Yasuhiro Iwasawa

Department of Chemistry, Graduate School of Science, The University of Tokyo Kongo, Bunkyo-ku, Tokyo 113, Japan [Pg.55]

This paper reviews our recent work dealing with designed active structures at oxide surfaces and their spectroscopic characterizations in an atomic or molecular scale. The paper also provides the information on the key issues in catalytic research such as behavior of adsorbed active species during catalysis which are well characterized by recent in-situ spectroscopy and also by traditional spectroscopy. The paper also presents a concept of surface design relevant to supported oxide catalysis, which world allow us to move toward the ulitmate goals of more rational catalyst design. [Pg.55]

Key Words Designed structures at oxide surfaces. Spectroscopic characterization. Behavior of atoms and molecules at surfaces, X-ray absorption fine structure (XAFS), Scanning tunneling microscopy (STM) [Pg.55]

The key properties of oxide surface are the chemical bonding feature, coordination environment, oxidation state and acidic or redox properties of surface cations, and the basicity of surface anions. The longer term challenge to oxide surface chemistry is to address important issues in selectivity in catalytic oxidation and acid-base reactions, in particular the principle of tuning of metal reactivity by oxide ligands. In the development of new catalysts, new chemical concepts regarding structure or composition are conceived. The requirements [Pg.55]

1 Preparation of designed active strnctnres at oxide surfaces [Pg.56]

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