Low temperature CO oxidation over unsupported nanoporous gold

J Am Chem Soc. 2007 Jan 10;129(1):42-3. doi: 10.1021/ja0675503.

Abstract

Supported Au nanoclusters are well-known for their unusual properties in catalysis. We describe here that nanostructured porous Au made via dealloying represents a new class of unsupported catalysts with extraordinary activities in important reactions such as CO oxidation. Although nanoporous Au may contain some oxides on the surface, our results demonstrate that it is metallic Au that plays the main role in this catalytic reaction. Furthermore, this material has good low-temperature catalytic stability and is extremely CO tolerant.