Titanium dioxide supported platinum

B. Kraeutler, A.J. Bard, Heterogeneous photocatalytic preparation of supported catalysts. Photodeposition of platinum on titanium dioxide powder and other substrates, /. Am. Chem. Soc. 100 (1978) 4317-4318. 

Baker R.T.K., Kim K.S., Emerson A.B., Dumesic J.A. (1986) A Study of the Platinum-Titanium Dioxide System for the Hydrogenation of Graphite Ramifications of Strong Metal-Support Interactions, J. Phys. Chem. 90(5), 860-866. 

J.A. Horsley. A Molecular Orbital Study of Strong Metal-Support Interaction between Platinum and Titanium Dioxide. J. Am. Chem. Soc. 101 2870 (1979). 

The work presented in this paper is the first part of a project aiming at the development of tailor-made oxidation catalysts for diesel engines fuelled by alcohol fuels, ethanol or methanol. The investigation is focused on the influence of support material on the low temperature oxidation of ethanol and acetaldehyde. The study presents results from an experimental investigation with precious metal catalysts applied on monolithic cordierite substrates. Platinum or palladium were applied onto a support consisting of either aluminum oxide, cerium dioxide, silicon dioxide or titanium dioxide. 

Horsley JA. A molecular orbital study of strong metal-support interaction between platinum and titanium dioxide. J Am Chem Soc. 1979 101(11) 2870. 

As anode material, smooth platinum, as foil or net, is most widely used. In nonaqueous solvents, additionally, platinized titanium, gold, hard graphite and ruthenium dioxide on titanium have been employed. To keep the amount of the costly platinum low, the foils have been glued to a graphite support. With vitreous or baked carbon in protic solvents (methanol, ethanol, water) dimer yields nearly comparable to those at platinum have been obtained. ... 

Preparation. These oxides are usually produced by firing metallic precursors (e.g., nitrates, oxalates) in a moderately oxidizing atmosphere (e.g., steam, or argon-carbon dioxide mixture) at moderate temperatures (700 to 900°C). For reinforcing a brittle ceramic, these oxides can be used supported on a stiff base metal such as titanium. Sometimes, such as for PbOj anodes, an thin intermediate layer of platinum is deposited between the base metal and the magnetite to enhance the service life and delay the undermining process. 

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