NO reduction with NH3 over chromia-vanadia catalysts supported on TiO2:: an in situ Raman spectroscopic study

被引：11

作者：

Giakoumelou, I

Fountzoula, C

Kordulis, C

Boghosian, S ^{[1
]}

机构：

[1] Univ Patras, Dept Chem Engn, GR-26110 Patras, Greece

[2] ICE HT, FORTH, Patras, Greece

[3] Univ Patras, Dept Chem, Patras, Greece

来源：

CATALYSIS TODAY | 2002年 / 73卷 / 3-4期

关键词：

in situ Raman spectroscopy; chromia and vanadia; selective catalytic reduction;

D O I：

10.1016/S0920-5861(02)00008-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In situ Raman spectroscopy was used for studying the ternary 2% CrO3-6% V2O5/TiO2 catalyst, for which a synergistic effect between vanadia and chromia leads to enhanced catalytic performance for the selective catalytic reduction (SCR) of NO with NH3. The structural properties of this catalyst were studied under NH3/NO/O-2/N-2/SO2/H2O atmospheres at temperatures up to 400degreesC and major structural interactions between the surface chromia and vanadia species are observed. The effects of oxygen, ammonia, water vapor and sulfur dioxide presence on the in situ Raman spectra are presented and discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：255 / 262

页数：8

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