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http://dx.doi.org/10.7316/khnes.2011.22.5.714

Effect of SOx on HC-SCR Kinetics over Ag/Al2O3 Catalyst  

Lee, Ju-Heon (Engineering Dept., Kocat)
Park, Jeong-Whan (Dept. of Chemical Eng., Soonchunhyang Univ.)
Kim, Seong-Soo (Wastes Energy Center, Korea Institute of Energy Research)
Yoo, Seung-Joon (Dept. of Env. and Chemical Eng., Seonam Univ.)
Kim, Jin-Gul (Dept. of Chemical Eng., Soonchunhyang Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.5, 2011 , pp. 714-720 More about this Journal
Abstract
Ethanol was used as reducing agent to remove $NO_x$ exhaust from the stationary source. Pre-treatment with sulfuric acid over $Ag/Al_2O_3$ catalyst was dedicated to overcome the $SO_2$ poisoning effect. The $NO_x$ reduction experiment was performed under the simulated condition of power plant The increased surface area with higher CPSI devoted to increase de-$NO_x$ yield. De-$NO_x$ yield of the $NO_x$ exhaust containing 20 ppm of $SO_2$ increased after acid treatment with 0.7% $H_2SO_4$ over 4.0% $Ag/Al_2O_3$, where the increased dispersion of Ag found from the results of XRD and XPS was the dominant factor for the increased de-$NO_x$ yield. However, the reason for the decreased de-$NO_x$ yield with the acid treatment of higher concentration (1.0% and 2.0%) of $H_2SO_4$ was found to be due to the formation of $Ag_2SO_4$ crystallites found from XRD result. Acid-treated $Ag/Al_2O_3$ catalyst showed maximum de-$NO_x$ yield at higher temperature than non-treated $Ag/Al_2O_3$ catalyst did.
Keywords
$Ag/Al_2O_3$; ethanol; Reduction; Acid-treated; $NO_x$ removal;
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Times Cited By KSCI : 2  (Citation Analysis)
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