Microporous Crystal 12CaO·7Al2O3 Encaging Abundant O- Radicals
- 10 January 2002
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 124 (5) , 738-739
- https://doi.org/10.1021/ja016112n
Abstract
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.Keywords
This publication has 8 references indexed in Scilit:
- Addition of Oxide Radical Ions (O-) to Nitrite and Oxide Ions (O2-) to Nitrogen DioxideJournal of the American Chemical Society, 2000
- Crystallization of Amorphous Precursors in the Calcia–Alumina System: A Differential Scanning Calorimetry StudyJournal of the American Ceramic Society, 2000
- Are There Metal Oxides That Prefer a [2 + 2] Addition over a [3 + 2] Addition to Olefins? Theoretical Study of the Reaction Mechanism of LReO3 Addition (L = O-, Cl, Cp) to Ethylene1Journal of the American Chemical Society, 1999
- High oxide ion conductivity in Ca12Al14O33Nature, 1988
- Occurrence of superoxide radical ion in crystalline calcium aluminate 12CaO.7Al2O3 prepared via solid-state reactionsInorganic Chemistry, 1987
- Surface reactions of oxygen ions. I. Dehydrogenation of alkanes by oxygen(1-) ions on magnesium oxideThe Journal of Physical Chemistry, 1977
- Excess oxygen and the stability of “12CaO.7A12O3”Cement and Concrete Research, 1971
- Anion Substitution and Structure of 12CaO·7A122O,3Journal of the American Ceramic Society, 1964