Abstract
Commercial SCR catalysts used in a coal-fired power plant were regenerated by H2SO4 solution. The characterization study of the catalysts was carried out by using various analytical techniques. Major deactivating elements for the SCR catalyst were determined and the optimal condition for regeneration of the catalyst was investigated. The catalyst regenerated with 0.5 wt% H2SO4 solution showed a high catalytic activity due to an increase in the polymeric vanadates and acid sites by surface sulfates. A higher H2SO4 concentration than 2.5 wt% in the washing solution leads to a loss of active components out of the catalyst by dissolution and a dramatic decrease in the surface area.
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I. Nova, L. Dall’Acqua, L. Lietti, E. Giamello and P. Forzatti, Appl. Catal. B: Environ., 35, 31 (2001).
F. Tang, B. Xu, H. Shi, J. Qiu and Y. Fan, Appl. Catal. B: Environ., 94, 71 (2010).
P.W. Seo, S. S. Kim and S. C. Hong, Korean J. Chem. Eng., 27, 1220 (2010).
S. M. Jeong and S. D. Kim, Ind. Eng. Chem. Res., 39, 1911 (2000).
J. R. Strege, C. J. Zygarlicke, B.C. Folkedahl and D. P. McCollor, Fuel, 87, 1341 (2008).
R. Khodayari and C. U. I. Odenbrand, Appl. Catal. B: Environ., 33, 277 (2001).
I.Y. Lee and J. B. Lee, J. Korean Soc. Waste Manage., 26, 277 (2009).
O. Kröcher and M. Elsener, Appl. Catal. B: Environ., 75, 215 (2008).
D. Nicosia, I. Chzekaj and O. Kröcher, Appl. Catal. B: Environ., 77, 228 (2008).
Y. Zheng, A.D. Jensen and J. E. Johnson, Appl. Catal. B: Environ., 60, 253 (2005).
H. J. Hong, S.W. Ham, M. H. Kim, S.M. Lee and J.B. Lee, Korean J. Chem. Eng., 27, 1117 (2010).
L. Lisi, G. Lasorella, S. Malloggi and G. Russo, Appl. Catal. B: Environ., 50, 251 (2004).
S. A. Benson, J. D. Laumb, C. R. Crocker and J. H. Pavlish, Fuel Process. Technol., 86, 577 (2005).
Y. Zheng, A. D. Jensen and J. E. Johnson, Ind. Eng. Chem. Res., 43, 941 (2004).
C. L. Senior, D. O. Lignell, A. F. Sarofim and A. Mehta, Combust. Flame, 147, 209 (2006).
S. Pritchard and C. DiFrancesco, 2006 Megasymposium, Baltimore, MD (2006).
X. Guo, C. Bartholomew, W. Hecker and L. L. Baxter, Appl. Catal. B: Environ., 92, 30 (2009).
S. T. Choo, Y. G. Lee, I. S. Nam, S.W. Ham and J. B. Lee, Appl. Catal. A: Gen., 200, 177 (2000).
H. K. Park, J. Korean Soc. Environ. Eng., 27, 859 (2005).
J. Arfaoui, L. K. Boudali, A. Ghorbel and G. Delahay, Catal. Today, 142, 234 (2009).
L. Chmielarz, P. Kustrowsk, M. Zbroja, W. Lasocha and R. Dziembaj, Catal. Today, 90, 43 (2004).
S.M. Jung and P. Grange, Catal. Today, 59, 305 (2000).
G. Xie, Z. Liu, Z. Zhu, Q. Lie, J. Ge and Z. Huang, J. Catal., 224, 42 (2004).
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This work was presented at the 8th Korea-China Workshop on Clean Energy Technology held at Daejeon, Nov. 24–27, 2010.
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Lee, J.B., Kim, S.K., Kim, D.W. et al. Effect of H2SO4 concentration in washing solution on regeneration of commercial selective catalytic reduction catalyst. Korean J. Chem. Eng. 29, 270–276 (2012). https://doi.org/10.1007/s11814-011-0156-8
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DOI: https://doi.org/10.1007/s11814-011-0156-8