Production of solar hydrogen by a novel, 2-step, water-splitting thermochemical cycle

Y. Tamaura, A. Steinfeld, P. Kuhn and K. Ehrensberger

Energy, 1995, vol. 20, issue 4, 325-330

Abstract: A novel, two-step, water-splitting cycle is presented which, in contrast to previously proposed cycles that require upper operating temperatures above 2300 K, can be conducted at a moderate temperature. In the first endothermic step, Ni0.5Mn0.5Fe2O4 is thermally activated above 1073 K to form an oxygen-deficient ferrite. In the second step, activated ferrite is reacted with water below 1073 K to form hydrogen; the ferrite product is recycled to the first step. H2 and O2 are derived in different steps, eliminating the need for high-temperature gas separation. Both reactions have been demonstrated experimentally using concentrated solar radiation as energy source for the activation.

Date: 1995
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Citations: View citations in EconPapers (14)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:20:y:1995:i:4:p:325-330

DOI: 10.1016/0360-5442(94)00099-O

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