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Crystallinity of CrOx/TiO2 Catalysts and Their Activity in TCE Oxidation
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 Title & Authors
Crystallinity of CrOx/TiO2 Catalysts and Their Activity in TCE Oxidation
Kim, Moon-Hyeon; Lee, Hyo-Sang;
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 Abstract
Titania-supported chromium oxides with different loadings have been embarked in catalytic oxidation of trichloroethylene (TCE) to inquire association of the formation of crystalline with catalytic performances. A better activity in the oxidative TCE decomposition at chosen temperatures was represented when chromium oxides () had been dispersed on pure anatase-type (DT51D) rather than on phase-mixed and sulfur-contained ones such as P25 and DT51. The extent of TCE oxidation at temperatures below was a strong function of content in /DT51D , and a noticeable point was that the catalyst has two optimal loadings in which the lowest and values were measured for the TCE oxidation. This behavior in the activity with respect to amounts could be associated with the formation of crystalline on the support surface, that is less active for the oxidation reaction, and an easier mobility of the surface oxygen existing in noncrystalline species with higher oxidation states, such as and .
 Keywords
Trichloroethylene;Catalytic oxidation;Supported chromium oxides;Titania;Crystalline chromium oxides;
 Language
Korean
 Cited by
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