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Characterization Studies for the Selective Catalytic Oxidation of Ammonia Utilizing Ce/TiO2 Catalyst

Ce/TiO2 촉매를 이용한 암모니아의 선택적 산화반응 특성 연구

  • Lee, Hyun Hee (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University) ;
  • Kim, Ki Wang (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University) ;
  • Hong, Sung Chang (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
  • 이현희 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 김기왕 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 홍성창 (경기대학교 일반대학원 환경에너지시스템공학과)
  • Published : 2013.10.31

Abstract

In this study, selective catalytic oxidation (SCO) of $NH_3$ using $Ce/TiO_2$ catalyst was examined to control the slipped NH3 from various pollutants. It was found that the catalytic activity increased with increasing the Ce loadings till reaching 10 wt% Ce loading. However, when Ce loaded over 10 wt%, the activity of catalysts rather decreased than that of catalysts, below 10 wt% Ce. Therefore, the composition of $Ce/TiO_2$ catalyst optimized in this study can be applied to industrial fields.

References

  1. H. T. Jang, Y. K. Park, Y. S. Ko, and W. S. Cha, Selective Catalytic Oxidation of Ammonia in the Presence of Manganese Catalysts, Korean Chem. Eng. Res., 46, 498 (2008).
  2. J. Y. Lee, S. B. Kim, and S. C. Hong, Characterization and Reactivity of Natural Manganese ore Catalysts in the Selective Catalytic Oxidation of Ammonia to Nitrogen, Chemosphere, 50, 1115 (2003). https://doi.org/10.1016/S0045-6535(02)00708-7
  3. M. J. Lippits, A. C. Gluhoi, and B. E. Nieuwenhuys, A comparative study of the selective oxidation of $NH_3$ to $N_2$ over gold, silver and copper catalysts and the effect of addition of $Li_2O$ and CeOx, Catal. Today, 137, 446 (2008). https://doi.org/10.1016/j.cattod.2007.11.021
  4. S. A. C. Carabineiro, A. V. Matveev, V. V. Gorodetskii, and B. E. Nieuwenhuys, Selective oxidation of ammonia over Ru (0001), Surf. Sci., 555, 83 (2004). https://doi.org/10.1016/j.susc.2004.02.022
  5. R. Q. Long and R. T. Yang, Selective Catalytic Oxidation of Ammonia to Nitrogen over $Fe_2O_3-TiO_2$ Prepared with a Sol-Gel Method, J. Catal., 207, 158 (2002). https://doi.org/10.1006/jcat.2002.3545
  6. S. Lenihan and T. Curtin, The selective oxidation of ammonia using copper-based catalysts: The effects of water, Catal. Today, 145, 85 (2009). https://doi.org/10.1016/j.cattod.2008.06.017
  7. S. D. Lin, A. C. Gluhoi, and B. E. Nieuwenhuys, Ammonia oxidation over $Au/MOx/{\gamma}-Al_2O_3$-activity, selectivity and FTIR measurements Original Research Article, Catal. Today, 90, 3 (2004). https://doi.org/10.1016/j.cattod.2004.04.047
  8. B. M. Reddy, A. Khan, Y. Yamada, T. Kobayashi, and S. Loridant, J. Volta, Structural Characterization of $CeO_2-TiO_2$ and $V_2O_5/CeO_2-TiO_2$ Catalysts by Raman and XPS Techniques, J. Phys. Chem., 107, 5162 (2003).
  9. M. Casapu, O. Krocher, and M. Elsener, Screening of doped $MnOx-CeO_2$ catalysts for low-temperature NO-SCR, Appl. Catal. B: Environ., 88, 413 (2009). https://doi.org/10.1016/j.apcatb.2008.10.014
  10. J. C. Lou, C. M. Hung, and S. F. Yang, Selective Catalytic Oxidation of Ammonia over Copper-Cerium Composite Catalyst, J. Air & Waste Manage. Assoc., 54, 68 (2004). https://doi.org/10.1080/10473289.2004.10470881
  11. J. Petryk and E. Kolakowska, Cobalt oxide catalysts for ammonia oxidation activated with cerium and lanthanum, Appl. Catal. B: Environ., 24, 121 (2000). https://doi.org/10.1016/S0926-3373(99)00099-5
  12. K. K. Kranthi, A. Vital, J. P. Dellemann, K. Michalow, T. Graule, D. Fem, and A. Baiker, Flame-made $WO_3/TiO_2$ nanoparticles: Relation between surface acidity, structure and photocatalytic activity, Appl. Catal. B: Environ., 79, 53 (2008). https://doi.org/10.1016/j.apcatb.2007.09.036
  13. I. Atribak, B. Azambre, A. B. Lopez, and A. Garcia-Garcia, Effect of NOx adsorption/desorption over ceria-zirconia catalysts on the catalytic combustion of model soot, Appl. Catal. B: Environ., 92, 126 (2009). https://doi.org/10.1016/j.apcatb.2009.07.015
  14. S. Watanabe, X. Ma, and X. Song, Characterization of Structural and Surface Properties of Nanocrystalline $TiO_2-CeO_2$ Mixed Oxides by XRD, XPS, TPR, and TPD, J. Phys. Chem. C, 113, 14249 (2009). https://doi.org/10.1021/jp8110309
  15. 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 NH3, J. Hazard. Mater., 174, 734 (2010). https://doi.org/10.1016/j.jhazmat.2009.09.112
  16. S. Yang, W. Zhu, X. Wang, and R. Metals, Influence of the structure of $TiO_2$, $CeO_2$, and $CeO_2-TiO_2$ supports on the activity of Ru catalysts in the catalytic wet air oxidation of acetic acid, 30, 488 (2011). https://doi.org/10.1007/s12598-011-0417-z