Isotopic study of N2O decomposition on an ion-exchanged Fe-zeolite catalyst:: mechanism of O2 formation

被引：29

作者：

Nobukawa, T ^{[1
]}

Tanaka, S ^{[1
]}

Ito, S ^{[1
]}

Tomishige, K ^{[1
]}

Kimio, SK ^{[1
]}

Kunimori, K ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

CATALYSIS LETTERS | 2002年 / 83卷 / 1-2期

关键词：

O-18; isotope; Fe-MFI catalyst; N2O decomposition; reaction mechanism;

D O I：

10.1023/A:1020636910973

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

N2O decomposition on an ion-exchanged Fe-MFI catalyst has been studied using an O-18-tracer technique in order to reveal the reaction mechanism. (N2O)-O-16 was pulsed onto an O-18(2)-treated Fe-MFI catalyst at 693 K, and the O-2 molecules produced were monitored by means of mass spectrometry. The O-18 fraction in the produced oxygen had almost half the value of that on the surface oxygen, and (OO)-O-18-O-18 was not detected. The result shows that O-2 formation proceeds via the Eley-Rideal mechanism ((N2O)-O-16 + O-18(a) --> N-2 + (OO)-O-16-O-18).

引用

页码：5 / 8

页数：4

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