Copper active sites for the selective reduction of nitrogen monoxide by propane on Cu-MFI catalysts and non-zeolitic supported-copper solids

被引：20

作者：

Chajar, Z ^{[1
]}

Le Chanu, V ^{[1
]}

Primet, M ^{[1
]}

Praliaud, H ^{[1
]}

机构：

[1] Univ Lyon 1, UM 5634 CNRS, Lab Applicat Chim Environm, F-69622 Villeurbanne, France

来源：

CATALYSIS LETTERS | 1998年 / 52卷 / 1-2期

关键词：

DeNOx; selective nitric oxide reduction; Cu-MFI catalysts; Cu/Al2O3; Cu/SiO2; Cu/SiO2-Al2O3; Cu on non-zeolitic supports; Si/Al ratio; copper active sites;

D O I：

10.1023/A:1019023504284

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The selective reduction of NO by C3H8 is performed on copper-based catalysts: Cu/Al2O3, Cu/SiO2, Cu/SiO2-Al2O3 solids, fresh and hydrothermally-treated Cu-MFI with various Si/Al ratios. For all the Cu-MFI solids and for the non-zeolitic supported-copper solids with low copper loadings, O-2 promotes the reduction of NO. The C3H8-NO reaction rate correlates with the number of accessible and isolated Cun+ ions deduced from the infrared spectroscopy of adsorbed CO. When only one type of sites is detected, the FTIR spectroscopy of adsorbed CO allows an estimation of the copper dispersion.

引用

页码：97 / 102

页数：6

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