폴리머 (Polymer(Korea))

  • 제29권2호
  • /
  • Pages.122-126
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  • 2005
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  • 0379-153X(pISSN)
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  • 2234-8077(eISSN)
한국고분자학회 (The Polymer Society of Korea)
권호 표지

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

Effect of MCM-41 Preparation Methods on the Kinetics of Catalytic Pyrolysis of Linear Low Density Polyethylene

  • 박영권 (서울시립대학교 환경공학부) ;
  • 김주식 (서울시립대학교 환경공학부) ;
  • 전종기 (공주대학교 화학공학부) ;
  • 임정은 (아주대학교 분자과학기술학과) ;
  • 김지만 (성균관대학교 화학과) ;
  • 유경선 (광운대학교 환경공학과)
  • 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)
  • 발행 : 2005.03.01
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초록

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.

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.

키워드

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