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http://dx.doi.org/10.5322/JES.2006.15.3.221

Oxidative Decomposition of TCE over TiO2-Supported Metal Oxide Catalysts  

Yang Won-Ho (Department of Environmental Engineering, Daegu University)
Kim Moon-Hyeon (Department of Occupational Health, Catholic University of Daegu)
Publication Information
Journal of Environmental Science International / v.15, no.3, 2006 , pp. 221-227 More about this Journal
Abstract
Oxidative TCE decomposition over $TiO_2$-supported single and complex metal oxide catalysts has been conducted using a continuous flow type fixed-bed reactor system. Different types of commercial $TiO_2$ were used for obtaining the supported catalysts via an incipient wetness technique. Among a variety of titanias and metal oxides used, a DT51D $TiO_2\;and\;CrO_x$ would be the respective promising support and active ingredient for the oxidative TCE decomposition. The $TiO_2-based\;CrO_x$ catalyst gave a significant dependence of the catalytic activity in TCE oxidation reaction on the metal loadings. The use of high $CrO_x$ contents for preparing $CrO_x/TiO_2$ catalysts might produce $Cr_2O_3$ crystallites on the surface of $TiO_2$, thereby decreasing catalytic performance in the oxidative decomposition at low reaction temperatures. Supported $CrO_x$-based bimetallic oxide systems offered a very useful approach to lower the $CrO_x$ amounts without any loss in their catalytic activity for the catalytic TCE oxidation and to minimize the formation of Cl-containing organic products in the course of the catalytic reaction.
Keywords
Catalytic oxidation; Titania; Metal oxides; Trichloroethylene; Chromium oxides; By-products; Complex metal oxides;
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Times Cited By KSCI : 1  (Citation Analysis)
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