Effect of the preparation method on Au/Ce-Ti-O catalysts activity for VOCs oxidation

被引：51

作者：

Lamallem, M. ^{[1
]}

El Ayadi, H. ^{[1
]}

Gennequin, C. ^{[1
]}

Cousin, R. ^{[1
]}

Siffert, S. ^{[1
]}

Aissi, F. ^{[1
]}

Aboukais, A. ^{[1
]}

机构：

[1] Univ Littoral Cote dOpale, Lab Catalyse & Environnement, EA 2598, F-59140 Dunkerque, France

来源：

CATALYSIS TODAY | 2008年 / 137卷 / 2-4期

关键词：

ceria; Titania; gold; TPR; XRD; DR/UV-vis; propene oxidation;

D O I：

10.1016/j.cattod.2007.12.141

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Studies concerning the preparation of gold phases dispersed on binary Ce-Ti oxide (Ce0.3Ti0.7O2) were performed in order to elaborate catalysts for total oxidation of VOCs. Solids containing gold, cerium and titanium were synthesized by impregnation and deposition precipitation (DP) method using NaOH, Na2CO3 or Urea as precipitant agent. These catalysts have been characterized by means of total surface area (BET), X-ray diffraction (XRD), diffuse reflectance ultra-violet-visible spectroscopy (DRIUV-vis) and temperature programmed reduction (TPR) and their reactivity towards the oxidation of propene was studied. Thus, it was revealed that the gold-based material prepared by DP method using urea as precipitant agent was the most efficient catalyst towards the total oxidation of propene. Based on the characterisation data, it has been shown that the preparation method has an effect on the catalytic activity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：367 / 372

页数：6

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