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http://dx.doi.org/10.14478/ace.2021.1064

The Study on the Effect of Phosphorous Poisoning of V/W/TiO2 Catalyst According to the Addition of Sb in NH3-SCR  

Jung, Min Gie (Department of Environmental Energy Engineering, Graduate school of Kyonggi University)
Shin, Jung Hun (Department of Environmental Energy Engineering, Graduate school of Kyonggi University)
Lee, Yeon Jin (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.32, no.5, 2021 , pp. 516-523 More about this Journal
Abstract
A study using selective catalytic reduction (SCR) was conducted in conjunction with ammonia as a reducing agent for controlling nitrogen oxides, a typical secondary inducer of fine dust in the atmosphere. For NH3-SCR experiments, a commercial catalyst of V/W/TiO2 only and also V/W-Sb/TiO2 catalyst with Sb were used, and phosphorous durability was confirmed. As a result of NH3-SCR experiments, it was confirmed that the addition of Sb to V/W/TiO2 had durability against phosphorous. In addition, the physical and chemical properties were comparatively analyzed through BET, XPS, H2-TPR, NH3-TPD, and FT-IR analysis. From the anaylsis results, when Sb was added to V/W/TiO2 catalyst, P was also added resulting in the formation of SbPO4 and the generation of VOPO4 was suppressed. The phosphorous durability was confirmed by maintaining the redox characteristics of the catalyst before P was added.
Keywords
$NH_3$-SCR; $NO_x$; Antimony; Catalyst; $VOPO_4$; $SbPO_4$;
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