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http://dx.doi.org/10.14478/ace.2020.1011

The Effect of Calcination Temperature of RuTi Catalysts on the Reaction Activity of NH3-SCO  

Shin, Jung Hun (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.31, no.2, 2020 , pp. 200-207 More about this Journal
Abstract
In this study, the effect of calcination temperature on the production of RuTi catalyst in NH3-SCO (selective catalytic oxidation) was investigated. The RuTi catalyst was prepared using the wet impregnation method, and calcined at 400~600 ℃ for 4 h in air condition. The catalysts were named RuTi x00 where x00 means the calcination temperature. According to XRD (X-Ray diffraction), TEM (transmission electron microscope), H2-TPR (H2-temperature programmed reduction) analyses, RuTi x00 catalysts displayed that the dispersion of active metal decreased via increasing the calcination temperature. The catalysts with low dispersion showed a decrease in the surface adsorption oxygen species (Oβ) and NH3 adsorption amount via XPS, and NH3-TPD analyses. Therefore, the RuTi 400 catalyst was well dispersed in the active metal on TiO2 surface, and also, the NH3 removal efficiency was excellent.
Keywords
$NH_3$; $TiO_2$; Catalyst; SCO; Ru;
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