Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Preparation of Fe/$Al_2O_3$ Granules for Conversion of Syngas to Light Olefins by Fischer-Tropsch Reaction

합성가스에서 경질올레핀 제조를 위한 피셔-트롭시 반응용 구형 철-알루미나 촉매 합성

  • Lee, Dong-Joon (Clean Energy Center, Korea Institute of Science and Technology) ;
  • Jung, Kwang-Deog (Clean Energy Center, Korea Institute of Science and Technology) ;
  • Yoo, Kye-Sang (Department of Chemical Engineering, Seoul National University of Technology)
  • 이동준 (한국과학기술연구원 청정에너지센터) ;
  • 정광덕 (한국과학기술연구원 청정에너지센터) ;
  • 유계상 (서울산업대학교 화학공학과)
  • Received : 2010.02.12
  • Accepted : 2010.03.02
  • Published : 2010.06.10
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Abstract

Fe/$Al_2O_3$ granules with various compositions were prepared by combining sol-gel with oil drop method for Fishcer-Tropsh reaction to produce light olefin from synthesis gas. The granules was characterized and employed as a catalyst in the reaction. The surface area of granules was decreased with increasing Fe concentration. Especially, granule with 1.5 of Al/Fe ratios showed the highest CO conversion. However, the olefin selectivity was hardly affected by Al/Fe ratio. K concentration of granule gave a significant effect on catalytic performance. Initial CO conversion and olefin selectivity were increased with K concentration. However, the catalyst with higher K concentration was deactivated rapidly.

합성가스에서 경질 올레핀을 합성하는 Fishcer-Tropsh 반응을 위하여 다양한 조성을 가지는 구형 철-알루미늄 촉매를 졸-겔 오일법으로 합성하였다. 합성된 구형 촉매를 이용하여 다양한 특성분석 및 반응성능을 측정하였다. 촉매의 비표 면적은 철의 비율이 증가할수록 감소하였고, CO 전환율은 Al/Fe비가 1.5인 촉매가 가장 우수하였다. 올레핀 선택도는 Al/Fe비에 영향을 받지 않았다. 함침법을 이용하여 K를 첨가한 경우 반응특성에 영향을 주었다. 첨가한 K의 농도가 증가할수록 초기 CO 전환율과 올레핀 선택도는 향상됐지만 촉매의 활성도는 급격히 감소하였다.

Keywords

References

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