Noteworthy performance of La1−xCaxMnO3 perovskites in generating H2 and CO by the thermochemical splitting of H2O and CO2

Sunita Dey; B. S. Naidu; A. Govindaraj; C. N. R. Rao

doi:10.1039/C4CP04578E

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Noteworthy performance of La_1−xCa_xMnO₃ perovskites in generating H₂ and CO by the thermochemical splitting of H₂O and CO₂†

Sunita Dey,^a B. S. Naidu,

^a A. Govindaraj^ab and C. N. R. Rao*^ab

Author affiliations

* Corresponding authors

^a Chemistry and Physics of Materials Unit, New Chemistry Unit, Sheikh Saqr Laboratory, International Centre for Materials Science (ICMS) and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore-560064, India
E-mail: cnrrao@jncasr.ac.in

^b Solid state and Structural Chemistry Unit, Indian Institute of Science, Bangalore-560012, India

Abstract

Perovskite oxides of the composition La_1−xCa_xMnO₃ (LCM) have been investigated for the thermochemical splitting of H₂O and CO₂ to produce H₂ and CO, respectively. The study was carried out in comparison with La_1−xSr_xMnO₃, CeO₂ and other oxides. The LCM system exhibits superior characteristics in high-temperature evolution of oxygen, and in reducing CO₂ to CO and H₂O to H₂. The best results were obtained with La_0.5Ca_0.5MnO₃ whose performance is noteworthy compared to that of other oxides including ceria. The orthorhombic structure of LCM seems to be a crucial factor.

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Article information

DOI: https://doi.org/10.1039/C4CP04578E
Article type: Communication
Submitted: 09 Oct 2014
Accepted: 30 Oct 2014
First published: 05 Nov 2014

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Phys. Chem. Chem. Phys., 2015,17, 122-125

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Noteworthy performance of La_1−xCa_xMnO₃ perovskites in generating H₂ and CO by the thermochemical splitting of H₂O and CO₂

S. Dey, B. S. Naidu, A. Govindaraj and C. N. R. Rao, Phys. Chem. Chem. Phys., 2015, 17, 122 DOI: 10.1039/C4CP04578E

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