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http://dx.doi.org/10.5762/KAIS.2013.14.12.6575

Strength and conversion characteristics of DeNOx catalysts with the addition of dispersion agent  

Lee, Hyun Hee (Department of Environmental Energy Systems Engineering, Kyonggi University)
Park, Kwang Hee (R&D Center, Alantum Corp.)
Cha, Wang Seog (Department of Environmental Engineering, Kunsan National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.12, 2013 , pp. 6575-6580 More about this Journal
Abstract
Various modified SCR catalysts were prepared and tested to improve the strength of catalysts for use under severe conditions. The SCR catalysts were modified with a binder and dispersion agent, and tested at the fixed bed reactor. FT-IR and $H_2$-TPR were used to analyze the degree of hydrogen use and ammonia adsorption by the modified catalysts. In the case of the SCR catalysts coated with 2.3g of the binder, 4.7g of ethanol, and 0.1g of dispersion agent, the strength of catalyst was increased by approximately 12%. On the other hand, despite the enhancement of strength, the activities of the SCR catalysts were decreased by 2-10%. When the mixed solution composed of binder, dispersion agent and $SiO_2$ solution was precipitated on the catalyst, the $NO_x$ conversion of the catalyst was decreased slightly. The Bronsted acid site and Lewis acid site worked as the activators for the SCR reaction, and were decreased by $SiO_2$.
Keywords
binder; dispersion agent; $NO_x$ conversion; $SiO_2$; strength of catalyst;
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Times Cited By KSCI : 2  (Citation Analysis)
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