Microporous crystal 12CaO•7Al2O3 encaging abundant O- radicals
Microporous crystal 12CaO•7Al2O3 encaging abundant O- radicals
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DOI：
10.1021/ja016112n
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发表时间：
2002-02-06
影响因子：
15
通讯作者：
Hosono, H
中科院分区：
文献类型：
--
作者：
Hayashi, K;Hirano, M;Hosono, H
在12 CaO·7Al_2O_3（C_12A_7）沸石晶体中产生了极高浓度（> 10 ~（20）cm ~（-3））的活性氧自由基O ~-和O ~（2-），使阴离子能被容纳在沸石晶体的空腔中。高温下氧分压的增加和水蒸气压的降低促进了自由基的形成。由于与活性氧反应，在材料表面上观察到Pt的氧化。
Extremely high concentrations (>1020cm-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.