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- Title
Review of the Two-Step H<sub>2</sub>O/CO<sub>2</sub>-Splitting Solar Thermochemical Cycle Based on Zn/ZnO Redox Reactions.
- Authors
Loutzenhiser, Peter G.; Meier, Anton; Steinfeld, Aldo
- Abstract
This article provides a comprehensive overview of the work to date on the two-step solar H2O and/or CO2 splitting thermochemical cycles with Zn/ZnO redox reactions to produce H2 and/or CO, i.e., synthesis gas-the precursor to renewable liquid hydrocarbon fuels. The two-step cycle encompasses: (1) The endothermic dissociation of ZnO to Zn and O2 using concentrated solar energy as the source for high-temperature process heat; and (2) the non-solar exothermic oxidation of Zn with H2O/CO2 to generate H2/CO, respectively; the resulting ZnO is then recycled to the first step. An outline of the underlying science and the technological advances in solar reactor engineering is provided along with life cycle and economic analyses.
- Subjects
SOLAR energy; OXIDATION-reduction reaction; RENEWABLE energy sources; HYDROCARBONS; LIQUID fuels
- Publication
Materials (1996-1944), 2010, Vol 3, Issue 11, p4922
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma3114922