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

共 32 条

[11] NOVEL GOLD CATALYSTS FOR THE OXIDATION OF CARBON-MONOXIDE AT A TEMPERATURE FAR BELOW 0-DEGREES-C [J].

HARUTA, M ;

KOBAYASHI, T ;

SANO, H ;

YAMADA, N .

CHEMISTRY LETTERS, 1987, (02) :405-408

[12] Size- and support-dependency in the catalysis of gold [J].

Haruta, M .

CATALYSIS TODAY, 1997, 36 (01) :153-166

[13] GOLD CATALYSTS PREPARED BY COPRECIPITATION FOR LOW-TEMPERATURE OXIDATION OF HYDROGEN AND OF CARBON-MONOXIDE [J].

HARUTA, M ;

YAMADA, N ;

KOBAYASHI, T ;

IIJIMA, S .

JOURNAL OF CATALYSIS, 1989, 115 (02) :301-309

[14] Influence of calcination temperature on the structure and catalytic performance of Au/iron oxide catalysts for water-gas shift reaction [J].

Hua, JM ;

Wei, KM ;

Zheng, Q ;

Lin, XY .

APPLIED CATALYSIS A-GENERAL, 2004, 259 (01) :121-130

[15]

KLEMENTIEV KV, VIPER WINDOWS VISUAL

[16] THIN-FILMS OF SUPPORTED GOLD CATALYSTS FOR CO DETECTION [J].

KOBAYASHI, T ;

HARUTA, M ;

TSUBOTA, S ;

SANO, H ;

DELMON, B .

SENSORS AND ACTUATORS B-CHEMICAL, 1990, 1 (1-6) :222-225

[17] Nanoparticles of 3d transition metal oxides in mesoporous MCM-48 silica host structures:: Synthesis and characterization [J].

Köhn, R ;

Fröba, M .

CATALYSIS TODAY, 2001, 68 (1-3) :227-236

[18] ORDERED MESOPOROUS MOLECULAR-SIEVES SYNTHESIZED BY A LIQUID-CRYSTAL TEMPLATE MECHANISM [J].

KRESGE, CT ;

LEONOWICZ, ME ;

ROTH, WJ ;

VARTULI, JC ;

BECK, JS .

NATURE, 1992, 359 (6397) :710-712

[19] Influence of the sorbate type on the XRD peak intensities of loaded MCM-41 [J].

Marler, B ;

Oberhagemann, U ;

Vortmann, S ;

Gies, H .

MICROPOROUS MATERIALS, 1996, 6 (5-6) :375-383

[20] Pseudotetrahedral O3/2V=0 centers immobilized on the walls of a mesoporous, cubic MCM-48 support: Preparation, characterization, and reactivity toward water as investigated by V-51 NMR and UV-vis spectroscopies [J].

Morey, M ;

Davidson, A ;

Eckert, H ;

Stucky, G .

CHEMISTRY OF MATERIALS, 1996, 8 (02) :486-492

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