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Showing 1 to 15 of 15 for “"metaphosphate"”.
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Studies of metaphosphate acids and metaphosphate anhydrides in aprotic media
The chemistry of metaphosphate acids has historically been studied in aqueous media, where acid-catalyzed hydrolysis and solvent leveling effects of these strong acids have prevented their observations and rigorous characterization. Solubilization of tri-, tetra-, and hexametaphosphates in aprotic …
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Metal metaphosphate complexes for redox flow batteries
… A series of first row transition metal trimetaphosphate complexes as bis(triphenylphosphine)iminium (PPN) salts have been prepared. Their electrochemical properties have been studied to evaluate them for redox flow battery applications. [PPN]₃[Fe(P₃Og)₂] and [PPN]₂[VO(P₃O₉)(acac)] were …
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Electrochemistry of Metaphosphate in Molten Lithium-Chloride - Potassium-Chloride Eutectic
Made available in DSpace on 2014-12-09T17:35:34Z (GMT). No. of bitstreams: 1 6612372.pdf: 3234101 bytes, checksum: 4f2c62dd3e3779c9a81dcaedcccae6a4 (MD5) Previous issue date: 1966
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Molecular dynamics simulation : an investigation into the short range structure of metaphosphate glasses
… into the local environment of three metaphosphate glasses using molecular dynamics simulations is presented. The short rage structure of the phosphate and metal networks were determined from pair, cumulative and bond angle distribution functions as well as identifying the types of …
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Development and characterisation of calcium phosphate glasses and glass-ceramics containing fluorine and titanium
… crystal phases corresponding to calcium metaphosphate, calcium pyrophosphate and titanium pyrophosphate were present. No phase however corresponding to fluorine was found. FTIR results of type A and type B glasses showed peaks corresponding to metaphosphate, pyrophosphate and …
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Structural role of nitrogen in phosphorus oxynitride glasses
… of oxynitride glass made by melting sodium metaphosphate in anhydrous ammonia gas. Changes in the dissolution rate in water, thermal expansion coefficient, dilatometric softening point and glass transition temperatures, refractive index, microhardness, and electrical conductivity are …
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Phosphate and Borophosphate Glasses for optical and Biomedical Applications
… decreases the dissolution rates of both Na-Ca/Sr-metaphosphate glasses as well as the borophosphate glasses, which are of interest for the use in biomedical applications. Finally, the systematic substitution of P<sub>2</sub>O<sub>5</sub> for B<sub>2</sub>O<sub>3</sub> in a series of …
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Processing parameters and kinetics of phosphate-based dechlorination for electrorefiner salt waste
… H2O(g) with concurrent formation of an alkali metaphosphate glass. Dechlorination in air environments was achieved at temperatures as low as 300°C in air, but full dechlorination was achieved in both air and argon between 500-600°C.This work aimed to reduce the thermal demands of the …
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Electrochemistry of systems containing aluminum phosphate dissolved in fused borate and phosphate mixtures
… as well as in the eutectic mixture of sodium metaphosphate and sodium pyrophosphate. ln none of the investigations was an electrodeposit of aluminum obtained. Investigation of the borates-phosphate mixtures comprised determination of a "fluid range"-composition diagram of the sodium …
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Synthesis and reactivity of some β-substituted alkylphosphonates
… to produce trimethylamine, ethylene and metaphosphate was investigated. The results obtained were to give an indication of the susceptibility of (C₆H₃Cl₂)OCH₂CH₂N⁺R₂CH₂CH₂P(OR')O₂⁻ to analogous fragmentation to release 2-(3,4- dichlorophenoxy)ethyldialkylamine and ethylene, both well …
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Solid state superionic stamping design for large area patterning
… quality stamp surfaces. The silver iodide silver metaphosphate glass system was singled out as most promising for S4 stamps. This material was synthesized, characterized, and developed into a rudimentary S4 stamp, where it demonstrated a significant improvement over the previously reported …
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The electrophilicity and chemistry of phosphate esters
… a phenonium ion intermediate and expulsion of a metaphosphate species.
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Solid-state superionic conductors for advanced nanoscale fabrication
… the solid electrolyte glass silver iodide-silver metaphosphate (AgIAgPO3) as a pathway for nanoscale patterning of silver using simple processing. AgIAgPO3 was chosen as an ideal candidate solid ionic conductor because it is optically transparent, has a high ionic conductivity for silver at room …
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Mechanisms of polyphosphate degradation
The goal of my research has been to investigate the mechanisms by which inorganic polyphosphate (polyP) is degraded in vivo. PolyP is a linear chain of phosphate moieties linked through high-energy phosphoanhydride bonds and can range in size from three-phosphates-long to thousands. Naturally, …