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Reactors, Kinetics, and Catalysis
CO2 reduction with Zn particles in a packed-bed reactor
Article first published online: 15 DEC 2010
DOI: 10.1002/aic.12460
Copyright © 2010 American Institute of Chemical Engineers (AIChE)
Additional Information
How to Cite
Loutzenhiser, P. G., Barthel, F., Stamatiou, A. and Steinfeld, A. (2011), CO2 reduction with Zn particles in a packed-bed reactor. AIChE J., 57: 2529–2534. doi: 10.1002/aic.12460
Publication History
- Issue published online: 3 AUG 2011
- Article first published online: 15 DEC 2010
- Accepted manuscript online: 15 OCT 2010 09:12AM EST
- Manuscript Revised: 27 SEP 2010
- Manuscript Received: 5 AUG 2010
Funded by
- Swiss National Science Foundation
- Swiss Federal Office of Energy
- Baugarten Foundation
- Abstract
- Article
- References
- Cited By
Keywords:
- energy;
- fuels;
- reactor analysis;
- surface chemistry/physics
Abstract
A two-step solar thermochemical cycle for splitting CO2 with Zn/ZnO redox reactions is considered, consisting of: (1) the endothermic dissociation of ZnO with concentrated solar radiation as the heat source and (2) the non-solar, exothermic, reduction of CO2 to CO by oxidizing Zn to ZnO; the latter is recycled to the first step. The second step of the cycle is investigated using a packed-bed reactor where micron-sized Zn particles were immobilized in mixtures with submicron-sized ZnO particles. Experimental runs were performed for Zn mass fractions in the range 67–100 wt % and CO2 concentration in the range 25–100%, yielding Zn-to-ZnO conversions up to 71% because of sintering prevention, as corroborated by SEM analysis. © 2010 American Institute of Chemical Engineers AIChE J, 2011