화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.34, No.2, 320-327, February, 2017
DOI10.1007/s11814-016-0272-6  Export Citation
Effect of surface composition of Fe catalyst on the activity for the production of high-calorie synthetic natural gas (SNG)
Yong Hee Lee1, and Kwan-Young Lee1, 2, †
  • 1Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Korea
  • 2KU-KIST School of Converging Science & Technology, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Korea
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An Fe2O3 catalyst was applied to the production of high-calorie synthetic natural gas (SNG). With this catalyst, the product distribution changed as the surface composition of the Fe2O3 catalyst changed. The effect of these changes on the catalytic activity was investigated. The active phases of the Fe2O3 catalyst were a mixture of low-carbon FeCx and Fe3C, which was maintained for 10 h, accompanied by the regeneration of Fe3O4. The surface Fe concentration increased after 10 h reaction, and this increased the CO conversion. In addition, the amounts of adsorbed C2H4 and C3H6 increased, which resulted in an increase in carbon chain growth. The surface concentration of oxygen also increased due to the regeneration of Fe3O4, thus reducing the C3H6 adsorption strength; in contrast, C2H4 adsorption increased, resulting in an enhanced paraffin-to-olefin (p/o) ratio for C2 hydrocarbons and reduced p/o ratio for C3 hydrocarbons.
Keywords:Methanation;Fischer-Tropsch;Fe Catalyst;Iron Carbide;Paraffin-to-olefin Ratio
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