Solar water splitting for hydrogen production with monolithic reactors |
| |
Authors: | C. Agrafiotis A.G. Konstandopoulos L. Nalbandian C. Sattler A.M. Steele |
| |
Affiliation: | a Chemical Process Engineering Research Institute, Center for Research and Technology—Hellas (CERTH/CPERI), P.O. Box 361, 57001 Thermi-Thessaloniki, Greece b Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Technische Thermodynamik, Solarforschung, D-51170 Köln, Germany c Stobbe Tech Ceramics (STC), Vejlemosevej 60, DK-2840, Holte, Denmark d Johnson Matthey Fuel Cells Centre, Sonning Common, RG4 9NH Reading, UK |
| |
Abstract: | The present work proposes the exploitation of solar energy for the dissociation of water and production of hydrogen via an integrated thermo-chemical reactor/receiver system. The basic idea is the use of multi-channelled honeycomb ceramic supports coated with active redox reagent powders, in a configuration similar to that encountered in automobile exhaust catalytic aftertreatment.Iron-oxide-based redox materials were synthesized, capable to operate under a complete redox cycle: they could take oxygen from water producing pure hydrogen at reasonably low temperatures (800 °C) and could be regenerated at temperatures below 1300 °C. Ceramic honeycombs capable of achieving temperatures in that range when heated by concentrated solar radiation were manufactured and incorporated in a dedicated solar receiver/reactor. The operating conditions of the solar reactor were optimised to achieve adjustable, uniform temperatures up to 1300 °C throughout the honeycomb, making thus feasible the operation of the complete cycle by a single solar energy converter. |
| |
Keywords: | Water-splitting Solar Redox materials Iron oxide Honeycomb reactors Hydrogen |
本文献已被 ScienceDirect 等数据库收录! |
|