Effect of LaCoO3 perovskite deposition on ceria-based supports on total oxidation of VOC

被引：29

作者：

Alifanti, M

Florea, M

Cortes-Corberan, V

Endruschat, U

Delmon, B

Pârvulescu, VI

机构：

[1] Univ Bucharest, Dept Chem Technol & Catalysis, Bucharest 030016, Romania

[2] CSIC ICP, Madrid 28049, Spain

[3] WC Heraeus GmbH & Co KG, Chem Div, D-63450 Hanau, Germany

[4] Catholic Univ Louvain, Unite Catalyse & Chim Mat Divises, B-1348 Louvain, Belgium

来源：

CATALYSIS TODAY | 2006年 / 112卷 / 1-4期

关键词：

supported perovskite; ceria-based supports; catalytic toluene combustion;

D O I：

10.1016/j.cattod.2005.11.017

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Supported LaCoO3 perovskites with 10 wt.% loading were prepared by impregnation of different supports containing ceria with a solution of La and Co nitrates and citric acid. All precursors were calcined at 700 degrees C for 5 h. XRD investigations indicated the perovskite formation via "citrate" precursor only on ceria support. All catalysts were tested for toluene total oxidation in the temperature range 100-600 degrees C. In spite of a large surface area, alumina-supported perovskites showed a lower global activity. It appears then the necessity of the presence of a perovskite phase for good oxidative activity. In terms of reaction rates higher reaction rates per perovskite weight were observed for all supported catalysts when compared to bulk LaCoO3. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：169 / 173

页数：5

共 22 条

[1] Characterization of CeO2-ZrO2 mixed oxides.: Comparison of the citrate and sol-gel preparation methods [J].