期刊
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
卷 27, 期 5, 页码 1153-1158出版社
A V S AMER INST PHYSICS
DOI: 10.1116/1.3179160
关键词
catalysts; high-pressure effects; metal clusters; photoelectron spectra; platinum; scanning tunnelling microscopy; sputter deposition; titanium compounds
A new experimental setup to study catalytic and electronic properties of size-selected clusters on metal oxide substrates from the viewpoint of cluster-support interaction and to formulate a method for the development of heterogeneous catalysts such as automotive exhaust catalysts has been developed. The apparatus consists of a size-selected cluster source, a photoemission spectrometer, a scanning tunneling microscope (STM), and a high-pressure reaction cell. The high-pressure reaction cell measurements provided information on catalytic properties in conditions close to practical use. The authors investigated size-selected platinum clusters deposited on a TiO2(110) surface using a reaction cell and STM. Catalytic activity measurements showed that the catalytic activities have a cluster-size dependency.
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