Gas-phase catalysis by micelle derived Au nanoparticles on oxide supports

被引：55

作者：

Chou, J ^{[1
]}

Franklin, NR ^{[1
]}

Baeck, SH ^{[1
]}

Jaramillo, TF ^{[1
]}

McFarland, EW ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA

来源：

CATALYSIS LETTERS | 2004年 / 95卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

nanoparticles; catalysis; CO oxidation; propylene hydrogenation;

D O I：

10.1023/B:CATL.0000027282.20003.08

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：

The reactivity of gold clusters (8-22 nm diameter) supported on different metal oxides (titanium dioxide (TiO2), zinc oxide (ZnO), zirconium oxide (ZrO2), and silicon dioxide (SiO2)) was investigated in a continuous flow reactor. Clusters were encapsulated within polymer in toluene solution, impregnated onto the bulk supports, and reduced by calcination at 300 degreesC. Support dependent sintering (TiO2 > ZrO2 > ZnO) was observed following heating in air at 300 degreesC. For both CO oxidation and propylene hydrogenation, Au nanoclusters on TiO2 exhibit the highest activity compared to other supports.

引用

页码：107 / 111

页数：5

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