Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Synthesis of Carbon Materials from PFO, Byproducts of Naphtha Cracking Process

나프타 분해공정 부산물인 PFO로부터 탄소구조체 합성

  • Lee, Jiyon (Department of Chemical Engineering, Hoseo University) ;
  • Park, Seung-Kyu (Department of Chemical Engineering, Hoseo University)
  • 이지연 (호서대학교 화학공학과) ;
  • 박승규 (호서대학교 화학공학과)
  • Received : 2011.07.21
  • Accepted : 2011.08.16
  • Published : 2011.10.10
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Abstract

Separation of naphthalene from pyrolyzed fuel oil, by product of Naphta cracking process (NCC) process, has been accomplished by the solvent extraction, distillation and purification process. The residual pyrolyzed fuel oil (PFO), called precursor of carbon materials, has been calcined at $300{\sim}800^{\circ}C$ in nitrogen gas to raw pitch. After the treatment of PFO by hexane and methanol, either a flake phased carbon at $350^{\circ}C$ or a carbon sphere at above $400^{\circ}C$ forms. As the calcination temperature increases, the shape of raw pitch changes from the flake phase to the sphere one, and the size of them decreases to several ${\mu}m$. Based on the BET and XRD spectrum, the carbon sphere is classified to a mesophase amorphous carbon with a cubic phase.

나프타 분해 공정에서 필수적으로 발생되는 분해연료유(PFO, pyrolyzed fuel oil)에서 나프탈렌을 재결정해내고 남는 PFO 잔유물을 이용하여 $300{\sim}800^{\circ}C$에서 질소 조건에서 탄소구조체를 합성하여 보았다. PFO를 헥산이나 메탄올로 처리 후 얻은 탄소물질 프리커서를 열처리하면 $350^{\circ}C$에서는 수 십 ${\mu}m$ 크기의 flake 상의 탄소체가 만들어졌으나, $400^{\circ}C$ 이상에서는 수 ${\mu}m$로 크기가 줄며 공 모양의 탄소구조체로 변형되었다. BET와 XRD 스펙트럼에 따르면 공모양으로 합성된 메조상 탄소체는 큐빅상으로 미세 기공인 mesopore가 아직 잘 발달되지 많은 부정형 탄소임을 알려주고있다.

Keywords

Acknowledgement

Supported by : 호서대학교

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