FTIR study of NO adsorption over Co/ZSM-5 and [Co+Mg (Sr)]/ZSM-5

被引：0
|
作者：
Zhu, CY [1 ]
Lee, CW
Chong, PJ
机构：
[1] Fudan Univ, Journal Fudan Univ Nat Sci, Shanghai 200433, Peoples R China
[2] Korea Res Inst Chem Technol, Solid State Chem Lab, Taejon 305606, South Korea
来源：
ACTA CHIMICA SINICA | 2003年 / 61卷 / 02期
关键词：
FIIR; Co/ZSM-5; absorbed species; SCR; OH stretching region;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The adsorption of NO on Co/ZSM-5 zeolites with different Co content is studied by FTIR spectroscopy. The dominant NO species absorbed on Co/ZSM-5 is found to be in a dinitrosyl form, as demonstrated by the IR bands at 1813 and 1896 cm(-1). The mononitrosyl form occurs in the region of 1939-1941 cm-1 as a minor species. Based on the integrated intensities of IR bands at 1813 and 1896 cm-1, an experimental equation, i.e., C-NO = I-NO/ (epsilon(NO) (.) m/3.14), has been proposed for estimating the amount of adsorbed NO molecules (C-NO), from which the values of CNO on both Co/ZSM-5 and [ Co + Mg(Sr)/ZSM-5 have been calculated. In addition, the OH stretching region on Co/ZSM-5 and [ Co + Mg (Sr)]/ZSM-5 is studied by FTIR. These studies may provide useful information. for SCR catalysts of NOx.
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页码：218 / 224
页数：7
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