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http://dx.doi.org/10.14478/ace.2016.1116

The Selective Catalytic Oxidation of Ammonia: Effect of Physicochemical Properties on Pt/TiO2  

Shin, Jung Hun (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Kim, Dong Ho (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Hong, Sung Chang (Department of Environmental Energy Engineering, Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.28, no.3, 2017 , pp. 279-285 More about this Journal
Abstract
In this study, the study of the selective catalytic oxidation (SCO) for controlling the $NH_3$ at $200{\sim}350^{\circ}C$ range was investigated. Physicochemical properties of the catalysts were determined using XRD and XPS analysis. In the case of catalytic activity according to thermal treatment condition, the reduction catalyst showed better activity than that of using the calcination catalyst. It was confirmed that the valence state of reduction catalyst was mainly $Pt^{2+}$ and $Pt^0$ as analyzed by XPS. Also, when comparing the reaction activities of $Pt/TiO_2$ catalysts according to the reduction temperature, the $NH_3$ conversion of the catalyst reduced at $700^{\circ}C$ showed the most excellent activity. However, the best activity of $NH_3$ conversion to $N_2$ was obtained for the catalyst reduced at $600^{\circ}C$.
Keywords
$NH_3$; $TiO_2$; catalyst; SCO; Pt;
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