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

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

NOx Conversion of Mn-Cu Catalyst at the Low Temperature Condition

저온에서 Mn-Cu 촉매의 NOx 전환특성

  • Park, Kwang-Hee (Department of Environmental Energy Systems Engineering, Kyonggi University) ;
  • You, Seung-Han (School of Civil and Environmental Engineering, Kunsan National University) ;
  • Park, Young-Ok (Clean Fossil Fuel Research Center, Korea Institute of Energy Research) ;
  • Kim, Sang-Wung (Leadgenex, Co) ;
  • Cha, Wang-Seog (School of Civil and Environmental Engineering, Kunsan National University)
  • 박광희 (경기대학교 환경에너지시스템공학과) ;
  • 유승한 (군산대학교 토목환경공학부) ;
  • 박영옥 (한국에너지기술연구원) ;
  • 김상웅 ((주)리드제넥스) ;
  • 차왕석 (군산대학교 토목환경공학부)
  • Received : 2011.07.26
  • Accepted : 2011.09.08
  • Published : 2011.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Mn catalyst promoted with Cu were prepared and tested for selective catalytic reduction of $NO_x$ with $NH_3$. Performance of each catalyst was investigated for $NO_x$ activity while changing temperature, space velocity, water content and $O_2$ concentration. Hydrogen conversion efficiency of catalyst was also measured in the $H_2$-TPR system. The inhibition effect of water on catalyst was investigated with the on-off control of water supply. High activity of Mn-Cu catalyst was observed for $160{\sim}260^{\circ}C$. It is found that increase of oxygen concentration acts as a promotor to the increase of catalyst activity but water content acts as a inhibitor.

활성증진 물질 Cu가 첨가된 Mn계 촉매를 제조하여 암모니아를 이용하여 질소산화물을 제거하는 SCR공정에서 질소산화물제거능을 측정하였다. 제조된 촉매를 사용하여 반응온도, 유량, 수분함량 그리고 산소농도에 대한 활성변화를 조사하였다. $H_2$-TPR 시스템에서 온도에 따른 촉매의 수소전환특성을 측정하였다. 수분공급유무를 조절함으로써 촉매반응에 대한 수분의 억제효과를 파악하였다. Mn-Cu계 촉매는 $160{\sim}260^{\circ}C$의 온도범위에서 높은 탈질효율을 보였다. 그리고 산소농도의 증가는 촉매활성 증진효과를 가져왔으나 수분함유는 촉매활성을 감소시키는 역할을 함을 알 수 있었다.

Keywords

References

  1. R. Burch and P. J. Millington., "Selective reduction of nitrogen oxide by hydro-carbons under lean-burn conditions using supported platinum group metal", Catalyst Today, 26, 185-194, 1995. https://doi.org/10.1016/0920-5861(95)00136-4
  2. A. P. Walker, "Mechanistic studies of the selective reduction of NOx over Cu/ZSM-5 and related system", Catalyst Today, 26, 107-116, 1995. https://doi.org/10.1016/0920-5861(95)00133-Z
  3. A. M. Efstathiou and K. Fliatoura, "Selective catalytic teduction of nitric oxide with ammonia over $V_2O_5/TiO_2$ catalyst: A steady-state and transient kinetic study", Applied Catalysis B: Environmental, 6, 35-44, 1995. https://doi.org/10.1016/0926-3373(94)00062-X
  4. H. Niiyama, K. Maruta and E. Echigoya, "The mechanism of the reaction of NO with $NH_3$ over $Cr_2O_3/Al_2O_3$ and $Cr_2O_3$ catalysts; Part II. Isotope labelling studies", J. Catal., 48, 201-207, 1997.
  5. H. Schneider, U. Scharf, A, Wokaun and A. Baiker, "Chromia on titania : IV. Nature of active sites for selective catalytic reduction of NO by $NH_3$", J. Catal., 145, 545-551, 1994.
  6. E. R. Stobbe, B. A. Boer and J. W. Geus, "The reduction and oxidation behaviour of manganese oxides", Catal. Today, 47, 161-168, 1999. https://doi.org/10.1016/S0920-5861(98)00296-X
  7. M. R. Morales, B. P. Barbero, T. Lopez, A. Moreno and L. E. Cadus, "Evaluation and characterization of Mn-Cu mixed oxide catalysts supported on $TiO_2\;and\;ZrO_2$ for ethanol total oxidation", Fuel, 88, 2122-2129, 2009. https://doi.org/10.1016/j.fuel.2009.02.010
  8. J. Papavasiliou, G. Avgouropoulos and T. Ioannides, "Combined steam reforming of methanol over Cu-Mn spinel oxide catalysts", Journal of Catalysis, 251, 7-20, 2007. https://doi.org/10.1016/j.jcat.2007.07.025
  9. H. Bosch and F. Janssen, "Catalytic reduction of nitrogen oxides, A review on the fundamentals and technology", Catal. Today, 2(4), 369-375, 1988. https://doi.org/10.1016/0920-5861(88)80002-6
  10. N. Apostolescu, B. Geiger, K. Hizbullah, M. Jan, S. Kureti, D. Reichert, F. Schott and W. Weisweiler, "Selective catalytic reduction of nitrogen oxides by ammonia on iron oxide catalysts", Applied Catalysis B: Environmental, 62, 104-114, 2006. https://doi.org/10.1016/j.apcatb.2005.07.004
  11. S. B. Kanungo, "Physicochemical properties of $MnO_2\;and\;MnO_2-CuO$ and their relationship with the catalytic activity for $H_2O_2$ decomposition and CO oxidation", Journal of Catalysis, 58, 419-435, 1979. https://doi.org/10.1016/0021-9517(79)90280-X
  12. W.S. Kijlstra, D.S. Brands, E.K. Poels and A. Bliek, "Mechanism of the Selective Catalytic Reduction of NO by $NH_3\;over\;MnOx/Al_2O_3$ I. Adsorption and Desorption of the Single Reaction Components", Journal of Catalysis, 171, 208-218, 1997. https://doi.org/10.1006/jcat.1997.1788
  13. J. Li, H. Chang, L. Ma, J. Hao and R.T. Yang, "Low-temperature selective catalytic reduction of NOx with $NH_3$ over metal oxide and zeolite catalysts-A review", Catalysis today, In Press, Corrected Proof, 2011.

Cited by

  1. Deactivation of V2O5/TiO2 catalytic system on the sulfuric oxides vol.16, pp.11, 2015, https://doi.org/10.5762/KAIS.2015.16.11.7433