In situ investigations of the photocatalytic decomposition of NOx on ion-exchanged silver(I) ZSM-5 catalysts

被引：37

作者：

Anpo, M

Matsuoka, M

Yamashita, H

机构：

[1] Department of Applied Chemistry, Osaka Prefecture University, Sakai, Osaka 593

来源：

CATALYSIS TODAY | 1997年 / 35卷 / 1-2期

关键词：

photocatalytic decomposition; NOx; Ag+/ZSM-5 catalysts;

D O I：

10.1016/S0920-5861(96)00125-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ag+/ZSM-5 catalyst was prepared by an ion-exchange method. In situ EXAFS, ESR, photoluminescence, and diffuse reflectance (DR) spectroscopy were applied to characterize the Ag+/ZSM-5 catalyst. UV irradiation of the Ag+/ZSM-5 catalyst in the presence of NO led to the photocatalytic conversion of NO into N-2, N2O and NO2 at temperatures as low as 298 K. The wavelengths of the effective UV irradiation were determined. The results obtained in this study suggest that electron transfer from excited Ag+ ion into the pi anti-bonding molecular orbital of NO plays a significant role in the photocatalytic decomposition of NO.

引用

收藏

页码：177 / 181

页数：5

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