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Multi-Step Water Splitting with Mn-Ferrite/Sodium Carbonate System
Technical Paper
1999-01-2670
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Multi-step water splitting with Mn-ferrite(MnFe2O4)/sodium carbonate(Na2CO3) system accompanying endothermic reaction was investigated for converting solar energy into chemical energy. This water splitting is caused by the oxidation-reduction of manganese ion in the Mn-ferrite. Multi-water splitting with MnFe2O4/Na2CO3 system was consisted of three steps. The first step was hydrogen generation at 1073K. The second step was oxygen release at 1273K. The third step was Na2CO3 reproduction at 873K. The mechanism of multi-water splitting has been considered by XRD, chemical analysis of colorimetry and back titration. The temperature range 873 to 1273K is quite lower than those studied on the solar furnace reaction (O2 releasing step) in two-step water splitting (1500-2300K). This lower temperature range would permit further progress in converting the direct solar energy into chemical energy.
Authors
Citation
Hosokawa, Y., Kojima, N., Yokota, O., Hasegawa, N. et al., "Multi-Step Water Splitting with Mn-Ferrite/Sodium Carbonate System," SAE Technical Paper 1999-01-2670, 1999, https://doi.org/10.4271/1999-01-2670.Also In
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