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http://dx.doi.org/10.14478/ace.2015.1012

Correlation between Physicochemical Properties of Various Commercial TiO2 Supports and NH3-SCR Activities of Ce/Ti Catalysts  

Kwon, Dong Wook (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Hong, Sung Chang (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.26, no.2, 2015 , pp. 193-198 More about this Journal
Abstract
Ceria supported on various commercial $TiO_2$ catalysts were prepared by wet-impregnation method. We confirmed that the correlation between physicochemical properties of $TiO_2$ supports and SCR activities. Physicochemical properties of the various $TiO_2$ were evaluated using X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area, X-ray photoelectron spectroscopy (XPS), and pH analysis. Ce/Ti catalyst exhibited different SCR activities with respect to physicochemical properties of $TiO_2$. An excellent activity was obtained as the surface area of $TiO_2$ increased. In the case of CeOx surface density, the excellent activity in a range of $2.5{\sim}14.5CeOx/nm^2$ was achieved and the activity tended to decrease above $14.5CeOx/nm^2$. The O/Ti mole ratio of $TiO_2$ in the range of 1.32 to 1.79 showed an excellent SCR activity. It was also confirmed that the pH of the $TiO_2$ has no effects on the SCR activity. In order to achieve excellent SCR activities, ceria oxide should be supported on $TiO_2$ possessing a high specific surface area and certain O/Ti mole ratio. In addition, the catalyst with the low CeOx surface density resulted from the high dispersed ceria oxide should be prepared.
Keywords
$NH_3$-SCR; $Ce/TiO_2$; ceria; NOx removal;
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1 C. Liang, L. Junhua, G. Maofa, M. Lei, and C. Huazhen, Mechanism of Selective Catalytic Reduction of NOx with $NH_{3}$ over $CeO_{2}$-$WO_{3}$ Catalysts, Chin. J. Catal., 32, 836-841 (2011).   DOI   ScienceOn
2 G. Zhou, B. Zhong, W. Wang, X. Guan, B. Huang, D. Ye, and H. Wu, In situ DRIFTS study of NO reduction by NH over Fe-Ce-Mn/ZSM-5 catalysts, Catal. Today, 175, 157-163 (2011).   DOI   ScienceOn
3 B. S. Shirke, P. V. Korake, P. P. Hankare, S. R. Bamane, and K. M. Garadkar, Synthesis and characterization of pure anatase $TiO_{2}$ nanoparticles, J. Mater. Sci., 22, 821-824 (2011).
4 X. Meng, H. Huang, H. Weng, and L. Shi, Ni/ZnO-based Adsorbents Supported on $Al_{2}O_{3}$, $SiO_{2}$, $TiO_{2}$,$ZrO_{2}$: A Comparison for Desulfurization of Model Gasoline by Reactive Adsorption, Bull. Korean Chem. Soc., 33, 3213-3217 (2012).   DOI   ScienceOn
5 R. D. Shannon and J. A. Pask, Kinetics of the Anatase-Rutile Transformation, J. Am. Ceram. Soc., 48, 391-398 (1965).   DOI
6 P. G. Smirniotis, P. M. Sreekanth, D. A. Pena, and R. G. Jenkins, Manganese oxide catalysts supported on $TiO_{2}$, $Al_2O_3$, and $SiO_{2}$: A comparison for low-temperature SCR of NO with $NH_{3}$, Ind. Eng. Chem. Res., 45, 6436-6443 (2006).   DOI   ScienceOn
7 F. Kapteijn, A. D. V. Langeveld, J. A. Moulijn, and A. Andrein, Alumina-Supported Manganese Oxide Catalysts: I. Characterization: Effect of Precursor and Loading, J. Catal., 150, 94-104 (1994).   DOI   ScienceOn
8 G. Madia, M. Elsener, M. Koebel, F. Raimondi, and A. Wokaun, Thermal stability of vanadia-tungsta-titania catalysts in the SCR process, Appl. Catal. B: Environ., 39, 181-190 (2002).   DOI
9 I. E. Wachs, Raman and IR studies of surface metal oxide species on oxide supports: Supported metal oxide catalysts, Catal. Today, 27, 437-455 (1996).   DOI   ScienceOn
10 I. Giakoumelou, C. Fountzoula, C. Kordulis, and S. Boghosian, Molecular structure and catalytic activity of $V_{2}O_{5}$/$TiO_{2}$ catalysts for the SCR of NO by $NH_{3}$: In situ Raman spectra in the presence of $O_{2}$, $NH_{3}$, NO, $H_{2}$, $H_{2}O$, and $SO_{2}$, J. Catal., 239, 1-12 (2006).   DOI   ScienceOn
11 P. W. Seo, S. P. Cho, S. H. Hong, and S. C. Hong, The influence of lattice oxygen in titania on selective catalytic reduction in the low temperature region, Appl. Catal. A: Gen., 380, 21-27 (2010).   DOI
12 F. L. Toma, G. Bertrand, S. Begin, C. Meunier, O. Barres, D. Klein, and C. Coddet, Microstructure and environmental functionalities of $TiO_{2}$-supported photocatalysts obtained by suspension plasma spraying, Appl. Catal. B: Environ., 68, 74-84 (2006).   DOI
13 I. Bertoti, M. Mohai, J. L. Sullivan, and S. O. Saied, Surface characterisation of plasma-nitrided titanium: an XPS study, Appl. Surf. Sci., 84, 357-371 (1995).   DOI   ScienceOn
14 T. W. Chien and H. Chu, Removal of $SO_{2}$ and NO from flue gas by wet scrubbing using an aqueous $NaClO_{2}$ solution, J. Hazard. Mater., 80, 43-57 (2000).   DOI   ScienceOn
15 G. D. Panagiotou, T. Petsi, K. Bourikas, C. Kordulis, and A. Lycourghiotis, The interfacial chemistry of the impregnation step involved in the preparation of tungsten(VI) supported titania catalysts, J. Catal., 262, 266-279 (2009).   DOI   ScienceOn
16 P. Forzatti, Present status, and perspectives in de-NOx SCR catalysis, Appl. Catal. A: Gen., 222, 221-236 (2001).   DOI
17 G. D. Panagiotou, T. Petsi, K. Bourikas, A. G. Kalampounias, S. Boghosian, C. Kordulis, and A. Lycourghiotis, Interfacial impregnation chemistry in the synthesis of molybdenum catalysts supported on titania, J. Phys. Chem. C, 114, 11868-11879 (2010).   DOI   ScienceOn
18 G. Qi and R.T. Yang, Performance and kinetics study for low-temperature SCR of NO with $NH_{3}$ over MnOx-$CeO_{2}$ catalyst, J. Catal. G. Qi, and R.T. Yang, Performance and kinetics study for low-temperature SCR of NO with $NH_{3}$ over MnOx-$CeO_{2}$ catalyst, J. Catal., 217, 434-441 (2003).   DOI   ScienceOn
19 P. S. Metkar, M. P. Harold, and V. Balakotaiah, Selective catalytic reduction of NOx on combined Fe- and Cu-zeolite monolithic catalysts: Sequential and dual layer configurations, Appl. Catal. B: Environ., 111-112, 67-80 (2012).   DOI
20 S. Roy, M. S. Hedge, and G. Madras, Catalysis for NOx abatement, Appl. Energy, 86, 2283-2297 (2009).   DOI   ScienceOn
21 H. Karge, Handbook of Heterogeneous Catalysis, 2nd edn, 8 (2008).
22 X. Gao, Y. Jiang, Y. Zhong, Z. Luo, and K. Cen, The activity and characterization of $CeO_{2}$-$TiO_{2}$ catalysts prepared by the sol-gel method for selective catalytic reduction of NO with $NH_{3}$, J. Hazard. Mater., 174, 734-739 (2010).   DOI   ScienceOn
23 H. Chang, J. Li, J. Yuan, L. Chen, Y. Dai, H. Arandiyan, J. Xu, and J. Hao, Ge, Mn-doped $CeO_{2}$-$WO_{3}$ catalysts for $NH_{3}$-SCR of NOx: Effects of $SO_{2}$ and $H_{2}$ regeneration, Catal. Today, 201, 139-144 (2013).   DOI   ScienceOn
24 G. Qi, R. T. Yang, and R. Chang, MnOx-$CeO_{2}$ mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with $NH_{3}$ at low temperatures, Appl. Catal. B: Environ., 51, 93-106 (2004).   DOI
25 W. Shan, F. Liu, H. He, X. Shi, and C. Zhang, An environmentally- benign $CeO_{2}$-$TiO_{2}$ catalyst for the selective catalytic reduction of NOx with $NH_{3}$ in simulated diesel exhaust, Catal. Today, 184, 160-165 (2012).   DOI   ScienceOn
26 W. Q. Xu, Y. B. Yu, C. B. Zhang, and H. He, Selective catalytic reduction of NO by $NH_{3}$ over a Ce/$TiO_{2}$ catalyst, Catal. Commun., 9, 1453-1457 (2008).   DOI   ScienceOn
27 Y. S. Shen, S. M. Zhu, T. Qiu, and S. B. Shen, A novel catalyst of $CeO_{2}$/$Al_2O_3$ for selective catalytic reduction of NO by $NH_{3}$, Catal. Commun., 11, 20-23 (2009).   DOI   ScienceOn
28 Z. Wang, Z. Qu, X. Quan, and H. Wang, Selective catalytic oxidation of ammonia to nitrogen over ceria-zirconia mixed oxides, Appl. Catal. A: Gen., 411-412, 131-138 (2012).   DOI
29 C. Liu, L. Chen, J. Li, L. Ma, H. Arandiyan, Y. Du, J. Xu, and J. Hao, Enhancement of activity and sulfur resistance of $CeO_{2}$ supported on $TiO_{2}$-$SiO_{2}$ for the selective catalytic reduction of NO by $NH_{3}$, Environ. Sci. Technol., 46, 6182-6189 (2012).   DOI   ScienceOn
30 Y. Peng, J. Li, L. Chen, J. Chen, J. Han, H. Zhang, and W. Han, Alkali metal poisoning of a $CeO_{2}$-$WO_{3}$ catalyst used in the selective catalytic reduction of NOx with $NH_{3}$: an experimental and theoretical study, Environ. Sci. Technol., 46, 2864-2869 (2012).   DOI   ScienceOn