About: Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Thermodynamics and chemical equilibrium for reduction of nickel/cobalt oxide by hydrogen, carbon monoxide, model syngas and methane and for oxidation of metallic Ni and Co by steam has been studied in a temperature range 400 – 900 K. Attention was concentrated also on possible formation of undesired soot, relevant carbides and carbonates. Oxidation of Ni and Co by steam is thermodynamically the more difficult step at temperatures 400 – 900 K . NiO and/or CoO reduction is feasible. Ni and Co-ferrite could be a convenient compound for cyclic redox process of hydrogen production if stability of the ferrites is sufficient. Thermodynamics and chemical equilibrium for reduction of nickel/cobalt oxide by hydrogen, carbon monoxide, model syngas and methane and for oxidation of metallic Ni and Co by steam has been studied in a temperature range 400 – 900 K. Attention was concentrated also on possible formation of undesired soot, relevant carbides and carbonates. Oxidation of Ni and Co by steam is thermodynamically the more difficult step at temperatures 400 – 900 K . NiO and/or CoO reduction is feasible. Ni and Co-ferrite could be a convenient compound for cyclic redox process of hydrogen production if stability of the ferrites is sufficient. (en) V rozmezí teplot 400 – 900 K byly studovány termodynamické možnosti a chemické rovnováhy jednak pro redukci NiO a CoO vodíkem, oxidem uhelnatým a metanem a jednak pro oxidace Ni a Co vodní parou. Pozornost byla soustředěna také na možnou tvorbu nežádoucích produktů jako sazí, příslušných karbidů a uhličitanů. Oxidace Ni a Co vodní parou je termodynamicky obtížnšjší krok za teplot 400 – 900 K. Redukce NiO a CoO je snadnější krok. Pokud by stabilita Ni a/nebo Co-feritu byla dostačující, bylo by možné využít k cyklickému redox procesu výroby vodíku těchto feritů. (cs)
Title	Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures Termodynamické možnosti a omezení pro výrobu čistého vodíku pomocí nízko-teplotního oxidačně-redukčního cyklického procesu založeného na niklu a/nebo kobaltu (cs) Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures (en)
skos:prefLabel	Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures Termodynamické možnosti a omezení pro výrobu čistého vodíku pomocí nízko-teplotního oxidačně-redukčního cyklického procesu založeného na niklu a/nebo kobaltu (cs) Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures (en)
skos:notation	RIV/67985858:_____/08:00307516!RIV08-AV0-67985858
http://linked.open.../vavai/riv/strany	221;231
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z40720504)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Pohořelý, Michael Svoboda, Karel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	399926
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/08:00307516
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hydrogen; nickel; cobalt (en)
http://linked.open.../riv/klicoveSlovo	cobalt hydrogen nickel
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[657ECFB46771]
http://linked.open...i/riv/nazevZdroje	Energy Conversion and Management
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	49
http://linked.open...iv/tvurceVysledku	Pohořelý, Michael Svoboda, Karel Rogut, J. Baxter, D. Siewiorek, A.
http://linked.open...n/vavai/riv/zamer	Investigation of multiphase reacting systems for the design of processes important in synthesis and preparation of novel materials, in energy production and in environmental protection
issn	0196-8904
number of pages	11 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures Thermodynamic Possibilities and Constraints for Pure Hydrogen Production by a Nickel and Cobalt-Based Chemical Looping Process at Lower Temperatures

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