Gold nano-particles stabilized in mesoporous MCM-48 as active CO-oxidation catalyst

被引：50

作者：

Bandyopadhyay, M

Korsak, O

van den Berg, MWE

Grünert, W

Birkner, A

Li, W

Schüth, F

Gies, H

机构：

[1] Ruhr Univ Bochum, Fak Chem, Lehrstuhl Kristallog, Inst Geol Mineral & Geophys, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Lehrstuhl Tech Chem, D-44780 Bochum, Germany

[3] Ruhr Univ Bochum, Lehrstuhl Phys Chem, D-44780 Bochum, Germany

[4] MPI Kohlenforsch, D-45470 Mulheim, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2006年 / 89卷 / 1-3期

关键词：

Au/TiO2-MCM-48; Au/TiO2; CO oxidation; Au XANES; Au EXAFS;

D O I：

10.1016/j.micromeso.2005.09.029

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Gold in nano-crystal size is known as highly active CO-oxidation catalyst. Using simple deposition techniques gold has been deposited as similar to 3 nm particles inside the channels of mesoporous silica-TiO2-MCM-48. In the presence of gold nano-particles the catalyst converts CO to CO2 at 50% level at -20 degrees C. The composite is stable against sintering up to at least 200 degrees C. XANES and EXAFS confirm the coexistence of elementary and ionic gold during the catalytic activity. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：158 / 163

页数：6

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