Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Plasma Catalytic Methane Conversion over Sol-gel Derived Pt/TiO2 Catalyst in a Dielectric-barrier Discharge Reactor

DBD 반응기에서 솔-젤 법으로 제조된 Pt/TiO2 촉매를 이용한 메탄의 플라즈마 전환반응

  • Kim, Seung-Soo (Research Center, Korea Institute of Petroleum Quality)
  • 김승수 (한국석유품질관리원 연구센터)
  • Received : 2007.08.27
  • Accepted : 2007.09.04
  • Published : 2007.10.31
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Abstract

Plasma catalytic methane conversion was carried out in the presence of sol-gel derived $Pt/TiO_2$ catalysts within a dielectric-barrier discharge (DBD) reactor. Plasma-assisted reduction (PAR) was applied to reduce the prepared $Pt/TiO_2$ catalysts in DBD reactor, and prepared catalysts were successively reduced by PAR within 20 min irrespective of the Pt loading and the calcination temperature. The highest methane conversion was 40% when 3 wt% $Pt/TiO_2$ and 5 wt% $Pt/TiO_2$ catalysts were used after calcination at $600^{\circ}C$. The selectivities of light alkanes ($C_2H_6$, $C_3H_8$, $C_4H_{10}$) were highly increased when $Pt/TiO_2$ catalysts were used in DBD reactor.

배리어(dielectric-barrier discharge: DBD) 반응기에서 솔-젤 방법으로 제조한 $Pt/TiO_2$를 넣고 플라즈마 에너지를 사용하여 메탄전환반응 연구를 수행하였다. 제조된 촉매는 기존 금속산화물과는 다른 방법으로 환원을 하였으며, 플라즈마를 사용한 환원방법(plasma-assisted reduction: PAR)이라고 명명하였다. $Pt/TiO_2$ 촉매는 Pt 담지량 및 소성온도에 관계없이 20분 이내에 환원이 완료되었다. 3 wt% $Pt/TiO_2$ 촉매와 5 wt% $Pt/TiO_2$ 촉매를 $600^{\circ}C$에서 소성하여 PAR 방법으로 환원했을 때 메탄의 전환율은 40%로 가장 높았다. DBD 반응기에서 $Pt/TiO_2$ 촉매를 사용하였을 경우 촉매가 없을 때보다 $C_2H_6$, $C_3H_8$와 $C_4H_{10}$과 같은 알칸의 선택성의 매우 높게 나타났다.

Keywords

References

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