Study of configuration and coating thickness of vanadium on carbon-coated monoliths in the SCR of NO at low temperature

被引：18

作者：

García-Bordejé, E ^{[1
]}

Calvillo, L ^{[1
]}

Lázaro, MJ ^{[1
]}

Moliner, R ^{[1
]}

机构：

[1] CSIC, Inst Carboquim, Zaragoza 50015, Spain

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2004年 / 43卷 / 15期

关键词：

D O I：

10.1021/ie0498854

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Different vanadium loadings, viz., 3, 4, 6, and 8 wt %, have been supported on mesoporous carbon-coated monoliths. These catalysts have been tested in the SCR of NO at low temperature. Experiments with different monolith configurations and area velocities have been performed. The conversions of the monoliths placed in series, in parallel, and ground were found to be similar. The latter result indicates that the reaction rate in the monolith is not controlled by diffusion. A one-dimensional model has been applied that predicts reasonably well the results of these experiments. Finally, with this model, we have simulated the effects of varying the carbon coating thickness and cell density on the geometric parameters of the monolith, the pressure drop, the area velocity, and the conversion. As a result, an optimal coating thickness of around 30-40 mum was found.

引用

页码：4073 / 4079

页数：7

共 46 条

[1] Selective catalytic reduction of nitric oxide by ammonia over V2O5/TiO2, V2O5/TiO2/SiO2, and V2O5-WO3/TiO2 catalysts: Effect of vanadia content on the activation energy [J].