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Showing 1 to 20 of 23 for “"Mixed Solvent"”.
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Application of COSMO-SAC to Solid Solubility in Pure and Mixed Solvent Mixtures for Organic Pharmacological Compounds
… Sigma Profile Database generally focuses on solvents and small molecules, while the VT-2006 Solute Sigma Profile Database primarily consists of larger, pharmaceutical-related solutes. We design both of these databases for use with the conductor-like screening model−segment activity …
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Design of Mixed-Solvent Extraction and Size-Exclusion Simulated Moving Bed Chromatography to Recover Valuable Compounds from Electronic Waste
More than one million tons of polycarbonates and over 500,000 tons of flame retardants are consigned to landfills each year in the form of waste electrical and electronic equipment. Electronic waste is the fasting growing waste steam at a rate of 3-5% per year. Two separation processes are …
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Impact of mixed solvent on co-crystal solubility, ternary diagrams and crystallisation scale-up. Crystallisations of Isonicotinamide ¿Benzoic Acid Co-crystals from Ethanol ¿Water Co-solvent System.
… out in water, ethanol and ethanol / water mixed solvent (30 - 90 % ethanol) by utilising the Cryo-Compact circulator. Co-crystals (1:1) and (2:1) were grown in ethanol and water respectively and a mixture of both phases were grown in the mixed solvent. All the phases were examined by powder …
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Experimental Study on Improving the Waterflooding Potential in Different Heavy Oil-Solvent Systems
… mainly in heavy oil-methane systems or heavy oil-mixed solvent (methane and CO2) systems. Heavy oil-mixed solvent (methane and propane) systems, which often existed during cyclic solvent injection (CSI) processes, are rarely examined in heavy oil waterflooding processes. Therefore, it is of …
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Development of large-scale colloidal crystallisation methods for the production of photonic crystals
… A controlled evaporation method, using a mixed solvent suspension, represents the most promising method to produce high quality films over large areas, 75mm x 25mm. During this mixed solvent approach, the film is kept in the wet state longer, thus reducing cracks developing during the …
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Microstructure and phase development in yttrium barium(2) copper(3) oxygen(7) superconducting films prepared from carboxylate precursors
… salts were dissolved in propionic acid/amylamine mixed solvent system, resulting in stable solutions suitable for coatings. Thin films were deposited onto LaAlO$\sb3$ single crystal substrates by spin-coating and were fired at 740-950$\sp\circ$C under O$\sb2$, N$\sb2$, or mixed $\rm N\sb2/O\sb2$ …
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NMR study of palladium methoxide and palladium carbomethoxide complexes
… however it appears to be in equilibrium. In a mixed solvent system, such as methanol/chloroform or methylene chloride,the product appears to decompose.
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ΣΥΝΘΕΣΗ ΔΙΘΕΙΟΛΕΝΙΚΩΝ ΣΥΜΠΛΟΚΩΝ ΤΟΥ ΒΟΛΦΡΑΜΙΟΥ ΚΑΙ ΜΟΛΥΒΔΑΙΝΙΟΥ ΚΑΙ ΜΕΛΕΤΗ ΤΗΣ ΦΩΤΟΚΑΤΑΛΥΤΙΚΗΣ ΚΑΙ ΚΑΤΑΛΥΤΙΚΗΣ ΔΡΑΣΗΣ ΤΟΥ ΣΥΜΠΛΟΚΟΥ ΤΡΙΣ-11-(4-ΜΕΘΟΞΥΦΑΙΝΥΛΟ)-2-ΦΑΙΝΥΛΟ-1,2-ΑΙΘΥΛΕΝΟΔΙΘΕΙΟΛΕΝΙΚΟΥ - S,S '1 ΒΟΛΦΡΑΜΙΟΥ
… EXCESS OF THE FREE RADICAL AND THE WATER OF THE MIXED SOLVENT. THE RATE OF THE REACTION IS STUDIED AND THE MECHANISM OF THIS IS PROPOSED.
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Fabrication of aligned nanofiber yarns, mats and isolation of single nanofiber in electrospinning
… are produced from Cellulose Acetate (CA) in a mixed solvent of acetone and water. In both the techniques the nanofibers suspend over the gap in a highly oriented manner, and they can be easily transferred onto a substrate for further applications. Since the fibers generated by electrospinning …
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Investigations of the Non-Covalent Interactions of Arenes Using Phencyclone Based Molecular torsion Balances
… the 1H NMR spectra. The effects of variation of solvent on the observed free energy of interaction in each system was explore in simple and mixed solvent systems. In all cases these systems exhibited a non-classical solvophobic effect with more polar solvents facilitating the formation of …
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Functional polymers for biomedical application : synthesis and applications
… acids with a diacid chloride. A novel miscible mixed solvent single phase reaction was investigated for production of copolymers of esterified and non-esterified amino acids with diacid chlorides. Aliphatic diacid chlorides were unsuitable for condensing diamino acids using this technique …
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Templated self-assembly of siloxane block copolymers for nanofabrication
… posts made by electron-beam lithography, and solvent-annealed to induce ordering. This generates patterns with a correlation length of at least several micrometers. The annealed film was treated with plasma to obtain oxidized PDMS patterns with a lateral dimension of 14 - 18 nm. These can be …
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Diffusion of dimethyl sulfoxide in aqueous mixtures and polyelectrolyte gels
… resin (AG50W-X8) was studied as a function of solvent composition and temperature using an infinite volume-type apparatus. A combined particle-film diffusion equation was employed to obtain the intra-particle diffusion coefficients, D. The value of D decreased very rapidly with increasing mole …
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Mechanistic Studies in Tellurium Chemistry
… rate law. The percentage of water in the mixed solvent used plays a role in deciding the rate-determining step of the reaction. A mechanism for the above reactions is suggested. The reduction of p-EtOPhTeCl₃ by chromous and vanadous ions was also investigated. The stoichiometric …
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Evaluating the Potential of Scaling due to Calcium Compounds in Hydrometallurgical Processes
… minerals was conducted. A new database for the Mixed Solvent Electrolyte (MSE) model of the OLI Systems® software was developed through fitting of existing literature data such as mean activity, heat capacity and solubility data in simple binary and ternary systems. Moreover, a number of …
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Tailoring Electrolytes for Extreme Temperatures in Rechargeable Aluminum and Lithium-Ion Batteries
… Recent efforts have explored deep eutectic solvents (DES) or ionic liquid analogues (ILAs) as more environmentally friendly and affordable alternatives. However, these systems often suffer from lower ionic conductivity and narrower electrochemical windows.</p> <p>This work aims to bridge …
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Multidimensional population balance modeling and optimization of continuous reactive crystallization
… potential and is modeled by a speciation based mixed-solvent-electrolyte thermodynamic model. The effect of metal ion impurity on crystal growth rate and nucleation rate is modeled based on the crystal kinetics determined for the crystallizing system without impurity. All individual model …
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Design and Electrochemical Performance of Sodium-Based Batteries
… electrolyte consisting of 0.3 M NaPF6 in a mixed solvent was formulated and tested in SBBs. This electrolyte significantly improves the cyclability and performance of SBBs across a wide temperature range, with high-capacity retention at both elevated and sub-zero temperatures. Molecular …
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Crystallization of calcium sulphate during phosphoric acid production : improving filtration through improvement in particle shape and size distribution
… free ion concentrations. For this purpose, the mixed solvent electrolyte (MSE) model is utilized to capture the solution speciation in order to properly quantify supersaturation at any given condition. The MSE model is a first-principles model that determines solid-liquid equilibrium by …
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