Synthesis and characterization of oxide materials for thermochemical CO 2 splitting using concentrated solar energy

Andrea Ambrosini, Eric N. Coker, Mark A. Rodriguez, James E. Miller, Ellen B. Stechel

Research output: Contribution to journalConference article

Abstract

The Sunshine to Petrol project at Sandia aims to utilize concentrated solar energy to convert carbon dioxide and water to syn gas precursors for liquid hydrocarbon fuels. Solar thermochemical CO 2-splitting is possible utilizing redox-active metal oxides: MO x → MO x-y + y/2 O 2 (>1300°C) MO x-y + yCO 2→ MO x + yCO (<1200°C) M can be, but is not limited to, Fe, Co, Ni, or Ce. Ferrite-based oxides require a support, e.g. yttria-stabilized zirconia, to be repeatedly redox-active. Ceria-based materials do not require a support but present different challenges, including high reduction temperatures and low Ce utilization. A systematic study of these oxides is underway to better elucidate microstructure, structure-property relationships, and transport behavior under high-temperature reducing and oxidizing environments. The design of in-situ experiments to investigate the chemistry under operating conditions has been a main focus. The results of these experiments and how they relate to material performance will be presented.

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Publication statusPublished - Dec 1 2011
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: Aug 28 2011Sep 1 2011

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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