Isothermal redox for H2O and CO2 splitting - A review and perspective

被引：69

作者：

Al-Shankiti, Ibraheam ^{[1
,2
]}

Ehrhart, Brian D. ^{[1
]}

Weimer, Alan W. ^{[1
]}

机构：

[1] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA

[2] KAUST, Saudi Basic Ind Corp SABIC, Corp Res & Innovat Ctr CRI, Thuwal, Saudi Arabia

来源：

SOLAR ENERGY | 2017年 / 156卷

关键词：

SOLAR HEAT; EFFICIENCY; WATER; CYCLE; OXIDE; GENERATION; CERIA;

D O I：

10.1016/j.solener.2017.05.028

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：

Solar thermal splitting of water or carbon dioxide is a promising technology for producing hydrogen or carbon monoxide. In a two-step cycle, a metal oxide is thermally reduced with concentrated solar radiation to release oxygen. The reduced metal oxide is then re-oxidized with steam or carbon dioxide to produce hydrogen or carbon monoxide, or simultaneously with both to produce syngas. The two-step redox cycle can be operated either as a temperature swing where there is a temperature difference between the reduction and oxidation steps or isothermally. This review article discusses various aspects of operating the redox cycle isothermally including redox cycle thermodynamics and overall system efficiency and describes solar reactor concepts based on isothermal operation. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：21 / 29

页数：9

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