Effect of support parameters on activity of gold catalysts: Studies of ZrO2, TiO2 and mixture

被引：27

作者：

Azizi, Yassine ^{[1
]}

Pitchon, Veronique ^{[1
]}

Petit, Corinne ^{[1
]}

机构：

[1] CNRS, ECPM, UMR 7515, Lab Mat Surfaces & Procedes Catalyse, F-67087 Strasbourg, France

来源：

APPLIED CATALYSIS A-GENERAL | 2010年 / 385卷 / 1-2期

关键词：

Gold; DAE; Particles size; TiO2; ZrO2; TiZrO4; RAY PHOTOELECTRON-SPECTROSCOPY; AU/ZRO2; CATALYSTS; CO OXIDATION; TIO2-ZRO2; TITANIA; OXIDE; DEACTIVATION; ZIRCONIA; NANOPARTICLES; AU/TIO2;

D O I：

10.1016/j.apcata.2010.07.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Supports based on TiO2, ZrO2 and stoichiometric mixtures such as TiZrO4 were prepared by the co-precipitation method. Samples were calcined at different temperatures to study their capacity to disperse gold nanoparticles. The method of deposition employed was direct anionic exchange (DAE). The supports alone and then the gold supported catalysts were characterized in terms of their structural, textural and surface properties, using different techniques: BET, XRD, TEM, and XPS. The oxidation of CO was chosen as the probe reaction. The results revealed that the preponderant parameters influencing the grafting of gold depend on the number of surface hydroxyls and their chemical nature. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：170 / 177

页数：8

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