Enhanced Thermochemical H2 Production on Ca-Doped Lanthanum Manganite Perovskites Through Optimizing the Dopant Level and Re-oxidation Temperature

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Author(s)
Wang, Lulu
Al-Mamun, Mohammad
Liu, Porun
Zhong, Yu Lin
Wang, Yun
Yang, Hua Gui
Zhao, Huijun
Year published
2018
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Perovskite material is one of the promising classes of redox catalysts for hydrogen production through two-step thermochemical H2O splitting. Herein, an analogue of La1−xCa x MnO3 perovskite was systematically investigated as a catalyst for thermochemical H2 evolution. The Ca doping level (x = 0.2, 0.4, 0.6, 0.8) and re-oxidation temperature were comprehensively optimized for the improvement of catalytic performance. According to our experimental results, La0.6Ca0.4MnO3 perovskite displayed the highest yield of H2 at the re-oxidation temperature of 900 °C and the obtained H2 production was ~ 10 times higher than that of the ...
View more >Perovskite material is one of the promising classes of redox catalysts for hydrogen production through two-step thermochemical H2O splitting. Herein, an analogue of La1−xCa x MnO3 perovskite was systematically investigated as a catalyst for thermochemical H2 evolution. The Ca doping level (x = 0.2, 0.4, 0.6, 0.8) and re-oxidation temperature were comprehensively optimized for the improvement of catalytic performance. According to our experimental results, La0.6Ca0.4MnO3 perovskite displayed the highest yield of H2 at the re-oxidation temperature of 900 °C and the obtained H2 production was ~ 10 times higher than that of the benchmark ceria catalyst under the same experimental condition. More importantly, La0.6Ca0.4MnO3 perovskite catalyst exhibited impressive cyclic stability in repetitive O2 and H2 test.
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View more >Perovskite material is one of the promising classes of redox catalysts for hydrogen production through two-step thermochemical H2O splitting. Herein, an analogue of La1−xCa x MnO3 perovskite was systematically investigated as a catalyst for thermochemical H2 evolution. The Ca doping level (x = 0.2, 0.4, 0.6, 0.8) and re-oxidation temperature were comprehensively optimized for the improvement of catalytic performance. According to our experimental results, La0.6Ca0.4MnO3 perovskite displayed the highest yield of H2 at the re-oxidation temperature of 900 °C and the obtained H2 production was ~ 10 times higher than that of the benchmark ceria catalyst under the same experimental condition. More importantly, La0.6Ca0.4MnO3 perovskite catalyst exhibited impressive cyclic stability in repetitive O2 and H2 test.
View less >
Journal Title
Acta Metallurgica Sinica (English Letters)
Copyright Statement
© The Chinese Society for Metals and Springer-Verlag GmbH Germany, part of Springer Nature 2018. This is an electronic version of an article published in Acta Metallurgica Sinica (English Letters), 2018, Volume 31, Issue 4, pp 431–439. Acta Metallurgica Sinica (English Letters) is available online at: http://link.springer.com/ with the open URL of your article.
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This publication has been entered into Griffith Research Online as an Advanced Online Version.
Subject
Other chemical sciences not elsewhere classified
Resources engineering and extractive metallurgy