Thermochemical two-step water splitting cycle using perovskite oxides based on LaSrMnO3 redox system for solar H2 production

被引：28

作者：

Gokon, Nobuyuki ^{[1
,2
,3
]}

Hara, Kazuki ^{[2
,3
]}

Sugiyama, Yuta ^{[2
,3
]}

Bellan, Selvan ^{[3
,4
]}

Kodama, Tatsuya ^{[1
,2
,3
]}

Hyun-seok, Cho ^{[1
,2
]}

机构：

[1] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, 8050 Ikarashi 2 Nocho, Niigata 9502181, Japan

[2] Niigata Univ, Pacific Rim Solar Fuels Res Ctr, 8050 Ikarashi 2 Nocho, Niigata 9502181, Japan

[3] Niigata Univ, Grad Sch Sci & Technol, 8050 Ikarashi 2 Nocho, Niigata 9502181, Japan

[4] Niigata Univ, Inst Res Promot, Nishi Ku, 8050 Ikarashi 2 Nocho, Niigata 9502181, Japan

来源：

THERMOCHIMICA ACTA | 2019年 / 680卷

关键词：

Concentrated solar radiation; Perovskite oxide; Thermochemical cycle; Water splitting; Hydrogen production; HYDROGEN-PRODUCTION; CO; OXYGEN; GENERATION; SR;

D O I：

10.1016/j.tca.2019.178374

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A thermochemical two-step water-splitting cycle using perovskite oxides based on LaSrMnAlO3 was examined for hydrogen production from water using concentrated solar radiation. Concurrent Sr and Mn substitutions in La1-xSrxMnxAl1-xO3, Sr and Al substitutions in La1-ySryMn1-yAlyO3, and substitution of Al by Cr in La0.7Sr0.3Mn1-zCrzO3 were examined, and their kinetics, oxygen/hydrogen productivity, and repeatability were compared against LaSrMnAlO3. The impact of the chemical compositions of the perovskite oxides was systematically examined at a thermal reduction temperature of 1350 degrees C and water decomposition temperatures of 1000-1200 degrees C. From the viewpoints of average amounts of oxygen and hydrogen produced and the H-2/O-2 ratios, La0.7Sr0.3Mo0.9Cr0.1O3 and La0.7Sr0.3Mn0.8Cr0.2O3 provided the most reproducible productions of oxygen and hydrogen in the thermochemical two-step water-splitting cycle.

引用

页数：13

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