Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Activity Comparison According to Prepared Method of Cu-Mn Oxide Catalyst for Toluene Combustion

톨루엔 분해를 위한 구리-망간 산화물 촉매의 제조방법에 따른 활성 비교

  • Published : 2006.03.31
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Abstract

Catalytic combustion of toluene was investigated on the Cu-Mn oxide catalysts prepared by the impregnation(Imp) and the deposition-precipitation(DP) methods. The mixing of copper and manganese has been found to enhance the activity of catalysts. It is then found that catalytic efficiency of the Cu-Mn oxide catalyst prepared by the DP method on combustion of toluene is much higher than that of the Cu-Mn oxide catalyst prepared by Imp method with the same chemical composition. The catalyst prepared by the deposition-precipitation method observed no change of toluene conversion at time on stream during 10 days and at the addition of water vapor. On the basis of catalyst characterization data, it has been suggested that the catalysts prepared by the DP method showed uniform distribution and smaller particle size on the surface of catalyst and then enhanced reduction capability of catalysts. Therefore, we think that the DP method leads on progressive capacity of catalyst and promotes stability of catalyst. It was also presumed that catalytic conversion of toluene on the Cu-Mn oxide catalyst depends on redox reaction and $Cu_{1.5}Mn_{1.5}O_4$ spinel phase acts as the major active sites of catalyst.

함침법과 침적침전법으로 Cu-Mn 산화물 촉매를 제조하여 톨루엔 촉매 분해 반응을 조사하였다. 구리와 망간이 혼합됨으로 촉매활성을 증진 시킬 수 있음을 확인할 수 있었다. 또한 같은 화학적 조성으로 제조된 함침법보다 침적침전법에 의해 제조된 Cu-Mn 산화물 촉매에서 톨루엔 분해 반응 활성이 더 높았다. 침적침전법에 의해 제조된 촉매는 10일간의 장기 분석과 수분 첨가에 의한 톨루엔 분해 효율에 변화가 없었다. 촉매 특성 분석 결과에 기초하여 보면, 침적침전법은 촉매의 표면에 균일한 분산과 작은 크기의 입자를 제공하며 환원 능력을 증진시키는 것으로 판단된다. 따라서 침적침전법은 촉매의 성능을 향상 시키고 촉매의 안정성을 중진 시키는 것으로 생각 된다. 또한 Cu-Mn 산화물 촉매에서 톨루엔 분해 반응은 산화환원 반응에 의존하며 $Cu_{1.5}Mn_{1.5}O_4$ 스피넬 구조가 주요한 촉매 활성점으로 작용하는 것으로 추측된다.

Keywords

References

  1. 이치용, 'VOC 삭감대책의 현상과 과제', http://www.reseat.re.kr, September(2004)
  2. 우완기, '주요 VOC물질의 배출과 제어에 관한 연구', 산업기술연구, pp. 42-77(1999)
  3. 편집부,'VOCs 배출억제 기술의 현상과 전망', 첨단환경기술, pp. 26-35(2004)
  4. Ferreira, R. S. G., Oliveira, P. G. P., Noronha, F. B., 'Characterization on catalytic activity of Pd/$V_2O_5$/$Al_2O_3$ catalysts on benzene total oxidation,' Appl. Catal. B: Environ., 50, 243-249(2004) https://doi.org/10.1016/j.apcatb.2004.01.006
  5. Ihm, S. K., Jun, Y. D., Kim, D. C., Jeong, K. E., 'Low-temperature deactivation and oxidation state of Pd/ ${\gammer}-Al_2O_3$ catalysts for total oxidation of n-hexane,' Catal. Today, 93(95), 149-154(2004) https://doi.org/10.1016/j.cattod.2004.06.096
  6. Cordi, E. M., O'Neill, P. J., Falconer, J. L., 'Transient oxidation of volatile organic compounds on a CuO/$Al_2O_3$ catalyst,' Appl. Catal. B: Environ., 14, 23-36(1997) https://doi.org/10.1016/S0926-3373(97)00009-X
  7. Scire, S., Minico, S., Crisafulli, C, Galvagno, S., 'Catalytic combustion of volatile organic compounds over group IB metal catalysys on $Fe_2O_3$', Catal. Communications, 2, 229-232(2001) https://doi.org/10.1016/S1566-7367(01)00035-8
  8. Lintz, H. G., Wittstock, K., 'Catalytic combustion of solvent containing air on bace metal catalysts,' Catal. Today, 29, 457-461(1996) https://doi.org/10.1016/0920-5861(95)00320-7
  9. Daturi, M, Busca, G., Groppi, G., Forzatti, P., 'Preparation and characterisation of $SrTi_{l-x-y}Zr_xMn_yO_3$ solid solution powders in relation to their use in combustion catalysis,' Appl. Catal. B: Environ., 12, 325-337(1997) https://doi.org/10.1016/S0926-3373(96)00082-3
  10. Kim, S C., 'The catalytic oxidation of aromatic hydrocarbons over supported metal oxide,' J. Hazard. Miter., B91, 285-299(2002)
  11. Wang, C. H., '$Al_2O_3$-supported transition-metal oxide catalysts for catalytic incineration of toluene,' Chemosphere, 55, 11-17(2004) https://doi.org/10.1016/j.chemosphere.2003.10.036
  12. Alvarez-Galvan, M. C, Pawelec, B., Pena O'Shea, V. A., Fierro, J. L. G., Ariad P. L., 'Formaldehyde/methanol combustion on alumina-supported manganese-palladium oxide catalyst,' Appl. Catal. B: Environ., 51, 83-91 (2004) https://doi.org/10.1016/j.apcatb.2004.01.024
  13. Li, W. B., Chu, W. B., Zhuang, M., Hua, J., 'Catalytic oxidation of toluene on Mn-containing mixed oxides prepared on reverse microemulsions,' Catal. Today, 93(95), 205-209(2004) https://doi.org/10.1016/j.cattod.2004.06.042
  14. Zanela, R., Laurent, D., Louis, C., 'Mechanism of deposition of gold precursors onto $TiO_2$ during the preparation by cation adsorption and deposition-precipitation with NaOH and urea,' Appl. Catal. A: General, 291, 62-72(2005) https://doi.org/10.1016/j.apcata.2005.02.045
  15. Xiao, L. H., Sun, K. P., Xu, X. L., Li, X. N., 'Low-temperature catalytic combustion of methane over Pd/ $CeO_2$ prepared by deposition-precipitation method,' Catal. Communications, 6, 796-801(2005) https://doi.org/10.1016/j.catcom.2005.07.015
  16. Khoudiakov, M., Gupta, M. G, Deevi, S., 'Au/$Fe_2O_3$ nano-catalysts for CO oxidation: A comparative study of depo-sitionrprecipitation and coprecipitation techniques,' Appl. Catal. A: General, 291, 151-161(2005) https://doi.org/10.1016/j.apcata.2005.01.042
  17. 천태진, 최성우, 이창섭, '전이금속 산화물 촉매를 이용한 톨루엔 분해', 대한환경공학회지, 27(6), 651-656(2005)
  18. Centeno, M. A., Carrizosa, I., Odrioola, J. A., 'Deposition-presipitation method to obtain supported gold catalysts: dependence of the acid-base properties of the support exemplified in the system $TiO_2-TiO_xN_y-TiN$', Appl. Catal. A: General, 246, 365-372(2003) https://doi.org/10.1016/S0926-860X(03)00058-9
  19. Papavasiliou, J., Avgouropoulos, G., Ioannides, T., 'Steam reforming of methanol over copper-manganese spinel oxide catalyst,' Catal. Communications, 6, 497-501(2005) https://doi.org/10.1016/j.catcom.2005.04.015