In situ FT-IR study of NH3 formation during the reduction of NOx with propane on H/Cu-ZSM-5 in excess oxygen

被引：54

作者：

Poignant, F ^{[1
]}

Saussey, J ^{[1
]}

Lavalley, JC ^{[1
]}

Mabilon, G ^{[1
]}

机构：

[1] INST FRANCAIS PETR,F-92506 RUEIL MALMAISON,FRANCE

来源：

CATALYSIS TODAY | 1996年 / 29卷 / 1-4期

关键词：

H/Cu-ZSM-5; FT-IR; NOx reduction;

D O I：

10.1016/0920-5861(95)00285-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

IR experiments under flow of NO and propane on H/Cu-ZSM-5 evidence at 623 K the appearance of bands at 2248, 2157 and 2047 cm(-1), tentatively assigned through the use of (NO)-N-15 to nitrile, carbonyl (CO-Cu+) and isocyano species respectively. Addition of O-2 suggests conversion of isocyano to isocyanato species (2208 cm(-1)) which by hydrolysis leads to NH3 formation, revealed by IR bands at 3366, 3290, 3192 and 1610 cm(-1).

引用

页码：93 / 97

页数：5

共 27 条

[21] ADSORPTION AND DECOMPOSITION OF HNCO ON CU(111) SURFACE STUDIED BY AUGER-ELECTRON, ELECTRON-ENERGY LOSS AND THERMAL-DESORPTION SPECTROSCOPY [J].