Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Effect of MCM-41 Preparation Methods on the Kinetics of Catalytic Pyrolysis of Linear Low Density Polyethylene

MCM-41 촉매 합성법이 선형 저밀도 폴리에틸렌의 촉매 열분해 동역학에 미치는 영향

  • Park Young-Kwon (Faculty of Environ, Eng., University of Seoul) ;
  • Kim Joo-Sik (Faculty of Environ, Eng., University of Seoul) ;
  • Jeon Jong-Ki (Department of Chemical Engineering, Kongju National University) ;
  • Lim Jung Eun (Department of Molecular Science & Technology, Ajou University) ;
  • Kim Ji Man (Department of Chemistry, Sungkyunkwan University) ;
  • Yoo Kyung-Seun (Department of Environmental Engineering, Kwangwoon University)
  • 박영권 (서울시립대학교 환경공학부) ;
  • 김주식 (서울시립대학교 환경공학부) ;
  • 전종기 (공주대학교 화학공학부) ;
  • 임정은 (아주대학교 분자과학기술학과) ;
  • 김지만 (성균관대학교 화학과) ;
  • 유경선 (광운대학교 환경공학과)
  • Published : 2005.03.01
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Abstract

The effect of Al-MCM-41 preparation methods on the catalytic degradation of linear low density polyethylene (LLDPE) was investigated. Al-MCM-41 catalysts were synthesized by direct method (Al-MCM-41-D) and post treatment method (Al-MCM-41-P) and their characteristics were elucidated by XRD, BET, $NH_3\;TPD,\;^{27}Al$ MAS NMR. TGA kinetic analysis showed that the catalytic activation energies of Al-MCM-41-D and Al-MCM-41-P were 191.54 and 114.26 kJ/mol, respectively. The higher catalytic activity of Al-MCM-41-P would be attributed to its smaller pore size as well as higher number of acid sites that are accessible.

Al-MCM-41의 제조방법이 선형 저밀도 폴리에틸렌(LLDPE)의 촉매 분해 활성에 어떠한 영향을 주는지 조사하였다 이를 위해 Al-MCM41은 직접 합성법(Al-MCM41-D)과 후처리법(Al-MCM-41-P)의 두 가지 방법으로 제조되었으며, XRD, BET, $NH_3\;TPD,\;^{27}Al$ MAS NMR 등을 이용하여 이들 촉매 특성을 규명하였다. TGA 동역학 방법을 사용하여 Al-MCM-41-D와 Al-MCM-41-P의 LLDPE촉매 분해 활성화 에너지를 구한 결과 각각 197.54, 174.26 kJ/mol로 나타났다. 이처럼 시-MCM-41-P가 시-MCM-41-D보다 촉매 활성이 높은 이유는 접근 가능한 산점수가 훨씬 많고 상대적으로 기공 크기도 작은 것에 기인한 것으로 여겨진다.

Keywords

References

  1. R. Bagri and P. T. Williams, J. Anal. Appl. Pyrolysis, 63, 29 (2002)
  2. H. T. Kim, B. S. Song, C. H. Park, and Y. H. Park, 'The study on the production state and recycling technology of waste mixed plastics', Korea Environments and Recycling Corporation, 1996
  3. D. H. Shin, W. L. Yoon, and I. S. Choi, Polymer Science Technology, 13, 322 (2002)
  4. Y. K. Park, J. S. Kim, J. Choi, J. K. Jeon, S. Kim, S. S. Kim, J. M. Kim, and K. S. Yoo, Kor. J. Kor. Soc. Waste Manage., 20, 566 (2003)
  5. H. J. Yu, B. H. Lee, and D. S. Kim, Polymer(Korea), 27, 84 (2003)
  6. P. T. Williams and H. M. Chishti, J. Anal. Appl. Pyrolysis, 55, 217 (2000)
  7. R. C. Mordi, R. Fields, and J. Dwyer, J. Anal. Appl. Pyrolysis, 29, 45 (1994)
  8. G. Manos, A. Garforth, and J. Dwyer, Ind. Eng. Chem. Res., 39, 1198 (2000)
  9. J. W. Park, J. H. Kim, and G. Seo, Polym. Degrad. Stab., 76, 495 (2002)
  10. R. Bagri and P. T. Williams, J. Anal. Appl. Pyrolysis, 63, 29 (2002)
  11. K. Takuma, Y. Uemichi, and A. Ayame, Appl. Catal. A: General, 192, 273 (2000)
  12. Y. S. You, J. S. Shim, J. H. Kim, and G. Seo, Catal. Lett., 59, 221 (1999)
  13. Y. S. You, J. H. Kim, and G. Seo, Polym. Degrad. Stab., 72, 329 (2001) https://doi.org/10.1016/S0141-3910(00)00160-9
  14. D. W. Park, E. Y. Hwang, J. R. Kim, J. K. Choi, Y. A. Kim, and H. C. Woo, Polym. Degrad. Stab., 65, 193 (1999)
  15. J. M. Kim, J. H. Kwak, S. Jun, and R. Ryoo, J. Phys. Chem, 99, 16742 (1995)
  16. R. Ryoo, S. Jun, J. M. Kim, and M. J. Kim, Chem. Commun., 22, 2255 (1997)
  17. Z. S. Seddegi, U. Budrthwnal, A. A. Al-Arfaj, A. M. Al-Amer, and S. A. I. Barri, Appl. Catal. A: General, 225, 167 (2002)
  18. J. Aguado, J. L. Sotelo, D. P. Serrano, J. A. Calles, and J. M. Escola, Energy Fuels, 11, 1225 (1997)
  19. R. van Grieken, D. P. Serrano, J. Aguado, R. Garca, and C. Rojo, J. Anal. Appl. Pyrolysis, 58-59, 127 (2001)
  20. N. D. Hesse, R. Lin, E. Bonnet, J. Cooper III, and R. L. White, J. Appl. Polym. Sci., 82, 3118 (2001) https://doi.org/10.1002/app.1816
  21. T. Isoda, T. Nakahara, K. Kusakabe, and S. Morooka, Energy Fuels, 112, 1161 (1998)
  22. P. A. Jalil, J. Anal. Appl. Pyrolysis, 65, 185 (2002)
  23. D.P. Serrano, J. Aguado, and J.M. Escola, Ind. Eng. Chem. Res., 39, 1177 (2000)
  24. J. H. Flynn and L. A. Wall, J. Research National Bureau Standards-A. Physics and Chemistry, 70A, 487 (1966)
  25. R. Ryoo and J. M. Kim, J. Chem. Soc., Chem. Commun., 711 (1995)
  26. Y. K. Park, J. S. Kim, J. K. Jeon, and J. M. Kim, Submitted to Polym. Degrad. Stab