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Solar Hydrogen Production by a Two-Step Cycle based on Mixed Iron Oxides

Sattler, Christian and Roeb, Martin and Klüser, Ruth and Oliveira, Lamark and Konstandopoulos, Athanasios G. and Agrafiotis, Christos and Zaspalis, V.T. and Nalbandian, L. and Steele, Andrew M. and Stobbe, Per (2006) Solar Hydrogen Production by a Two-Step Cycle based on Mixed Iron Oxides. Journal of Solar Energy Engineering, 128, pp. 125-133. American Society of Mechanical Engineers.

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Abstract

A promising method for the conversion and storage of solar energy into hydrogen is the dissociation of water into oxygen and hydrogen, carried out via a two-step process using metal oxide redox systems such as mixed iron oxides, coated upon multi-channeled honeycomb ceramic supports capable of absorbing solar irradiation, in a configuration similar to that encountered in automobile exhaust catalytic converters. With this configuration, the whole process can be carried out in a single solar energy converter, the process temperature can be significantly lowered compared to other thermo-chemical cycles and the recombination of oxygen and hydrogen is prevented by fixing the oxygen in the metal oxide. For the realization of the integrated concept, research work proceeded in three parallel directions: synthesis of active redox systems, manufacture of ceramic honeycomb supports and manufacture, testing and optimization of operating conditions of a thermochemical solar receiver-reactor. The receiver-reactor has been developed and installed in the solar furnace in Cologne, Germany. It was proven that solar hydrogen production is feasible by this process demonstrating that multicycling of the process was possible in principle.

Document Type:Article
Title:Solar Hydrogen Production by a Two-Step Cycle based on Mixed Iron Oxides
Authors:
AuthorsInstitution or Email of Authors
Sattler, ChristianUNSPECIFIED
Roeb, MartinUNSPECIFIED
Klüser, RuthUNSPECIFIED
Oliveira, LamarkUNSPECIFIED
Konstandopoulos, Athanasios G.CERTH/CPERI APTL
Agrafiotis, ChristosCERTH/CPERI APTL
Zaspalis, V.T.CERTH/CPERI APTL
Nalbandian, L.CERTH/CPERI APTL
Steele, Andrew M.Johnson Matthey
Stobbe, PerStobbeTech AB
Date:May 2006
Journal or Publication Title:Journal of Solar Energy Engineering
Volume:128
Page Range:pp. 125-133
Editors:
EditorsEmail
Steinfeld, AldoUNSPECIFIED
Publisher:American Society of Mechanical Engineers
Series Name:Transactions of ASME
Status:Published
Keywords:hydrogen, redox system, honeycomb reactors, solar, thermochemical cycle
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solare Stoffumwandlung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Technical Thermodynamics > Solar Research
Institute of Technical Thermodynamics
Deposited By: Dr.rer.nat. Christian Sattler
Deposited On:04 Jan 2007
Last Modified:12 Dec 2013 20:22

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