Stability and activity of Au catalysts supported on functionalized oxide supports

Support materials were varied and catalytic performance of the resulting Au catalysts were measured. Four different forms of titania supports were prepared and the monolayer synthesis method was used to functionalize silica with single and double layers of Ti and/or Al. Au catalysts using these supports were studied for CO oxidation catalysis after a sequence of thermal reductive or oxidative treatments. Of the titania supports, the brookite form stabilized Au growth the best. Single layers of Ti on silica led to active catalyst. Imposing a buffer layer of Ti under the Al layer led to activity and stability. This is an abstract of a paper presented at the 229th ACS National Meeting (San Diego, CA 3/13-17/2005).