Thesis Title

Heterogeneous Photooxidation of Trichloroethene on Titanium Oxides Encapsulated in Zeolites L and Y

Date of Graduation

Summer 2000

Degree

Master of Science in Chemistry

Department

Chemistery

Committee Chair

Michelle Driessen

Subject Categories

Chemistry

Abstract

The room temperature heterogeneous photooxidation of Trichloroethene (TCE) on titanium particles (TiOx) encapsulated in zeolite pores was studied using Transmission FT-IR. The decomposition was performed by utlizing two distinctly different pore structures. These were the interconnected supercages of zeolite Y and the parallel channeled system of zeolite L. The observed products and intermediates showed similarities to products observed on bulk TiO₂. However, product distributions were unique to both encapsulated zeolite samples and yielded smaller amounts of chlorinated by-products. Additional analysis using water vapor and reduced oxygen pressure was conducted and the products and intermediates observed. From these analyses a TCE decomposition rate comparison of all samples was prepared and discussed. It was found that TiOx/Y has the faster rate of TCE decomposition than the other catalysts used including bulk TiO₂.

Copyright

© Gabriel Elmore Craig

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Dissertation/Thesis

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