Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
권호 표지
DOI QR코드

DOI QR Code

Low Temperature Selective Catalytic Reduction of NOx over V2O5/TiO2 Catalyst Doped with Mn

Mn이 첨가된 V2O5/TiO2 촉매상에서 질소산화물의 저온 SCR 특성

  • Published : 2004.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

$V_{2}O_{5}/TiO_{2}$ catalysts promoted with Mn were prepared and tested for selective catalytic reduction of NOx in $NH_3.$ The effects of promoter content, degree of catalyst loading were investigated for NOx activity while changing temperatures, mole ratio, space velocity and $O_2$ concentration. Among the various $V-{2}O_{5}$ catalysts having different metal loadings, $V-{2}O_{5}$(1 wt.%) catalyst showed the highest activity(98%) under wide temperature range of $200-250^{\circ}C.$ When the $V-{2}O_{5}$ catalyst was further modified with 5 wt.% Mn as a promoter, the highest activity(90-47%) was obtained over the low temperature windows of $100-200^{\circ}C.$ From Mn-$V_{2}O_{5}/TiO_{2}$, it was found that by addition of 5 wt.% Mn on $V_{2}O_{5}/TiO_{2}$ catalyst, reduction activity of catalyst was improved, which resulted in the increase of catalytic activity and NOx reduction. According to the results, NOx removal decreased for 10%, but the reaction temperature down to $100^{\circ}C.$

Keywords

References

  1. Bosch, H. and F. Jassen, 1988, Catalytic Reduction of Nitrogen Oxides. A Review on the Fundamental and Technology, Catal. Today, 2(4), 369-531. https://doi.org/10.1016/0920-5861(88)80002-6
  2. Kang, M. P., Y. S. Song, H. S. Lee, S. D. Kim, Y. O. Park, T. S. Hwang and Y. W. Rhee, 2002, Effects of Catalyst Coating Methods on NO Removal Characteristics of Functional Fabric Filters, HWAHAK KONGHAK, 40(6), 725-728.
  3. Qi, G. and R. T. Yang, 2003, Low-temperature selective catalytic reduction of NO with $NH_3$ over iron and manganese oxides supported on titania, Appl. Catal. B : environ., 44, 217-225. https://doi.org/10.1016/S0926-3373(03)00100-0
  4. Qi, G. and R. T. Yang, 2003, Performance and kinetics study for low-temperature SCR of NO with $NH_3$ over MnOx-$CeO_2$ catalyst, J. Catal., 217, 434. https://doi.org/10.1016/S0021-9517(03)00081-2
  5. Jeong, S. K. and S. C. Hong, 2001, The Characteristic of selective Catalytic Reduction of Nitrogen Oxides over Natural Manganese Ore with $NH_3$ at Low Temperature, J. Korean Ind. Eng. Chem., 12(8), 841-845.
  6. 대구지역환경기술개발센터, 2001, Evaluation of NOx Removal Efficiency in SNCR/SCR Combined Process, 최종연구보고서
  7. Sloss, L. L., A. K. Hjakmasson, H. N. Soud, L. M. Cambell, D. K. Stome, G. S. Shareef, T. Emmel, M. Maibodi, C. D. Livemgood and J. Markvssen, 1992, Nitrogen Oxides Control Technology Fact Book, Noyes Data Corporation, USA, 199-206pp.
  8. Ertl, G., H. Knozinger and J. Weitcamp, 1997, Handbook of Heterogeneous Catalysis, 4, VCH Ltd., Germany, 2690pp.
  9. Niiyama, H., K. Maruta and E. Echigoya, 1977, The Mechanism of the Reaction of NO with $NH_3$ over $Cr_{2}O_{3}/Al_{2}O_{3}$ and $Cr_{2}O_{3}$ Catalysts; Part II. Isotope Labelling Studies, J. Catal., 48, 201. https://doi.org/10.1016/0021-9517(77)90091-4
  10. Markvart, M. and V. Pour, 1975, Selective Reduction of Nitrogen Oxides by Ammonia using non-platinum Catalysts, Int. Chem. Eng., 15, 546.
  11. Schneider, H., U. Scharf, A. Wokaun and A. Baiker, 1994, Chromia on Titania : IV. Nature of Active Sites for Selective Catalytic Reduction of NO by $NH_3$, J. Catal., 145, 545.
  12. Kijlstra, W. S., D. S. Brands, H. I. Smit, E. K. Poels and A. Bliek, 1997, Mechanism of the Selective Catalytic Reduction of NO with $NH_3$ over $MnO_{x}/Al_{2}O_{3}^{{\ast}1}$, J. Catal., 171, 219-230. https://doi.org/10.1006/jcat.1997.1789
  13. Yamashita, T. and A. Vannice, 1996, NO Decomposition over $Mn_{2}O_{3}$ and $Mn_{3}O_{4}$, J. Catal., 163, 158. https://doi.org/10.1006/jcat.1996.0315
  14. Stobbe, E. R., B. A. Boer and J. W. Geus, 1999, The reduction and oxidation behaviour of manganese oxides, Catal. Today, 47, 161. https://doi.org/10.1016/S0920-5861(98)00296-X
  15. Deo, G. and I. E. Wachs, 1994, Effect of Additives on the Structure and Reactivity of the Surface Vanadium Oxide Phase in $V_{2}O_{5}/TiO_{2}$ Catalysts, J. Catal., 146, 335. https://doi.org/10.1006/jcat.1994.1072
  16. Dunn, J. P., P. R. Koppula, H. G. Stenger and I. E. Wachs, 1998, Oxidation of sulfur dioxide to sulfur trioxide over supported vanadia catalysts, Appl. Catal. B : environ., 19, 103. https://doi.org/10.1016/S0926-3373(98)00060-5
  17. 산업자원부, 2002, The Basic Study to Select Reduction catalyst for Using Fabric Filter, 최종보고서.
  18. 정창모, 1993, A Kinetic Study for Selective Catalytic Reduction of NO by $NH_3$, 포항공과대학교 대학원 석사학위논문, 6-11pp.
  19. Muzio, L. J., J. K. Arand and D. P. Teixeira, 1977, Gas phase decomposition of NO in combustion products, Proceedings of the Combistion Institute, 16, 199-208.
  20. Kasuya, F., P. Glarborg, J. E. Johnsson and K. Dam-Johansen, 1995, The Thermal DeNOx process: influence of partial pressures and temperature, Chem. Eng. Sci., 50(9), 1455-1466. https://doi.org/10.1016/0009-2509(95)00008-S