Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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NO Gas Sensor with Enhanced Sensitivity Using Activated Carbon Prepared from Pyrolysis Fuel Oil and Polyethylene Terephthalate

열분해 연료유 및 PET 기반 활성탄을 이용한 NO 가스 센서의 감도 향상 연구

  • Kwak, Cheol Hwan (C1 Gas & Carbon Convergent Research, Korea Research Institute of Chemical Technology (KRICT)) ;
  • Seo, Sang Wan (C1 Gas & Carbon Convergent Research, Korea Research Institute of Chemical Technology (KRICT)) ;
  • Kim, Min Il (C1 Gas & Carbon Convergent Research, Korea Research Institute of Chemical Technology (KRICT)) ;
  • Im, Ji Sun (C1 Gas & Carbon Convergent Research, Korea Research Institute of Chemical Technology (KRICT)) ;
  • Kang, Seok Chang (C1 Gas & Carbon Convergent Research, Korea Research Institute of Chemical Technology (KRICT))
  • 곽철환 (한국화학연구원 C1가스.탄소융합연구센터) ;
  • 서상완 (한국화학연구원 C1가스.탄소융합연구센터) ;
  • 김민일 (한국화학연구원 C1가스.탄소융합연구센터) ;
  • 임지선 (한국화학연구원 C1가스.탄소융합연구센터) ;
  • 강석창 (한국화학연구원 C1가스.탄소융합연구센터)
  • Received : 2020.12.18
  • Accepted : 2020.12.31
  • Published : 2021.02.10
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Abstract

In this study, a sensor for detection of nitric oxide (NO) gas was developed using petroleum pitch-based activated carbon which was synthesized from pyrolysis fuel oil (PFO). Polyethylene terephthalate (PET) was added to increase molecular weight by stimulating a polymerization of components in PFO during the pitch synthesis process. The increase in the molecular weight of pitch contributed to the improvement of textural properties of activated carbon, such as the specific surface area and micropore volume. It also enhanced the sensitivity of NO gas sensor based on the activated carbon. In addition, the effect of PET addition during the pitch synthesis on the surface oxygen content and conductivity of activated carbon was investigated. Finally, the correlation of the sensitivity with physical properties of activated carbon was analyzed.

본 연구에서는 열분해 연료유를 이용하여 석유계 피치 기반 활성탄을 제조하였고, 이를 활용하여 일산화질소 가스 검출 센서를 개발하였다. 피치의 분자량 증가를 위해 피치 합성 시 중합 반응을 촉진시키는 폴리에틸렌 테레프탈레이트를 첨가하였다. 피치의 분자량 증가는 피치 기반 활성탄의 비표면적 및 미세기공 부피 증가에 기여하였고, 이는 활성탄 기반 센서의 일산화질소 가스 검출 특성 향상시켰다. 또한 테레프탈레이트 첨가 피치를 사용할 때 활성탄의 표면 산소 관능기 및 전도성 변화를 확인하고 테레프탈레이트 첨가가 활성탄의 물성 및 일산화질소 가스 검출 특성에 미치는 영향을 분석하였다.

Keywords

References

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