Study on Co-Effect of K2SO4 Deposition and Low Concentration SO2 on Performances of V2O5/AC Catalysts for Low Temperature SCR

DOI: 10.4236/aces.2011.14026   PDF   HTML     3,849 Downloads   6,985 Views  


Simulated compounds were prepared by loading K2SO4 onto V2O5/AC catalysts. Study the effect of K2SO4 on V1/AC catalysts in the presence of low concentration SO2. Transient response techniques, TPD was carried out. The results indicated that the DeNO activity of V1/AC catalysts was decreased seriously in the early period of operation, but the deactivation was gradually diminished with SO2 adsorption and then, it was completely eliminated. For the sulphated catalysts (saturated catalysts by sulphate), their SCR activity were free from existence of gaseous SO2. the loss of activity about 10% caused by K2SO4 was found on them. The deactivation of K2SO4 deposited catalysts was due to the decrease of adsorbed and activated NH3, or some acid sites.

Share and Cite:

X. Zhang, B. Shi, X. Wu, Z. Huang, Z. Liu, B. Yang and C. Zhang, "Study on Co-Effect of K2SO4 Deposition and Low Concentration SO2 on Performances of V2O5/AC Catalysts for Low Temperature SCR," Advances in Chemical Engineering and Science, Vol. 1 No. 4, 2011, pp. 176-182. doi: 10.4236/aces.2011.14026.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] M. Richter, A. Trunschke, U. Bentrup, K.Brzezinka, E. Schreier, M. Schneider, M. Pohl and R. Fricke, “ Selective Catalytic Reduction of Nitric Oxide by Ammonia over Egg-Shell MnOx/NaY Composite Catalysts,” Journal of Catalysis, Vol. 206, No. 1, 2002, pp. 98-113. doi:10.1006/jcat.2001.3468
[2] G. Marban, T.Valdes-Solis and A. B. Fuertes, “Mechanism of Low-Temperature Selective Catalytic Reduction of NO with NH3 over Carbon-Supported Mn3O4. Active Phase and Role of Surface NO Species,” Physical Chemistry Chemical Physics, Vol. 6, No. 2, 2004, pp. 453-464. doi:10.1039/b313752j
[3] T. Grzybek, J. Pasel and H. Papp, “Supported Manganese Catalysts for the Selective Catalytic Reduction of Nitrogen Oxides with Ammonia Part II. Catalytic Experiments,” Physical Chemistry Chemical Physics, Vol. 1, No. 2, 1999, pp. 341-348. doi:10.1039/a806913a
[4] T. Valdes-Solis, G. Marban and A. B. Fuertes, “Low- Temperature SCR of NOx with NH3 over Carbon-Ceramic Supported Catalysts,” Applied Catalysis B: Environmental, Vol. 46, No. 2, 2003, pp. 261-271. doi:10.1016/S0926-3373(03)00217-0
[5] Z. Zhu, Z. Liu, H. Niu and S.Liu, “Promoting Effect of SO2 on Activated Carbon-Supported Vanadia Catalyst for NO Reduction by NH3 at Low Temperatures,” Journal of Catalysis, Vol. 187, No.1, 1999, pp. 245-248. doi:10.1006/jcat.1999.2605
[6] Z. Zhu, Z. Liu, H. Niu, T. Hu, T. Liu and Y. Xie, “Mechanism of SO2 Promotion for NO Reduction with NH3 over Activated Carbon-Supported Vanadium Oxide Catalyst,” Journal of Catalysis, Vol. 197, No. 1, 2001, pp. 6-16. doi:10.1006/jcat.2000.3052
[7] T. Valmari, T. Lind and E. I. Kauppinen, “Field Study on Ash Behavior during Circulating Fluidizied-Bed Combustion of Biomass. 2. Ash Deposition and Alkali Vapor Condensation,” Energy & Guels, Vol. 13, No. 2, 1999, pp. 390-395.
[8] L. Zhang and Y. Ninomiya, “Emission of Suspended PM10 from Laboratory-Scale Coal Combustion and Its Correlation with Coal Mineral Properties,” Fuel, Vol. 85, No. 2, 2006, pp. 194-203. doi:10.1016/j.fuel.2005.03.034
[9] L. Zhang, M. Ito, A. Sato and Y. Ninomiya, “Fate of Alkali Elements during Pyrolysis and Combustion of Chinese Coals,” Journal of Chemical Engineering of Japan, Vol. 36, No. 3, 2004, pp. 759-768.
[10] J. P. Chen and R. T. Yang, “Mechanism of Poisoning of the V2O5/TiO2 Catalyst for the Reduction of NO by NH3,” Journal of Catalysis, Vol. 125, No. 2, 1990, pp. 411-420. doi:10.1016/0021-9517(90)90314-A
[11] R. Khodayari, “Selective Catalytic Reduction of NOx: Experimental and Theoretical Studies of Deactivatin,” Licentiate Thesis, University of Lund, Lund, 1998.
[12] H. Kamata, K. Takahashi and C. U. I. Odenbrand, “The Role of K2O in the Selective Reduction of NO with NH3 over a V2O5 (WO3)/TiO2 Commercial Selective Catalytic Reduction Catalyst,” Journal of Molecular Catalysis A: Chemical, Vol. 139, No. 5, 1999, pp. 189-198. doi:10.1016/S1381-1169(98)00177-0
[13] N. Y. Topsoe, H. Topsoe and J. A. Dumesic, “Vanadia/ Titania Catalysts for Selective Catalytic Reduction (SCR) of Nitric-Oxide by Ammonia: I. Combined Temperature-Programmed In-Situ FTIR and On-line Mass-Spectroscopy Studies,” Journal of Catalysis, Vol. 151, No. 1, 1995, pp. 226-240. doi:10.1006/jcat.1995.1024
[14] N. Y. Topspe, J. A. Dumesic and H. Topsoe, “Vanadia-Titania Catalysts for Selective Catalytic Reduction of Nitric-Oxide by Ammonia:ⅡStudies of Active Sites and Formulation of Catalytic Cycles,” Journal of Catalysis, Vol. 151, No. 1, 1995, pp. 241-252. tp://
[15] J. A. Dumesic, N. Y. Topsoe, H. Topsoe, Y. Chen and T. Slabisk, “Kinetics of Selective Catalytic Reduction of Nitric Oxide by Ammonia over Vanadia/Titania,” Journal of Catalysis, Vol. 163, No. 2, 1996, pp. 409-417. doi:10.1006/jcat.1996.0342
[16] P. Davini, “Adsorption of Sulphur Dioxide on Thermally Treated Active Carbon,” Fuel, Vol. 68, No. 2, 1989, pp. 145-148. doi:10.1016/0016-2361(89)90314-1
[17] E. Garcia-Bordeje, J. L. Pinilla, M. J. Lazaro, R. Moliner and J. L. G. Fierro, “Role of Sulphates on the Mechanism of NH3-SCR of NO at Low Temperatures over Presulphated Vanadium Supported on Carbon-Coated Monoliths,” Journal of Catalysis, Vol. 233, No. 1, 2005, pp. 166-175. doi:10.1016/j.jcat.2005.04.032
[18] L. Lietti, G. Ramis, F. Berti, G. P. Toledo, D. Rbba, G. Busca and P. Forzatti, “Chemical, Structural and Mechanistic Aspects on NOx SCR over Commercial and Model Oxide Catalysts,” Catalysis Today, Vol. 42, No. 18, 1998, pp. 101-116. doi:10.1016/S0920-5861(98)00081-9
[19] L. Lietti, I. Nova, S. Camurri, E. Tronconi and P. Forzatti, “Dynamics of the SCR-DeNOx Reaction by the Transient-Response Method,” AIChE Journal, Vol. 43, No.17, 2004, pp. 2559-2570.
[20] E. Tronconi, L. Lietti, P. Forzatti and S. Malloggi, “Experimental and Theoretical Investigation of the Dynamics of the SCR-DeNOx Reaction,” Chemical Engineering Science, Vol. 51, No. 11, 1996, pp. 2965-2970. doi:10.1016/0009-2509(96)00182-0
[21] M. Amiridis, I. Wachs, G. Deo, J. Jehng and D. Kim, “Reactivity of V2O5Catalysts for the Selective Catalytic Reduction of NO by NH3: Influence of Vanadia Loading, H2O, and SO2,” Journal of Catalysis, Vol. 161, No. 1, 1996, pp. 247-253. doi:10.1006/jcat.1996.0182
[22] J. Dunn, P. Koppula, H. Stenger and I. Wachs, “Influence of Pt Concentration on Activity and Combustion of Coke on Pt/Al2O3,” Applied Catalysis, Vol. 19, No. 1, 1985, pp. 203-206. doi:10.1016/S0166-9834(00)82681-0
[23] E. Tronconi, A. O. C. Cavanna and P. Forzatti, “Transient Kinetics of SO2 Oxidation Over SCR-DeNOx Monolith Catalysts,” Industrial and Engineering Chemistry Research, Vol. 38, No. 7, 1999, pp. 2593-2598. doi:10.1021/ie980673e

comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.