In situ diffuse reflectance IR of catalytic reduction of nitrogen oxides by propene in the presence of oxygen over silica-supported platinum

被引：43

作者：

Okuhara, T ^{[1
]}

Hasada, Y ^{[1
]}

Misono, M ^{[1
]}

机构：

[1] UNIV TOKYO,GRAD SCH ENGN,DEPT APPL CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

CATALYSIS TODAY | 1997年 / 35卷 / 1-2期

关键词：

NOx; diffuse reflectance IR; silica-supported platinum; isocyanate;

D O I：

10.1016/S0920-5861(96)00146-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The reaction mechanism of catalytic reduction of nitrogen oxides (NO or NO2) by propene in the presence of O-2 has been studied by means of in situ diffuse reflectance IR, combined with transient response analysis. Three surface species, organic nitro (I) (1565 cm(-1)), carbonyl (II) (1740 cm(-1)), and isocyanate species (III) (2174 cm(-1))were the main species detected during the reaction. Organic nitro (I) and isocyanate species (In) were highly reactive toward NO2 and O-2 to form N-2 and N2O, suggesting that these are the intermediates.

引用

页码：83 / 88

页数：6

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