The production of Zn from ZnO in a high-temperature solar decomposition quench process - I. The scientific framework for the process

Robert D Palumbo, J. Lédé, O. Boutin, E. Elorza Ricart, A. Steinfeld, S. Möller, A. Weidenkaff, E. A. Fletcher, J. Bielicki

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Abstract

We present a theoretical and experimental study of a solar decomposition process for producing Zn and O2 from ZnO(s). The decomposition step occurs at temperatures near 2000 K, and the gaseous products are quenched. A numerical model that uses the latest kinetic data for the decomposition and reoxidation reactions suggests that Zn conversions as high as 80% can be obtained with solar flux densities of 2 MW m-2. The decomposition and quench were effected in a solar furnace and in a solar furnace simulator. Zn yields were as high as 90% depending in part on the dilution ratio and quenching surface's temperature.

Original languageEnglish (US)
Pages (from-to)2503-2517
Number of pages15
JournalChemical Engineering Science
Volume53
Issue number14
DOIs
StatePublished - Jul 15 1998

Keywords

  • Decomposition
  • Quench
  • Solar chemistry
  • Solar energy
  • Solar fuel
  • Zinc
  • Zinc oxide

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    Palumbo, R. D., Lédé, J., Boutin, O., Ricart, E. E., Steinfeld, A., Möller, S., Weidenkaff, A., Fletcher, E. A., & Bielicki, J. (1998). The production of Zn from ZnO in a high-temperature solar decomposition quench process - I. The scientific framework for the process. Chemical Engineering Science, 53(14), 2503-2517. https://doi.org/10.1016/S0009-2509(98)00063-3