Browse > Article

Kinetics of Hydrogen Rich Ethanol as Reductant for HC-SCR over $Al_2O_3$ Supported Ag Catalyst  

Lee, Ju-Heon (Engineering Dept., Kocat)
Park, Jeong-Whan (Dept. of Chemical Eng., Soonchunhyang Univ.)
Kim, Seong-Soo (Waste Energy Research 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.21, no.6, 2010 , pp. 519-525 More about this Journal
Abstract
Ethanol was used as reductant to remove $NO_x$ over Ag/$Al_2O_3$ catalyst via SCR from stationary emission source. Among the tested hydrocarbon reductants, ethanol showed highest de-$NO_x$ performance over the Ag/$Al_2O_3$ catalyst. De-$NO_x$ efficiency of about 83% was obtained in the condition of GHSV 20,000 $hr^{-1}$, $NO_x$ 200 ppm, CO 200 ppm, $O_2$ 13%, $H_2O$ 5% and mole ratio of ethanol/$NO_x$ = 2 between temperature of $300^{\circ}C$ and $400^{\circ}C$. While $SO_2$ presence in the $NO_x$ exhaust suppressed the catalytic activity, catalyst with acid (0.7% $H_2SO_4$) treatment of catalyst showed higher catalytic activity, where In-Situ DRIFT showed S presence over catalyst surface was increased after acid treatment of catalyst. From in-situ DRIFT and SCR results, it was concluded that sulfur presence over the surface of Ag/$Al_2O_3$ catalyst was the dominant factor to control the de-$NO_x$ reaction yield via HC-SCR from the exhausted gas including $SO_2$.
Keywords
Ethanol; Reduction; Ag/$Al_2O_3$; $NO_x$ removal;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y. Yu, H. He, Q. Feng, H. Gao, and X. Yang, "Mechanism of the selective catalytic reduction of $NO_{X}$ by $C_{2}H_{5}OH$ over $Ag/Al_{2}O_{3}$", Appl. Catal. B: Env., Vol. 49, 2004, pp. 159-171.   DOI   ScienceOn
2 K. Masuda, K. Tsujimura, K. Shinoda and T. Kato, "Silver Promoted Catalyst for Removal of Nitrogen-Oxide from Emission of Diesel-Engines", Appl. Catal. B: Env., Vol. 8, 1996. pp. 33-40.   DOI   ScienceOn
3 C. J. Loughran and D. E. Resasco, "Conversion of Nitric-Oxide and Methane over Pd/ZSM-5 Catalysts in the Absence of Oxygen", Appl, Catal. B: Env., Vol. 5, 1995. pp. 351-365.   DOI
4 S. Xie, J. Wang and H. He, "Poison Effect of Sulphate on the Selective Catalytic Reduction", J. Mol. Catal. Chem., Vol. 266, 2007, pp. 166-172.   DOI   ScienceOn
5 X. Zhang, H. He, C. Zhang, and Y. Yu, "A comparative study of $Ag/Al_{2}O_{3}$ and $Cu/Al_{2}O_{3}$ catalysts for the selective catalytic reduction of NO by $C_{3}H_{6}$", Catal. Today, Vol. 90, 2004, pp. 191-197.   DOI
6 Q. Wu, H. He, and Y. Yu, "In-Situ DRIFT study of the selective reduction of $NO_{X}$ with alcohols over $Ag/Al_{2}O_{3}$", Appl. Catal. B: Env., Vol. 61, I. 1-2, 2005, pp. 107-113.   DOI
7 Q. Wu, H. He, and Y. Yu, "In situ DRIFT study of the selective reduction of $NO_{X}$ with alcohols over $Ag/Al_{2}O_{3}$ catalyst: role of surface species", Appl. Catalysis B: Env. Vol. 61, 2005, pp. 107-113.   DOI
8 S. Xie, J. Wang, and H. He, "Poisoning effect of sulphate on the selective catalytic reduction of $NO_{X}$ by $C_{3}H_{6}$ over $Ag-Pd/Al_{2}O_{3}$", Molecular Catalysis A: Chem., Vol. 266, 2007, pp. 166-172.   DOI   ScienceOn
9 H. H. Chen, S. C. Shen, X. Chen, and S. Kawi, "SCR of NO over Co/zeloite: Efects of synthesis condition, Co precursor, Co loading method and reductant", Appl. Catal. B: Env., Vol. 50, I. 1, 2004, pp. 37-47.   DOI   ScienceOn
10 Q. Feng, and H. He, "Disparate effect of $SO_{2}$ on the selective catalytic reduction of NO by $C_{2}H_{5}OH$ and IPA over $Ag/Al_{2}O_{3}$", Catalyst Communications, Vol. 7, 2006, pp. 657-661.   DOI   ScienceOn
11 C. Zhang, H. He, S. Shuai, and K. Wang, "Catalytic performane of $Ag/Al_{2}O_{3}-C_{2}H_{5}OH -Cu/Al_{2}O_{3}$ system for the removal of $NO_{X}$ from diesel engine exhaust", Environmental Pollution, Vol. 147, 2007, pp. 415-421.   DOI   ScienceOn
12 J. G. Kim, M. J. Lee, H. M. Lee, J. Y. Jeon, S. S. Kim and S. J. Yoo, "Study of efficiency of hydrogen rich biodiesel as reductant for HCSCR over $Al_{2}O_{3}$ supported Ag Catalyst", Trans. Korean Hydrogen. Energy Soc., Vol. 20, No. 3, 2009, pp. 232-237.   과학기술학회마을
13 Y. Yu, H. He, Q. Feng, H. Gao, and X. Yang, "Mechanism of the selective catalytic reduction of $NO_{X}$ by $C_{2}H_{5}OH$ over $Ag/Al_{2}O_{3}$", Appl. Catal. B: Env. Vol. 49, 2004, pp. 159-171.   DOI   ScienceOn