Generation of Active Oxygens Using 12CaO·7Al2O3 Ceramics

Katsuro Hayashi; Masahiro Hirano; Satoru Matsuishi; Hideo Hosono

doi:10.14853/pcersj.2002F.0.218.0

15th Fall Meeting of The Ceramic Society of Japan

DOI https://doi.org/10.14853/pcersj.2002F.0.218.0

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Host: The Ceramic Society of Japan

Generation of Active Oxygens Using 12CaO·7Al₂O₃ Ceramics

Katsuro Hayashi, Masahiro Hirano, Satoru Matsuishi, Hideo Hosono

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Keywords: Calcium aluminate, Oxidation reactivity, Oxygen anion radical, Superoxide radical, Calathrate, Ionic conduction

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 218

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Abstract

We report a microporous material, 12CaO·7Al₂O₃ (C12A7), that encages large amounts (∼2 × 10²⁰ cm^-3) of O^- ions and provides efficient conversion of O₂ into O^- ions using its inverse zeolitic structure (i.e., anions are encaged in the positively-charged lattice framework) and fast oxygen ion conductivity. Applying an electric field to the compound enables selective sustainable emission of O^- ions with a beam intensity larger, by three orders of magnitude, than that obtained for YSZ.

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