Hydrogen Dissociation by Gold Clusters

The rate of H2–D2 exchange increases in proportion to the inverse square of the mean diameter of gold particles supported on TiO2 (see picture), which indicates that hydrogen dissociation takes place on the perimeter interfaces between the gold and TiO2 and that the catalytic activity for H2 dissociation is correlated neither to a change in the fraction of edge or corner sites nor to a change in the electronic nature induced by the quantum size effect. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.