공업화학 (Applied Chemistry for Engineering)

  • 제24권5호
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  • Pages.494-498
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  • 2013
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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Ce/TiO2 촉매를 이용한 암모니아의 선택적 산화반응 특성 연구

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

  • 이현희 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 김기왕 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 홍성창 (경기대학교 일반대학원 환경에너지시스템공학과)
  • 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)
  • 발행 : 2013.10.31
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는, 다양한 오염원에서 발생되는 암모니아를 제어하기 위해 $Ce/TiO_2$ 촉매를 이용한 암모니아의 선택적 촉매 산화반응에 관한 연구가 수행되었다. Ce 함량이 10 wt%가 될 때까지는 Ce 함량이 증가할수록 촉매 성능이 증진됨이 관찰되었다. 그러나 그 이상의 함량에서는 오히려 촉매활성이 감소하였다. 따라서 본 연구에 의한 최적 $Ce/TiO_2$ 촉매는 실제 현장에 적용될 수 있을 것으로 판단된다.

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.

키워드

참고문헌

  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