NOx Adsorption/Desorption Processes Over Ce0.76Zr0.24O2 and Their Influence on DeSoot Activity: Effect of the Catalyst Calcination Temperature

被引：19

作者：

Atribak, Idriss ^{[1
]}

Azambre, Bruno ^{[2
]}

Bueno-Lopez, Agustin ^{[1
]}

Garcia-Garcia, Avelina ^{[1
]}

机构：

[1] Univ Alicante, Dept Inorgan Chem, E-03080 Alicante, Spain

[2] Univ Paul Verlaine de Metz, LCME, F-57500 St Avold, France

来源：

TOPICS IN CATALYSIS | 2009年 / 52卷 / 13-20期

关键词：

Ceria-zirconia; Calcination temperature; Catalysed soot oxidation; NOx adsorption/desorption; In situ DRIFTS; DIESEL SOOT; COMBUSTION; CEO2-ZRO2; OXYGEN; CEO2;

D O I：

10.1007/s11244-009-9389-8

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

The catalytic activity of a Ce0.76Zr0.24O2 mixed oxide, calcined at different temperatures, for soot oxidation under NOx/O-2 was correlated with the catalytic activity for NO2 production. The Ce0.76Zr0.24O2 mixed oxide samples were prepared by co-precipitation and calcination at different temperatures: 500-1000 degrees C. A satisfactory correlation between the total amount of NO2 desorbed after NO + O-2 adsorption at 60 degrees C and the T50% for soot combustion was found. The NOx adsorption process was also explored by in situ DRIFTS.

引用

页码：2092 / 2096

页数：5

共 9 条

[1]

Promotional effect of rare earths and transition metals in the combustion of diesel soot over CeO2 and CeO2-ZrO2 [J].