High Concentrated Toluene Decomposition by Non-thermal Plasma-Photocatalytic (Mn-Ti-MCM-41) Hybrid System

상온 방전 플라즈마-광촉매(Mn-Ti-MCM-41) 복합 시스템에 놓인 고농도 톨루엔의 분해성능

  • Ban, Ji-Young (College of Environment and Applied Chemistry, Kyung Hee University) ;
  • Son, Yeon-Hee (College of Environment and Applied Chemistry, Kyung Hee University) ;
  • Lee, Sung-Chul (College of Environment and Applied Chemistry, Kyung Hee University) ;
  • Kang, Misook (Industrial Liaison Research Institute, Kyung Hee University) ;
  • Choung, Suk-Jin (College of Environment and Applied Chemistry, Kyung Hee University) ;
  • Sung, Joon-Yong (Yonsei Center for Clean Technology, Yonsei University)
  • 반지영 (경희대학교 환경.응용화학대학) ;
  • 손연희 (경희대학교 환경.응용화학대학) ;
  • 이성철 (경희대학교 환경.응용화학대학) ;
  • 강미숙 (경희대학교 산학협력기술연구원) ;
  • 정석진 (경희대학교 환경.응용화학대학) ;
  • 성준용 (연세대학교 CT 연구단)
  • Received : 2005.01.31
  • Accepted : 2005.02.28
  • Published : 2005.06.10

Abstract

This study focused on the decomposition of toluene in a plasma-photocatalytic hybrid system. Hexagonally packed meso-structured Mn-titanosilicates (Mn-Ti-MCM-41), as the photocatalysts, have been prepared by the hydrothermal method. The physical properties of the photocatalysts were characterized using XRD, XPS, TEM, BET/ICP, and $NH_3$/Toluene-TPD. Experiments were carried out at the applied voltage of 9.0 kV and at room temperature of $20^{\circ}C$. In the plasma only system, the activity of the toluene decomposition was higher than that in the photocatalytic system. However, the amount of by-products, such as phenol, $C_2{\sim}C_4$ alkene, was also increased in the plasma only system. However, the by-products decreased remarkably in a plasma-photocatalytic hybrid system. When Mn5mol%-Ti-MCM-41 was used as a photocatalyst in a plasma-photocatalytic hybrid system, the $CO_2$ selectivity in products was increased dramatically compared to other catalysts. It was confirmed that a plasma-photocatalytic hybrid system was better for toluene decomposition compared to photocatalytic and plasma only systems.

Acknowledgement

Supported by : 학술진흥재단

References

  1. Y. S. Won and M. A. Deshusses, J. Korean. Soc. Atmos. Environ., 19, 101 (2003)
  2. T. K. Poddar, S. Maiumdar, and K K Sirkar, J. Membr. Sci., 120, 221 (1996) https://doi.org/10.1016/0376-7388(96)00145-7
  3. Y. S. Won, D. H. Han, T. Stuchinskaya, W. S. Park, and H. S. Lee, Radiat. Phy. Chem., 63, 165 (2002)
  4. C. H. Ao and S. C. Lee, J. Photochern. Photobiol. A-Chem., 161, 131 (2004)
  5. Y. S. Mok, H. W. Lee, Y. J. Hyun, S. W. Ham, M. H. Cho, and I. S. Nam, HWAHAK KONGHAK, 40, 121 (2002)
  6. Y. S. Choi, Y. H. Song, S. J. Kim, and B. U. Kim, HWAHAK KONGHAK, 38, 423 (2000)
  7. B. Y. Lee, S. H. Park, S. C. Lee, M. S. Kang, and S. J. Choung, Catal. Today, 93, 769 (2004) https://doi.org/10.1016/j.cattod.2004.06.069
  8. K.-P. Francke, H. Miessner, and R. Rudolph, Catal. Today, 59, 411 (2000) https://doi.org/10.1016/S0920-5861(00)00306-0
  9. K. Urashima and J. S. Chang, IEEE Trans. Dielectr. Electr. Insul., 7, 602 (2000) https://doi.org/10.1109/94.879356
  10. S. S. Kim, H. Lee, B. K. Na, and H. K. Song, Catal. Today, 89, 193 (2004) https://doi.org/10.1016/j.cattod.2003.11.026
  11. S. Futamura, H. Einaga, H. Kabashima, and Y. H. Lee, Catal. Today, 89, 89 (2004) https://doi.org/10.1016/j.cattod.2003.11.014
  12. U. Roland, F. Holzer, and F.-D. Kopinke, Catal. Today, 73, 315 (2002) https://doi.org/10.1016/S0920-5861(02)00015-9
  13. V. Demidiouk, S. I. Moon, and J. O. Chae, Chem. Commun., 4, 51 (2003)
  14. R. Hippler, S. Pfau, M. Schmidt, and K. H. Schoenbach (Eds.), Low Temperature Plasma Physics: Fundamental Aspects and Applications, WILEY-VCH, 331 (2003)
  15. A. Monnier, F. Scheth, Q. Huo, D. Kumar, D. Dargolese, R. S. Maxwell, G. D. Stucky, P. Petroff, A. Firouzi, M. Janicke, and B. F. Chmelka, Science, 261, 1299 (1993) https://doi.org/10.1126/science.261.5126.1299
  16. J. M. Kim, J. H. Kwak, S. A. Jun, and R. Ryoo, J. Phys. Chem., 99, 16742 (1995) https://doi.org/10.1021/j100045a039
  17. P. Schacht, L. Norena-Franco, J. Ancheyta, S. Ramirez, I. Hernandez-Perez, and L. A. Garcia, Catal. Today, 98, 115 (2004) https://doi.org/10.1016/j.cattod.2004.07.057
  18. T. G. Kang, J. H. Kim, and G. Seo, HWAHAK KONGHAK, 36, 364 (1998)
  19. L. Davydov, E. P. Reddy, P. France, and P. G. Smirniotis, J. Catal., 203, 157 (2001) https://doi.org/10.1006/jcat.2001.3334
  20. D. Kumar, S. Varma, and N. M. Gupta, Catal. Today, 93, 541 (2004) https://doi.org/10.1016/j.cattod.2004.06.002