Microporous crystal 12CaO·7Al2O3 encaging abundant O- radicals

Katsuro Hayashi, Masahiro Hirano, Satoru Matsuishi, Hideo Hosono

Research output: Contribution to journalArticlepeer-review

239 Citations (Scopus)


Extremely high concentrations (>1020 cm-3) of active oxygenic radicals, O- and O2-, have been created in the zeolitic crystal, 12CaO·7Al2O3 (C12A7), which can accommodate anions in its cavities. An increase in oxygen pressure and a decrease in water vapor pressure at high temperature enhance the formation of the radicals. The oxidation of Pt is observed on the surface of the material as a result of reaction with the active oxygens.

Original languageEnglish
Pages (from-to)738-739
Number of pages2
JournalJournal of the American Chemical Society
Issue number5
Publication statusPublished - Feb 6 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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