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Degree

Master of Science, Miami University, Paper Science and Engineering, 2004.

Abstract

The use of nanostructured V₂O₅ / TiO₂ and WO₃ / V₂O₅ / TiO₂ catalysts was investigated for the low temperature oxidation of methanol. A wet incipient method was used to dope WO₃ and V₂O5 on the Ishihara ST-01 TiO₂ support. The V/Ti mass ratios varied from 0 to 0.10 for the V₂O₅ / TiO₂ catalysts, and the W/Ti mass ratios varied from 0 to 0.10 with constant V/Ti mass ratio = 0.02 for the WO₃ / V₂O₅ / TiO₂ catalysts. Characterization of the catalysts using X-ray Diffraction, BET surface area and Raman Spectroscopy showed that the thermal stability of catalysts decreased with increasing V/Ti mass ratio over 0.02 but increased with increasing W/Ti mass ratio. The catalytic activity for methanol oxidation increased with W/Ti mass ratio up to W/Ti = 0.05. The catalyst having 0.05 V/Ti mass ratio and calcined at 400 °C showed the highest catalytic activity.

Subject Headings

Engineering, Environmental

Keywords

Methanol Oxidation; Titanium Dioxide Catalyst; Vanadia Tungsta Catalyst

Advisor

Catherine Almquist

Pages

63p.

Document number: miami1091749370
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=miami1091749370

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