Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 29 July 2005:
Vol. 309. no. 5735, pp. 713 - 714
DOI: 10.1126/science.1113955
Prev | Table of Contents | Next

Perspectives

CHEMISTRY:
Oxygen Vacancies and Catalysis on Ceria Surfaces

Charles T. Campbell and Charles H. F. Peden

Oxygen vacancies on cerium oxide surfaces play a crucial role in catalysts for automotive exhaust treatment and the hydrogen economy. In their Perspective, Campbell and Peden describe new work (Esch et al.) that uses scanning tunneling microscopy combined with density functional theory to reveal the geometric and electronic structure of these oxygen vacancies. Their structure suggests a mechanism for the rather surprising zirconia promotion of ceria catalysts.

The authors are in the Chemistry Department, University of Washington, Seattle, WA 98195, USA, and the Institute for Interfacial Catalysis, Pacific Northwest National Laboratory, Richland, WA 99352, USA. E-mail: campbell{at}chem.washington.edu

Read the Full Text

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)