The heterogeneous oxidation of Zn(g) is considered as an improved approach to the production of H2 and CO in the two-step Zn/ZnO solar thermochemical cycle. The rate of Zn(g) oxidation by H2O and CO2 is measured gravimetrically in a quartz tubular flow reactor for temperatures between 800 and 1150 K, Zn(g) concentrations up to 36 mol%, and H2O/CO2 concentrations up to 45 mol%. The rate of the heterogeneous oxidation of Zn(g) by both H2O and CO2 is on the order of 10−8–10−5 mol cm−2 s−1. For similar oxidizing conditions, H2O oxidizes Zn(g) three times as fast as CO2, indicative of a lower heterogeneous oxidation activation energy in the H2O system. Less than one second is required to convert more than 85% of Zn to ZnO for all temperatures in both the H2O and CO2 reacting systems.
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ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology
July 23–26, 2012
San Diego, California, USA
Conference Sponsors:
- Advanced Energy Systems Division
- Solar Energy Division
ISBN:
978-0-7918-4481-6
PROCEEDINGS PAPER
Rapid Production of Hydrogen and Carbon Monoxide via the Heterogeneous Oxidation of Zn(g) Available to Purchase
Luke J. Venstrom,
Luke J. Venstrom
University of Minnesota, Minneapolis, MN
Search for other works by this author on:
Jane H. Davidson
Jane H. Davidson
University of Minnesota, Minneapolis, MN
Search for other works by this author on:
Luke J. Venstrom
University of Minnesota, Minneapolis, MN
Jane H. Davidson
University of Minnesota, Minneapolis, MN
Paper No:
ES2012-91136, pp. 1101-1108; 8 pages
Published Online:
July 23, 2013
Citation
Venstrom, LJ, & Davidson, JH. "Rapid Production of Hydrogen and Carbon Monoxide via the Heterogeneous Oxidation of Zn(g)." Proceedings of the ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2012 6th International Conference on Energy Sustainability, Parts A and B. San Diego, California, USA. July 23–26, 2012. pp. 1101-1108. ASME. https://doi.org/10.1115/ES2012-91136
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