Browse > Article
http://dx.doi.org/10.9713/kcer.2014.52.4.443

Selective Catalytic Reduction of NO by H2 over Pt-MnOx/ZrO2-SiO2 Catalyst  

Kim, Juyoung (School of Applied Chemical Engineering, Chonnam National University)
Ha, Kwang (School of Applied Chemical Engineering, Chonnam National University)
Seo, Gon (School of Applied Chemical Engineering, Chonnam National University)
Publication Information
Korean Chemical Engineering Research / v.52, no.4, 2014 , pp. 443-450 More about this Journal
Abstract
Selective catalytic reduction of nitrogen monoxide by hydrogen ($H_2$-SCR of NO) over platinum catalysts impregnated on zirconia-incorporated silica ($ZrO_2-SiO_2$) and manganese oxide ($MnO_x$) was investigated. $Pt-MnO_x$ catalyst showed low conversions and low yields of $N_2O$ and $NO_2$ at $100{\sim}350^{\circ}C$. On the other hand, NO conversions over $Pt/ZrO_2-SiO_2$ were very high, but $N_2O$ was predominantly produced at $100-150^{\circ}C$ and the yield of $NO_2$ increased with temperature at $200-300^{\circ}C$, resulting in poor $N_2$ yields. $Pt-MnO_x/ZrO_2-SiO_2$ exhibited a small enhancement in $N_2$ yield at $100-150^{\circ}C$ due to the synergy of $MnO_x$ and $ZrO_2-SiO_2$. The surface composition and oxidation state of the catalyst components and the acidity of the catalysts were examined. IR spectra of the adsorption of NO and their subsequent reactions with hydrogen on these catalysts were also recorded. The variations of conversion and product yield according to the catalyst components in the $H_2$-SCR of NO were discussed in relation to their catalytic roles.
Keywords
SCR; Synergy Effect; $MnO_x$; $ZrO_2-SiO_2$; Pt; NO;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Pitchon, V. and Fritz, A., "The Relation Between Surface State and Reactivity in the $DeNO_x$ Mechanism on Platinum-based Catalysts," J. Catal., 186, 64-74(1999).   DOI   ScienceOn
2 Costa, C. N., Savva, P. G., Fierro, J. L. G. and Efstathiou, A. M., "Industrial $H_2$-SCR of NO on a Novel Pt/MgO-$CeO_2$ Catalyst," Appl. Catal. B: Environ., 75, 147-156(2007).   DOI   ScienceOn
3 Park, S. M., Jang, H.-G. Kim, E. S., Han, H. S. and Seo, G., "Incorporation of Zirconia onto Silica for Improved Pt/$SiO_2$ Catalysts for the Selective Catalytic Reduction of NO by $H_2$," Appl. Catal. A: Gen., 427-428, 155-164(2012).   DOI   ScienceOn
4 Si, H., Wang, H., Shen, H., Zhou, C., Li, S., Lou, S., Xu, W., Du, Z. and Li, L. S., "Controlled Synthesis of Monodisperse Manganese Oxide Nanocrystals," Cryst. Eng. Comm., 11, 1128-1132(2009).   DOI   ScienceOn
5 Oku, M., Hirokawa, K. and Ikeda, S., "X-ray Photoelectron Spectroscopy of Manganese-oxygen Systems," J. Electron Spectrosc. Relat. Phenom., 7, 465-473(1975).   DOI   ScienceOn
6 Wagner, C. D., Riggs, W. M., Davis, L. E., Moulder, J. F. and Muilenberg, G. E., Handbook of X-ray Photoelectron Spectroscopy, Perkin-Elmer Corporation, USA(1979).
7 Tanabe, K., Misono, M., Ono, Y. and Hattori, H., "New Solid Acids and Bases: Their Catalytic Properties," Stud. Surf. Sci. Catal., 51, (1989).
8 Costa, C. N. and Efstathiou, A. M., "Mechanistic Aspects of the $H_2$-SCR of NO on a Novel Pt/MgO-$CeO_2$ Catalyst," J. Phys. Chem. C, 111, 3010-3020(2007).
9 Ham, S. W., Nam, I. S. and Kim, Y. G., "Activity and Durability of Iron-exchanged Mordenite-type Zeolite Catalyst for the Reduction of NO by $NH_3$," Korean J. Chem. Eng., 17(3), 318-324(2000).   DOI   ScienceOn
10 Jeong, S. K., Park, T. S. and Hong, S. C., "Selective Catalytic Reduction of NO on Manganese Sulfates," Korean Chem. Eng. Res., 46(3) 473-478(2008).   과학기술학회마을
11 Park, S. M., Kim, M. Y., Kim, E. S., Han, H. S. and Seo, G., "$H_2$-SCR of NO on Pt-$MnO_x$ Catalysts: Reaction Path via $NH_3$ Formation," Appl. Catal. A: Gen., 395, 120-128(2011).   DOI   ScienceOn
12 Miller, W., "Development of Urea-SCR for Heavy Duty Trucks Demonstration Update," 6th DEER Workshop(2000).
13 Costa, C. N. and Efstathiou, A. M., "Low-temperature $H_2$-SCR of NO on a Novel Pt/MgO-$CeO_2$ Catalyst," Appl. Catal. B: Environ., 72, 240-252(2007).   DOI   ScienceOn
14 Hamada, H. and Haneda, M., "A Review of Selective Catalytic Reduction of Nitrogen Oxides with Hydrogen and Carbon Mo$NO_x$ide," Appl. Catal. A: Gen., 421-422, 1-13(2012).   DOI   ScienceOn
15 Fu, L. and Chuang, K. T., "Control of Nitrogen Oxide ($NO_x$) Emissions by Selective Catalytic Reduction with Hydrogen over Hydrophobic Catalysts," Energy Fuels, 3, 740-743(1989).   DOI
16 Liu, Z., Li, J. and Woo, S. I., "Recent Advances in the Selective Catalytic Reduction of $NO_x$ by Hydrogen in the Presence of Oxygen," Energy Environ. Sci., 5, 8799-8814(2012).   DOI   ScienceOn
17 Association des Constructures Europeens d'Automobiles, "New passenger car registrations," (2012).
18 http://www.doosan.com/doosanengine/kr/media/engineschool/history/index.page.
19 Takahashi, N., Shinjoh, H., Iijima, T., Suzuki, T., Yamazaki, K., Yokota, K., Suzuki, H., Miyoshi, N., Matsumoto, S., Tanizawa, T., Tanaka, T., Tateishi, S. and Kasahara, K., "The New Concept 3-way Catalysts for Automotive Lean-burn Engine: $NO_x$ Storage and Reduction Catalyst," Catal. Today, 27, 63-69(1996).   DOI   ScienceOn
20 Shelef, M., "Selective Catalytic Reduction of $NO_x$ with N-free Reductants," Chem. Rev., 95, 209-225(1995).   DOI   ScienceOn
21 Yang, S., Wang, X., Chu, W., Song, Z. and Zhao, S., "An Investigation of the Surface Intermediates of $H_2$-SCR of $NO_x$ over Pt/ H-FER," Appl. Catal. B: Environ., 107, 380-385(2011).   DOI
22 Kim, J.-K., Park, K.-H., Hong, S.-C., Lee, E.-D. and Kang, Y., "Effects of Calcium on the Activity of $V_2O_5/TiO_2$ Catalysts in SCR Processes," Korean Chem. Eng. Res., 50(5) 772-777(2012).   과학기술학회마을   DOI   ScienceOn
23 Wu, P., Li, L., Yu, Q., Wu, G. and Guan, N., "Study on Pt/Al-MCM-41 for NO Selective Reduction by Hydrogen," Catal. Today, 158, 228-234(2010).   DOI
24 Hadjiivanov, K., "Use of Overtones and Combination Modes for the Identification of Surface $NO_x$ Anionic Species by IR Spectroscopy," Catal. Today, 68, 157-161(2000).
25 Sedlmair, C., Seshan, K., Jentys, A. and Lercher, J. A., "Elementary Steps of $NO_x$ Adsorption and Surface Reaction on a Commercial Storage-reduction Catalyst," J. Catal., 214, 308-316(2003).   DOI   ScienceOn
26 Liu, Z. and Woo, S. I., "Recent Advances in Catalytic $DeNO_x$ Science and Technology," Cat. Rev. Sci. Eng., 48, 43-89(2006).   DOI   ScienceOn