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REACTIVITY AND DURABILITY OF V2O5 CATALYSTS SUPPORTED ON SULFATED TIO2 FOR SELECTIVE REDUCTION OF NO BY NH3
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  • Journal title : Environmental Engineering Research
  • Volume 10, Issue 1,  2005, pp.31-37
  • Publisher : Korean Society of Environmental Engineering
  • DOI : 10.4491/eer.2005.10.1.031
 Title & Authors
REACTIVITY AND DURABILITY OF V2O5 CATALYSTS SUPPORTED ON SULFATED TIO2 FOR SELECTIVE REDUCTION OF NO BY NH3
Choo, Soo-Tae; Nam, Chang-Mo;
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 Abstract
The selective catalytic experiments using both sulfated/sulfur-free titania and V2O5/TiO2 catalysts have been conducted for NO reduction by NH3 in a packed-bed, down-flow reactor. The sulfated and vanadia loaded titania exhibited higher activity for NO removal than the sulfur-free catalysts, where > 90% NO removal was achieved over the sulfated V2O5/TiO2 catalyst between 280∼500 C. The surface structure of vanadia species on the catalyst surface played a critical role in the high performance of catalysts in which the existence of monomeric/polymeric vanadate is revealed by Raman spectra studies. Water vapor and SO2 were added to the reacting system for the catalyst deactivation tests. At higher temperatures (T ≥ 350 C), little deactivation was observed over the sulfated V2O5/TiO2 catalysts, showing good durability against SO2 and water vapor, which is compared with deactivation at lower temperatures.ヨ⨀
 Keywords
 Language
English
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 References
1.
Bosch, H. and Janssen, F., 'Catalytic reduction of nitrogen oxides,' Catal. Today, 2, 369 (1998)

2.
Nam, C. M. and Gibbs, B. M., 'Selective catalytic reduction of NO by hydrocarbons over Cu/$Al_{2}O_{3}$,' Environmental Sciences, 4, 201-208 (2000)

3.
Nam, C. M., 'NOx reduction by SNCR and its reaction mechanism under oxidizing diesel flue gas conditions,' Environ. Eng. Res., 8(1), 1, 31-40 (2003) crossref(new window)

4.
Nam, C. M., Jang, K. R., and Kang, Y., 'Industrial plasma experiments for simultaneous removal of $SO_2$/NOx from a coalfired power plant,' Environ. Eng. Res., 5(4),199-206 (2000)

5.
Busca, G., Lietti, L., Ramis, G., and Berti, F., 'Chemical and Mechanistic Aspects of the Selective Catalytic Reduction of NOx by Ammonia over Oxide catalyst : A review,' Appl. Catal. B., Environment, 18, 1-36 (1998) crossref(new window)

6.
Nischt, W., Wooldridge, B., and Bigalbal, J., 'Recent SCR retrofit experience on coalfired boilers,' Presented to POWER-GEN International '99, Nov. 30- Dec. 2, New Orleans, Louisiana, USA, (1999)

7.
Luders, H., Backes, R., Huthwohl, G., Ketcher, D. A., Horrocks, R. W., Hurley, R. G., and Huthwohl, G., 'An urea lean NOx catalyst system for light duty diesel vehicles,' SAE Paper 952493, (1995)

8.
Svachula, J., Ferlazzo, N., Forzatti, P., Tronconi, E., and Bregani, F., 'Oxidation of $SO_2$ to $SO_3$ over Honeycomb DeNOxing Catalysts,' Ind. Eng. Chem. Res., 32, 826834 (1993)

9.
Piehl, G., Liese, T., and Grunert, W., 'Activity, selectivity and durability of VO-ZSM- 5 catalysts for the selective catalytic reduction of NO by ammonia,' Catal. Today, 54, 401 -406 (1999) crossref(new window)

10.
Chen, J. and Yang, R., 'Mechanism of Poisoning of the $V_{2}O_{5}/TiO_2$ Catalyst for the Reduction of NO by $NH_3$, ' J. Catal., 125, 411 -420 (1990) crossref(new window)

11.
Amiridis, M., Wachs, J., Deo, G., Jehng, J., and Kim, D., 'Reactivity of $V_{2}O_{5}$ Catalysts for the Selective Catalytic Reduction of NO by $NH_3$: Influence of Vanadia Loading, $H_{2}O$, and $SO_2$,' J. Catal., 161, 247-253 (1996) crossref(new window)

12.
Matsuda, S., Kamo, T., Kata, A, Nakajima, F., Kumura, T., and Kuroda, H., 'Deposition of Ammonium Bisulfate in the Selective Catalytic Reduction of Nitrogen Oxides with Ammonia,' Ind. Eng. Chem. Res., 21, 4852 (1986)

13.
Went, G., Leu, L., and Bell, A., 'The Effects of Structure on the Catalytic Activity and Selectivity of $V_{2}O_{5}TiO_2$ for the Reduction of NO by $NH_3$,' J. Catal., 134, 492 - 505 (1992) crossref(new window)

14.
Choo, S. T., 'Selective catalytic reduction of NO by $NH_3$ over $V_{2}O_{5}$ supported on sulfated $TiO_2$ catalysts,' Ph.D Thesis, Pohang University of Science and Technology, Department of Chemical Engineering, Korea, (2001)

15.
Choo, S. T., Lee, Y. K., Nam, J. S., Ham, S. W. and Lee, J. B., 'Characteristics of $V_{2}O_{5}$ supported on sulfated $TiO_2$ for selective catalytic reduction of NO by $NH_3$,' Appl. Catal. A., General, 200, 177 (2000)

16.
Kijlstra, W., Komen, J., Andreini, A., Poels, E., and Bliek, A., Hightower, J., Delgass, W., Iglesia, E., and Bell, A (Eds.); 11th International Congress on Catalysis-40th Anniversary, Studies in Surface Science and Catalysis, 101, 951 - 960 (1996)

17.
Topsoe, N., Topsoe, H., and Dumesic, J., 'Vanadia/Titania Catalysts for Selective Catalytic Reduction (SCR) of Nitric Oxide by Ammonia,' J. Catal., 151, 226-240 (1995) crossref(new window)