Atomically dispersed single site and site-isolated vanadium and titanium catalysts on silica: Selective oxidation studies with hydrocarbons

INOR 865

Craig Barnes, cebarnes@utk.edu, Ming-Yung Lee, and Richard T. Mayes, mayes@ion.chem.utk.edu. Department of Chemistry, University of Tennessee, Knoxville, TN 37996
Silica supported vanadium centers have recently attracted interest as catalysts for a variety of selective oxidation and solid acid chemistry. Although many strategies have been developed for incorporating metal sites onto support surfaces, controlling metal atom dispersion and loading while simultaneously producing single site catalysts remains a challenging goal in catalysis science. In this presentation, a simple strategy for producing single site, site isolated Ti(IV) and vanadium(IV, V) species in a synthetic silicate matrix will be described. The connectivity of these centers to the support and also the local surface structure around the metal may be varied by design. Preliminary results from studies of the selective oxidation of alkanes by titanium and penta- and tetravalent vanadium in silica will be described.
 

Inorganic Catalysts
8:30 AM-11:50 AM, Wednesday, 13 September 2006 Moscone Center -- Room 302, Oral

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006