Solar water splitting for hydrogen production with monolithic reactors

被引:210
作者
Agrafiotis, C
Roeb, M
Konstandopoulos, AG
Nalbandian, L
Zaspalis, VT
Sattler, C
Stobbe, P
Steele, AM
机构
[1] CERTH, CPERI, Thessaloniki 57001, Greece
[2] Deutsch Zentrum Luft & Raumfahrt eV, Inst Tech Thermodynam Solarforsch, D-51170 Cologne, Germany
[3] STC, DK-2840 Holte, Denmark
[4] Johnson Matthey Fuel Cells Ctr, Reading RG4 9NH, Berks, England
关键词
water-splitting; solar; redox materials; iron oxide; honeycomb reactors; hydrogen;
D O I
10.1016/j.solener.2005.02.026
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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 degrees C) and could be regenerated at temperatures below 1300 degrees 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 degrees C throughout the honeycomb, making thus feasible the operation of the complete cycle by a single solar energy converter. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:409 / 421
页数:13
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