CO and NO adsorption on VOx/SBA-15 catalysts: an FT-IR spectroscopic study

被引：0
|
作者：
R. Bulánek
N. Drenchev
P. Čičmanec
M. Setnička
机构：
[1] University of Pardubice,Department of Physical Chemistry, Faculty of Chemical Technology
来源：
Adsorption | 2013年 / 19卷
关键词：
Vanadium; SBA-15; FT-IR; Carbonyls; Nitrosyls;
D O I：
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中图分类号：
学科分类号：
摘要：
The adsorption of CO and NO over VOx-SBA-15 mesoporous materials with different vanadium content was investigated by FT-IR spectroscopy. Vanadium complexes were reduced in situ by hydrogen atmosphere at 450 °C for 3 h. Spectra of reduced samples show increasing in intensity of silanol groups, caused by dissociation of V–O(Si) bonds and formation of new H–O(Si) bonds. Reduction occurs with formation of water. The band corresponds to overtone of V=O stretching modes decreases in intensity because of oxygen withdrawing from V=O species.
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页码：339 / 347
页数：8
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