한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제16권1호
  • /
  • Pages.900-905
  • /
  • 2015
  • /
  • 1975-4701(pISSN)
  • /
  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
권호 표지
DOI QR코드

DOI QR Code

소성 및 산소농도 조건에 대한 Mn-Cu-TiO2 촉매의 탈질 특성

NOx removal of Mn-Cu-TiO2 catalyst for the calcination and oxygen concentration conditions

  • Jang, Hyun Tae (Department of Chemical Engineering, Hanseo University) ;
  • Cha, Wang Seog (Department of Environmental Engineering, Kunsan National University)
  • 투고 : 2014.10.10
  • 심사 : 2015.01.08
  • 발행 : 2015.01.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 Mn-Cu-$TiO_2$ Civil 촉매를 이용하여 질소산화물을 제거하는 $NH_3$-SCR 공정에서 소성조건 및 산소농도에 대한 영향을 연구하였다. 소성된 촉매시료를 사용하여 $H_2$-TPR 시스템에서 반응온도에 따른 수소전환특성을 조사하였으며, 소성조건에 대한 비표면적변화도 측정하였다. 실험결과 적합한 소성온도는 약 $300^{\circ}C$이며, 소성온도가 $500^{\circ}C$이상일 경우 Mn, Cu 성분의 저온활성이 크게 감소함을 알 수 있었다. SCR반응에서 기상산소는 중요한 반응변수이며 반응에 적합한 농도는 약 8vol%이었다.

DeNOx catalysts composed of Mn, Cu and $TiO_2$ were prepared and tested for $NH_3$-SCR. The performance of each catalyst was studied for the NOx removal efficiency while changing the calcination temperature, reaction time, and oxygen concentration. The hydrogen conversion efficiency of a calcined catalyst was measured at the $H_2$-TPR system. The change in the specific surface area of catalyst according to the calcination temperature was analyzed. As a result, the proper calcination temperature was approximately $300^{\circ}C$. If the calcination temperature is increased to $500^{\circ}C$, the NOx removal efficiency of Mn and Cu constituents is largely decreased at the low temperature range. Oxygen in flue gas is an important parameter in the SCR reaction and optimal oxygen concentration is approximately 8 vol.%.

키워드

참고문헌

  1. J. R. Gilbert, J. H. Thomas, "Chapter 2 reactions of the oxides of nitrogen", Comprehensive Chemical Kinetics, 6, 139-200, 1972. https://doi.org/10.1016/S0069-8040(08)70304-2
  2. H. Bosch, F. Janssen, "Catalytic reduction of nitrogen oxides, a review on the fundamentals and technology", Catal. Today, 2, 369-375, 1998.
  3. K. H. Park, W. S. Cha, "$NO_{x}$ removal of $NH_{3}$-SCR catalysts with operating conditions", Journal of the Korea Academia-Industrial cooperation Society, 13(11), 5610-5614, 2012. https://doi.org/10.5762/KAIS.2012.13.11.5610
  4. M. Kang, E. D. Park, J. M. Kim, J. E. Yie, "Manganese oxide catalysts for $NO_{x}$ reduction with $NH_{3}$ at low temperatures", Appl. Catal. A: Gen., 327, 261-269, 2007. DOI: http://dx.doi.org/10.1016/j.apcata.2007.05.024
  5. B. Thirupathi, P. G. Smirniotis, "Nickel-doped $Mn/TiO_{2}$ as an efficient catalyst for the low-temperature SCR of NO with $NH_{3}$: Catalytic evaluation and characterizations", Journal of Catalysis, 288, 74-83, 2012. DOI: http://dx.doi.org/10.1016/j.jcat.2012.01.003
  6. G. Qi, 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: http://dx.doi.org/10.1016/S0021-9517(03)00081-2
  7. B. Jiang, Z. Li, S. C. Lee, "Mechanism study of the promotional effect of $O_{2}$ on low-temperature SCR reaction on $Fe-Mn/TiO_{2}$ by DRIFT", Chemical Engineering Journal, 225, 52-58, 2013. DOI: http://dx.doi.org/10.1016/j.cej.2013.03.022
  8. H. Chang, J. Li, X. Chen, L. Ma, S. Yang, J. W. Schwank, J. Hao, "Effect of Sn on $MnO_{x}-CeO_{2}$ catalyst for SCR of NOx by ammonia: Enhancement of activity and remarkable resistance to $SO_{2}$", Catalysis Communications, 27, 564-57, 2012. DOI: http://dx.doi.org/10.1016/j.catcom.2012.06.022
  9. L. Singoredjo, R. Korver, F. Kapteijn, J. Moulijin, "Alumina supported manganese oxides for the low-temperature selective catalytic reduction of nitric oxide with ammonia", Appl. Catal. B: Environ., 1, 297-316, 1992. DOI: http://dx.doi.org/10.1016/0926-3373(92)80055-5
  10. H. H. Lee, K. H. Park, W. S. Cha, "Characterization of low temperature selective catalytic reduction over Ti added Mn-Cu metal oxides", Appl. Chem. Eng., 24(6), 599-604, 2013. DOI: http://dx.doi.org/10.14478/ace.2013.1057
  11. K. H. Park, S. H. You, Y. O. Park, S. W. Kim, W. S. Cha, "$NO_{x}$ conversion of Mn-Cu catalyst at the low temperature condition", Journal of the Korea Academia-Industrial Cooperation Society, 12(9), 4250-4256, 2011. DOI: http://dx.doi.org/10.5762/KAIS.2011.12.9.4250
  12. X. Lou, P. Liu, J. Li, K. He, "Effects of calcination temperature on Mn species and catalytic activities of Mn/ZSM-5 catalyst for selective catalytic reduction of NO with ammonia", Applied Surface Science, 307, 382-387, 2014. DOI: http://dx.doi.org/10.1016/j.apsusc.2014.04.041
  13. S. M. Lee, H. H. Lee, S. C. Hong, "Influence of calcination temperature on $Ce/TiO_{2}$ catalysis of selective catalytic oxidation of $NH_{3}$to $N_{2}$", Applied Catalysis A: General, 470, 189-198, 2014. DOI: http://dx.doi.org/10.1016/j.apcata.2013.10.057
  14. K. H. Chuang, Z. S. Liu, M. Y. Wey, "Catalytic activity of copper-supported catalyst for NO reduction in the presence of oxygen: Fitting of calcination temperature and copper loading", Materials Science and Engineering B, 175, 100-107, 2010. DOI: http://dx.doi.org/10.1016/j.mseb.2010.07.011
  15. V. I. Marshneva, E. M. Slavinskaya, O. V. Kalinkina, G. V. Odegova, E. M. Moroz, G. V. Lavrova, A. N. Salanov, "The influence of support on the activity of monolayer vanadium-titania catalysts for selective catalytic reduction of NO with ammonia", J. of Catalysis, 155, 171-180, 1995. DOI: http://dx.doi.org/10.1006/jcat.1995.1201