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http://dx.doi.org/10.14478/ace.2011.22.6.605

A Study on the Oxygen Behavior Characterization of V2O5/TiO2 Catalysts by Ball Milling  

Kwon, Dong Wook (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Park, Kwang Hee (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Lee, Sang Moon (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Jang, Du Hun (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Hong, Sung Chang (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.22, no.6, 2011 , pp. 605-609 More about this Journal
Abstract
We study on the oxygen behavior of $V_2O_5/TiO_2$ catalysts in the $NH_3$-selective catalytic reduction (SCR) prepared by the ball milling processing. There are not any changes in crystal structure and surface area of the $TiO_2$ catalyst by ball milling, but the maximal reduction temperature decreased in $H_2$-temperature programmed reduction (TPR) analysis. Experimental observations with various concentrations of oxygen indicate that all catalysts showed a very low NOx conversion rate in the absence of oxygen and the reactivity of ball milled catalyst higher depending on the oxygen. It is occurred because the degree of participation of atmospheric oxygen and lattice oxygen is great than that of the not-milled catalyst.
Keywords
selective catalytic reduction; catalyst; ball milling; NOx removal;
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