About: Evolution of Crystalline Phases during Feed-to-Glass Conversion.

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Simulated high-level waste (HLW) feed, prepared with co-precipitated Fe, Ni, Cr, and Mn hydroxides to simulate the formation of spinel, was heated up at temperature-increase rates believed to be close to those the feed experiences in the HLW glass melter. Decomposition, melting, and dissolution of the feed components (such as nitrates and silica) and the formation of intermediate crystalline phases (spinel, sodalite [Na8(AlSiO4)6(NO2)2], and Zr-containing minerals) were observed and characterized using evolved gas analysis, volume-expansion measurement, optical microscope, scanning electron microscope, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. Nitrates and quartz, the major HLW feed components, were converted to a glass-forming melt by 880 C. The conversion heat for this reaction was about 280 J/g-feed. A chromium-free spinel formed in the nitrate melt starting from 520 C and eventually dissolved in the borosilicate melt by 1050 C. Sodalite, a transient prod Simulated high-level waste (HLW) feed, prepared with co-precipitated Fe, Ni, Cr, and Mn hydroxides to simulate the formation of spinel, was heated up at temperature-increase rates believed to be close to those the feed experiences in the HLW glass melter. Decomposition, melting, and dissolution of the feed components (such as nitrates and silica) and the formation of intermediate crystalline phases (spinel, sodalite [Na8(AlSiO4)6(NO2)2], and Zr-containing minerals) were observed and characterized using evolved gas analysis, volume-expansion measurement, optical microscope, scanning electron microscope, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. Nitrates and quartz, the major HLW feed components, were converted to a glass-forming melt by 880 C. The conversion heat for this reaction was about 280 J/g-feed. A chromium-free spinel formed in the nitrate melt starting from 520 C and eventually dissolved in the borosilicate melt by 1050 C. Sodalite, a transient prod (en)
Title	Evolution of Crystalline Phases during Feed-to-Glass Conversion. Evolution of Crystalline Phases during Feed-to-Glass Conversion. (en)
skos:prefLabel	Evolution of Crystalline Phases during Feed-to-Glass Conversion. Evolution of Crystalline Phases during Feed-to-Glass Conversion. (en)
skos:notation	RIV/67985858:_____/00:27020072!RIV/2003/AV0/A27003/N
http://linked.open.../vavai/riv/strany	509;511
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z4072921)
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Izák, Pavel
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	710701
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/00:27020072
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	crystalline phases; glass conversion (en)
http://linked.open.../riv/klicoveSlovo	crystalline phases glass conversion
http://linked.open...ontrolniKodProRIV	[8E4E8D9EB9F4]
http://linked.open...v/mistoKonaniAkce	St. Louis [US]
http://linked.open...i/riv/mistoVydani	N/A
http://linked.open...i/riv/nazevZdroje	Book of Abstracts.
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2000
http://linked.open...iv/tvurceVysledku	Izák, Pavel Hrma, P. Klouzek, J.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2000-04-29 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Theoretical fundamentals of chemical processes: equilibrium and dynamic behavior of multiphase reacting systems
number of pages	7 (xsd:int)
http://purl.org/ne...btex#hasPublisher	American Ceramic Society
https://schema.org/isbn	1-57498-116-1

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