NDLI: H2 Generation by Two-Step Water Splitting With CeO2-MOx Using Concentrated Solar Thermal Energy

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kaneko, Hiroshi Ishihara, Hideyuki Miura, Takao Nakajima, Hiromitsu Hasegawa, Noriko Tamaura, Yutaka
Copyright Year	2006
Abstract	CeO2-MOx (M = Mn, Fe, Ni, Cu) reactive ceramics, having high melting points and high conductivities of O2−, were synthesized with the combustion method from their nitrates for solar hydrogen production. The prepared CeO2-MOx samples were solid solutions between CeO2 and MOx with the fluorite structure through XRD. Two-step water splitting reactions with CeO2-MOx reactive ceramics proceeded at 1573–1773K for the O2 releasing step and at 1273K for the H2 generation step by irradiation of infrared imaging furnace as a solar simulator. The amounts of O2 evolved in the O2 releasing reaction with CeO2-MOx and CeO2 systems increased with the increase of the reaction temperature. The amounts of H2 evolved in the H2 generation reaction with CeO2-MOx systems except for M = Cu were more than that of CeO2 system after the O2 releasing reaction at the temperatures of 1673 and 1773K. The largest amount of H2 was generated with CeO2-NiO after the O2 releasing reaction at 1573, 1673 and 1773K. The O2 releasing reaction at 1673K and H2 generation reaction at 1273K with CeO2-Fe2O3 were repeated four times with the evolving of O2 (1.3cm3/g-sample) and H2 (2.3cm3/g-sample) gases, respectively. The possibility of solar hydrogen production with CeO2-MOx (M = Mn, Fe, Ni) reactive ceramics system by using concentrated solar thermal energy was suggested.
Sponsorship	Solar Energy Division
Starting Page	215
Ending Page	220
Page Count	6
File Format	PDF
ISBN	0791847454
DOI	10.1115/ISEC2006-99065
Volume Number	Solar Energy
Conference Proceedings	ASME 2006 International Solar Energy Conference
Language	English
Publisher Date	2006-07-08
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Water Temperature Irradiation (radiation exposure) Combustion Ceramics Gases Furnaces Solid solutions Concentrating solar power Solar energy Infrared imaging Melting point Hydrogen production
Content Type	Text
Resource Type	Article

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