Modeling Heterogeneous Catalysts: Metal Clusters on Planar Oxide Supports

Author

Charles C. Chusuei, Missouri University of Science and TechnologyFollow
Xiaofeng Lai
Kai Luo
D. W. Goodman

Abstract

The morphology, electronic structure and catalytic properties of these Au and Ag clusters were studied using low-energy ion scattering spectroscopy (LEIS), TPD, XPS, and scanning tunneling microscopy and spectroscopy with emphasis on the unique properties of clusters < 5 nm in size. Gold supported on TiO2 was active for various reactions including low-temperature CO oxidation and the selective oxidation of propylene. A correlation was observed between Au clusters size and catalytic activity for CO oxidation on Au/TiO2 (110)-(1 × 1). The activity of the Au/TiO2 catalyst exhibited a maximum 1.90 turnover frequency at an average Au cluster diameter of ∼ 3.5 nm, decreasing with larger diameter.

Recommended Citation

C. C. Chusuei et al., "Modeling Heterogeneous Catalysts: Metal Clusters on Planar Oxide Supports," Topics in Catalysis, Springer Verlag, Jan 2001.

The definitive version is available at https://doi.org/10.1023/A:1009059100646

Department(s)

Chemistry

International Standard Serial Number (ISSN)

1022-5528

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2001 Springer Verlag, All rights reserved.

Publication Date

01 Jan 2001