"2006-08-27+02:00"^^ . "1"^^ . "Termodynamick\u00E9 mo\u017Enosti a omezen\u00ED pro v\u00FDrobu \u010Dist\u00E9ho vod\u00EDku pomoc\u00ED \u017Eeleza s vyu\u017Eit\u00EDm cyklick\u00E9ho chemick\u00E9ho procesu za ni\u017E\u0161\u00EDch teplot"@cs . . "[5D52F9F824CD]" . "1338;1339" . . . "Process Engineering Publisher" . . "Thermodynamic Possibilities and Constraints for Pure Hydroden Production by Iron Based Chemical Looping Process at Lower Temperatures"@en . "Praha" . "Praha" . "Iron offers possibility of transformation of a reducing gas ( CO, syngas, methane etc.) into hydrogen by a cyclic process based on iron oxide reduction and release of hydrogen in the next step by steam oxidation. Thermodynamics and chemical equilibrium for reduction of magnetite by hydrogen, carbon monoxide, model syngas and methane and for oxidation of iron by steam has been studied in a temperature range 400 \u2013 850 K. Attention was concentrated also on possible formation of undesired soot, iron carbide and iron carbonate as precursors for CO and CO2 formation in the steam oxidation step. Oxidation of iron by steam is thermodynamically favoured at temperatures 400 \u2013 800 K enabling high hydrogen yields. Iron oxide (magnetite) reduction is the more difficult step, requiring rather higher temperature and higher CO, H2 or methane concentrations in gaseous mixtures." . . "503789" . . . "Thermodynamic Possibilities and Constraints for Pure Hydroden Production by Iron Based Chemical Looping Process at Lower Temperatures" . "Siewiorek, A." . "Thermodynamic Possibilities and Constraints for Pure Hydroden Production by Iron Based Chemical Looping Process at Lower Temperatures" . "Iron offers possibility of transformation of a reducing gas ( CO, syngas, methane etc.) into hydrogen by a cyclic process based on iron oxide reduction and release of hydrogen in the next step by steam oxidation. Thermodynamics and chemical equilibrium for reduction of magnetite by hydrogen, carbon monoxide, model syngas and methane and for oxidation of iron by steam has been studied in a temperature range 400 \u2013 850 K. Attention was concentrated also on possible formation of undesired soot, iron carbide and iron carbonate as precursors for CO and CO2 formation in the steam oxidation step. Oxidation of iron by steam is thermodynamically favoured at temperatures 400 \u2013 800 K enabling high hydrogen yields. Iron oxide (magnetite) reduction is the more difficult step, requiring rather higher temperature and higher CO, H2 or methane concentrations in gaseous mixtures."@en . "Rogut, J." . . "V rozmez\u00ED teplot 400 \u2013 1000 K byly studov\u00E1ny termodynamika a chemick\u00E9 rovnov\u00E1hy pro redukci Cr2O3 , Mn3O4 a NiO vod\u00EDkem , CO, syntetick\u00FDm plynem, metanem a pro oxidaci relevantn\u00EDch produkt\u016F Cr, MnO a Ni vodn\u00ED parou. Pozornost byla soust\u0159ed\u011Bna tak\u00E9 na mo\u017Enou tvorbu ne\u017E\u00E1douc\u00EDch saz\u00ED, karbid\u016F a uhli\u010Ditan\u016F b\u011Bhem reduk\u010Dn\u00EDho kroku, kter\u00E9 vedouc n\u00E1sledn\u011B k uvol\u0148ov\u00E1n\u00ED CO a CO2 v oxida\u010Dn\u00EDm kroku. Redukce Cr2O3 a MnO na kovov\u00FD chrom a mangan pomoc\u00ED vod\u00EDku, CO nebo metanu je vylou\u010Dena za teplot 400 \u2013 1000 K. Redukce Mn3O4 a NiO vod\u00EDkem, CO a CH4 za t\u011Bchto ni\u017E\u0161\u00EDch teplot je termodynamicky preferov\u00E1na."@cs . . . . "Thermodynamic Possibilities and Constraints for Pure Hydroden Production by Iron Based Chemical Looping Process at Lower Temperatures"@en . "iron; thermodynamics; hydrogen"@en . "40"^^ . "Z(AV0Z40720504)" . . . "Svoboda, Karel" . "RIV/67985858:_____/06:00055249!RIV07-AV0-67985858" . . . "Summaries 4." . "Slowinski, G." . "Termodynamick\u00E9 mo\u017Enosti a omezen\u00ED pro v\u00FDrobu \u010Dist\u00E9ho vod\u00EDku pomoc\u00ED \u017Eeleza s vyu\u017Eit\u00EDm cyklick\u00E9ho chemick\u00E9ho procesu za ni\u017E\u0161\u00EDch teplot"@cs . "80-86059-45-6" . "RIV/67985858:_____/06:00055249" . . "4"^^ .