. П., В. А. Михайлова та А. И. Иванов. "Определение релаксационных характеристик растворителей по нестационарным спектрам флуоресценции: роль длительности стробирующего импульса". Оптика и спектроскопия 130, № 10 (2022): 1499. http://dx.doi.org/10.21883/os.2022.10.53619.3924-22.

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The previously developed approach to the analysis of experimental spectra of nonstationary fluorescence has been improved by taking into account the effect of the duration of the gating pulse and a more accurate description of the initial stage of solvent relaxation. The exponential function used to describe the inertial component of relaxation has been replaced by the Gaussian function. This approach explicitly takes into account the reorganization and relaxation of the solvent and intramolecular vibrations. It includes an explicit description of the wave packet formation in the excited state

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Mandal, Sangita, Swagata Mandal, Sumanta K. Ghosh, et al. "A review on the advancement of ether synthesis from organic solvent to water." RSC Advances 6, no. 73 (2016): 69605–14. http://dx.doi.org/10.1039/c6ra12914e.

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Ethers have been synthesized by different protocols, this review aims to bring the attention of scientists working in the field of industrial chemistry, green chemistry, and catalysis towards the potential future of ether synthesis in micellar media.

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38

Al Musaimi, Othman, Ayman El-Faham, Zainab Almarhoon, Alessandra Basso, Beatriz G. de la Torre, and Fernando Albericio. "Bypassing Osmotic Shock Dilemma in a Polystyrene Resin Using the Green Solvent Cyclopentyl methyl Ether (CPME): A Morphological Perspective." Polymers 11, no. 5 (2019): 874. http://dx.doi.org/10.3390/polym11050874.

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The “osmotic shock” phenomenon is the main thing that is responsible for morphological structure alteration, which can jeopardize the use of a polymer in a chemical process. This is extremely important in solid-phase peptide synthesis (SPPS), which is the method of choice for the preparation of these important biologically active compounds. Herein, we have used Hildebrand solubility parameters (δ) to investigate the influence of different ethers that are used in the precipitation step of the SPPS using a polystyrene resin. The green cyclopentyl methyl ether (CPME) has shown to be slightly supe

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Stemmer, David, and Odi Kehagias. "Bone Degreasing – Finding a New Solution to an Old Problem." Biodiversity Information Science and Standards 2 (June 13, 2018): e26392. http://dx.doi.org/10.3897/biss.2.26392.

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The South Australian Museum boasts the largest and most comprehensive cetacean collection in Australia, including various large cetacean skeletons. The preparation of these skeletons was done at various locations throughout the history of the Museum until the state government funded a purpose-built preparation facility which opened in 1983. The well-equipped centre was fitted with a large (2800 L) custom-built liquid-vapour degreaser that used trichloroethylene (TCE) as solvent. Many beautifully degreased skeletons, including a 22 m pygmy blue whale, were prepared during its 15-year operation.

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Stemmer, David, and Odi Kehagias. "Bone Degreasing – Finding a New Solution to an Old Problem." Biodiversity Information Science and Standards 2 (June 13, 2018): e26392. https://doi.org/10.3897/biss.2.26392.

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The South Australian Museum boasts the largest and most comprehensive cetacean collection in Australia, including various large cetacean skeletons. The preparation of these skeletons was done at various locations throughout the history of the Museum until the state government funded a purpose-built preparation facility which opened in 1983. The well-equipped centre was fitted with a large (2800 L) custom-built liquid-vapour degreaser that used trichloroethylene (TCE) as solvent. Many beautifully degreased skeletons, including a 22 m pygmy blue whale, were prepared during its 15-year operation.

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Sharghi, Hashem, and Reza Khalifeh. "Reaction on a solid surface — A simple, economical, and efficient Mannich reaction of azacrown ethers over graphite." Canadian Journal of Chemistry 86, no. 5 (2008): 426–34. http://dx.doi.org/10.1139/v08-026.

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Graphite brings about a rapid Mannich reaction with a range of activated and unactivated phenolic compounds such as p-cresol and p-nitrophenol. The reactions are carried out with azacrown ether and paraformaldehyde in solvent-free conditions at 100 °C for 20–30 min. The graphite powder can be reused up to three times after simple washing with acetone.Key words: azacrown ether, lariat ether, graphite, solvent-free, Mannich reaction.

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Zhou, Jian Shi, Xian Yong Wei, You Quan Dou, et al. "Solvent Cutting to Make Superior Coal Tar Pitches." Advanced Materials Research 239-242 (May 2011): 1296–99. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1296.

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Using solvents extraction separation system of self-designed make superior coal tar pitches for carbon materials. In proper order choose petroleum ether, methanol and carbon disulfide to cut coal tar into several fractions under different condition. The first solvent can take light components out from coal tar. Then drag out those chemical that contain heteroatom such as nitrogen, sulfide applying the second solvent. The last is to dig out higher molecular weight polycyclic aromatic hydrocarbon from coal tar deeply. Heavy fractions are vacuumed to drive out any solvents. The superior chirpy co

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Sajid, Sajid, Salem Alzahmi, Nouar Tabet, Yousef Haik, and Ihab M. Obaidat. "Fabricating Planar Perovskite Solar Cells through a Greener Approach." Nanomaterials 14, no. 7 (2024): 594. http://dx.doi.org/10.3390/nano14070594.

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High-quality perovskite thin films are typically produced via solvent engineering, which results in efficient perovskite solar cells (PSCs). Nevertheless, the use of hazardous solvents like precursor solvents (N-Methyl-2-pyrrolidone (NMP), dimethyl sulfoxide (DMSO), dimethylformamide (DMF), gamma-butyrolactone (GBL)) and antisolvents (chlorobenzene (CB), dibutyl ether (DEE), diethyl ether (Et2O), etc.) is crucial to the preparation of perovskite solutions and the control of perovskite thin film crystallization. The consumption of hazardous solvents poses an imminent threat to both the health o

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Thanh, Nguyen D., Do S. Hai, Vu T. N. Bich, et al. "Using Sodium Hydride and Potassium Carbonate as Bases in Synthesis of Substituted 2-Amino-4-aryl-7-propargyloxy-4H-chromene-3-carbonitriles." Current Organic Synthesis 16, no. 3 (2019): 423–30. http://dx.doi.org/10.2174/1570179416666190104124652.

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Aims and Objective: 1-Alkynes are the important precursors for the CuAAC click chemistry. The hybrid of 1,2,3-triazole ring to the chromene ring and sugar moiety could bring some remarkable biological properties. Propargyl derivatives are usually used in the click chemistry. This article reported the synthesis of 2-amino-4-aryl-7-propargyloxy-4-aryl-4H-chromene-3-carbonitriles using propargyl bromide as alkylation agent and the use of potassium carbonate and sodium hydride as bases in the conversion of 2-amino-4-aryl-7- hydroxy-4-aryl-4H-chromene-3-carbonitriles into corresponding propargyl et

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Alteerah, Munay A., Amnnah Kh Loujanqi Loujanqi, and Masoud M. Godeh. "Evaluation of Cladophora vadorum antimicrobial activity collected from Tabalino lakes in Benghazi city, Libya on human pathogenic bacterial isolates." Libyan Journal of Science &Technology 12, no. 1 (2024): 137–39. https://doi.org/10.37376/ljst.v12i1.7118.

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This study was conducted using Cladophora vadorum (green algae), collected from Tabalino lakes in Benghazi to evaluate the effect of this algae on the growth of four strains of bacteria (Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumonia) using 5 types of organic solvents (ethanol, acetone, methanol, petroleum ether, and ethyl acetate). The effect of organic solvent extracts on the growth of the bacteria used was varied. The petroleum ether extract was the most effective against the growth of all the bacteria used. Ethanol, Acetone, and ethyl acetate were

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Gui, Ting, Yun Zhao, Qing Ze Jiao, Han Sheng Li, and Qin Wu. "Preparation of Heat-Resistant Enameled Wire Coating of Fluorinated Poly (Ether Ether Ketone) and Properties." Advanced Materials Research 1035 (October 2014): 432–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1035.432.

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The soluble poly (ether ether ketone) (PEEK) containing trifluoromethyl group (FPEEK) was prepared by nucleophilic polycondensation reaction of 4, 4'-difluorobenzophenone and 4, 4′-(hexafluoroisopropylidene) diphenol in the presence of an excess of anhydrous K2CO3 with tetramethylene sulfone as the solvent. The structure and thermal stability of FPEEK were studied by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, X-ray diffractometer and thermogravimetric analyzer. The solubility of FPEEK was also investigated using different organic solvents. Then the soluti

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Sheng, Kai, Ryosuke Okuno, and Mingyuan Wang. "Dimethyl Ether as an Additive to Steam for Improved Steam-Assisted Gravity Drainage." SPE Journal 23, no. 04 (2018): 1201–22. http://dx.doi.org/10.2118/184983-pa.

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Summary Coinjection of solvent with steam results in lower chamber-edge temperatures than those in steam-assisted gravity drainage (SAGD), which enables the decrease of heat losses to the overlying formation rocks. However, use of highly volatile solvents, such as propane, can yield significantly slow bitumen production because of low chamber-edge temperatures. The suitability of alkane solvents for SAGD in terms of phase behavior has been reported to increase with increasing carbon number and tends to level off at a certain carbon number, which is approximately C6 for Athabasca bitumen reserv

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Abdulhamid, Mahmoud A., Sang-Hee Park, Hakkim Vovusha, et al. "Molecular engineering of high-performance nanofiltration membranes from intrinsically microporous poly(ether-ether-ketone)." Journal of Materials Chemistry A 8, no. 46 (2020): 24445–54. http://dx.doi.org/10.1039/d0ta08194a.

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49

Wolf, Clarence J., John A. Bornmann, Michael A. Grayson, and David P. Anderson. "Solvent-induced crystallinity in poly(aryl-ether-ether-ketone) [PEEK]." Journal of Polymer Science Part B: Polymer Physics 30, no. 3 (1992): 251–57. http://dx.doi.org/10.1002/polb.1992.090300304.

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50

Kalika, D. S., J. C. Nickell, R. K. Krishnaswamy, and B. F. Barton. "Dynamic relaxation behavior of solvent-crystallized poly(ether ether ketone)." Journal of Polymer Science Part B: Polymer Physics 32, no. 4 (1994): 759–70. http://dx.doi.org/10.1002/polb.1994.090320417.

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