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http://dx.doi.org/10.14478/ace.2017.1095

Influence of Active Metal Dispersion over Pt/TiO2 Catalyst on NH3-SCO Reaction Activity  

Shin, Jung Hun (Department of Environmental Energy Engineering, Graduate school of Kyonggi University)
Kwon, Dong Wook (Materials Architecturing Research Center, Korea Institute of Science and Technology)
Kim, Geo Jong (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.29, no.1, 2018 , pp. 22-27 More about this Journal
Abstract
In this study, the effect of physical properties of $Pt/TiO_2$ on $NH_3$-selective catalytic oxidation (SCO) reaction at $200{\sim}350^{\circ}C$ was investigated. CO-chemisoption and BET analysis were carried out to verify physical properties of $Pt/TiO_2$. By characterizing physical properties of $Pt/TiO_2$ with respect to the Pt loading, the metal dispersion degree decreased as a function of the Pt loading amount. Also, the catalyst having a higher metal dispersion showed an excellent conversion efficiency of $NH_3$ to $N_2$. Since the specific surface area of the support affects the metal dispersion, $Pt/TiO_2$ catalysts were prepared using $TiO_2$ with different physical properties. As a result, it was confirmed that the catalyst having a wide specific surface area exhibited a excellent conversion of $NH_3$ to $N_2$.
Keywords
$NH_3$; $PM_{2.5}$; catalyst; selective catalytic oxidation; Pt;
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