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Development of reactive ceramics for conversion of concentrated solar heat into solar hydrogen with two-step water-splitting reaction / H. Kaneko in Transactions of the ASME. Journal of solar energy engineering, Vol. 132 N° 2 (Mai 2010) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 132 N° 2 (Mai 2010) . - pp. [021202/1-4] Titre : Development of reactive ceramics for conversion of concentrated solar heat into solar hydrogen with two-step water-splitting reaction Type de document : texte imprimé Auteurs : H. Kaneko, Auteur ; S. Taku, Auteur ; Y. Naganuma, Auteur Année de publication : 2011 Article en page(s) : pp. [021202/1-4] Note générale : Energie Solaire Langues : Anglais (eng) Mots-clés : Reactive  ceramics  Concentrated  solar  heat  Hydrogen  production  Two-step  water-splitting  process  Ceria Index. décimale : 621.47 Résumé : The reactive ceramics suitable for the rotary-type solar reactor (proposed by Tokyo Institute of Technology, Tokyo) with two-step water-splitting reaction were developed. It is confirmed that O2 gas is evolved in the two-step water-splitting reaction with the reactive ceramics vigorously by rapid heating (-O2-releasing reaction). The -O2-releasing reaction is due to the formation of interstitial defect and the conversion of lattice oxygen into O2 gas at a nonequilibrium state. Reactive ceramics (NiFe2O4 and yttria stabilized zirconia (YSZ)-NiFe2O4 solid solution) can absorb solar thermal energy and convert thermal energy into chemical energy under high O2 partial pressure atmosphere in the -O2-releasing reaction. Repetitive evolutions of O2 gas were observed in the two-step water-splitting reaction with YSZ-Fe3O4 solid solution and cerium based metal oxides (CeO2–NiO, CeO2–ZrO2, and CeO2–Ta2O5) at high O2 partial pressure. The CeO2–Ta2O5 (Ce:Ta=90:10) released a large amount of O2 gas (3.95 cm3/g) in the -O2 releasing reaction in the flow of air. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO00013200 [...] [article] Development of reactive ceramics for conversion of concentrated solar heat into solar hydrogen with two-step water-splitting reaction [texte imprimé] / H. Kaneko, Auteur ; S. Taku, Auteur ; Y. Naganuma, Auteur . - 2011 . - pp. [021202/1-4]. Energie Solaire Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 132 N° 2 (Mai 2010) . - pp. [021202/1-4] Mots-clés : Reactive  ceramics  Concentrated  solar  heat  Hydrogen  production  Two-step  water-splitting  process  Ceria Index. décimale : 621.47 Résumé : The reactive ceramics suitable for the rotary-type solar reactor (proposed by Tokyo Institute of Technology, Tokyo) with two-step water-splitting reaction were developed. It is confirmed that O2 gas is evolved in the two-step water-splitting reaction with the reactive ceramics vigorously by rapid heating (-O2-releasing reaction). The -O2-releasing reaction is due to the formation of interstitial defect and the conversion of lattice oxygen into O2 gas at a nonequilibrium state. Reactive ceramics (NiFe2O4 and yttria stabilized zirconia (YSZ)-NiFe2O4 solid solution) can absorb solar thermal energy and convert thermal energy into chemical energy under high O2 partial pressure atmosphere in the -O2-releasing reaction. Repetitive evolutions of O2 gas were observed in the two-step water-splitting reaction with YSZ-Fe3O4 solid solution and cerium based metal oxides (CeO2–NiO, CeO2–ZrO2, and CeO2–Ta2O5) at high O2 partial pressure. The CeO2–Ta2O5 (Ce:Ta=90:10) released a large amount of O2 gas (3.95 cm3/g) in the -O2 releasing reaction in the flow of air. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO00013200 [...]