Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Reduction of SnO2 by a Mixed Gas of Methane and Hydrogen

메탄과 수소의 혼합 가스에 의한 산화주석의 환원

  • Han, Taeyang (Department of Materials Science and Engineering, Chungnam National University) ;
  • Sohn, Youhan (Department of Materials Science and Engineering, Chungnam National University) ;
  • Kim, Sangyeol (A1 Engineering Co. Ltd.) ;
  • Jung, Hyun-Chul (A1 Engineering Co. Ltd.) ;
  • Kim, Hyun You (Department of Materials Science and Engineering, Chungnam National University) ;
  • Lee, San-ro (A1 Engineering Co. Ltd.) ;
  • Han, Jun Hyun (Department of Materials Science and Engineering, Chungnam National University)
  • 한태양 (충남대학교 신소재공학과) ;
  • 손유한 (충남대학교 신소재공학과) ;
  • 김상열 ((주)에이원엔지니어링) ;
  • 정현철 ((주)에이원엔지니어링) ;
  • 김현유 (충남대학교 신소재공학과) ;
  • 이상로 ((주)에이원엔지니어링) ;
  • 한준현 (충남대학교 신소재공학과)
  • Received : 2018.10.05
  • Accepted : 2018.11.15
  • Published : 2018.12.27
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Abstract

We investigate the reduction of $SnO_2$ and the generation of syngas($H_2$, CO) using methane($CH_4$) and hydrogen($H_2$) or a mixed gas of methane and hydrogen as a reducing gas. When methane is used as a reducing gas, carbon is formed by the decomposition of methane on the reduced Sn surface, and the amount of generated carbon increases as the amount and time of the supply of methane increases. However, when hydrogen is used as a reducing gas, carbon is not generated. High purity Sn of 99.8 % and a high recovery rate of Sn of 93 % are obtained under all conditions. The effects of reducing gas species and the gas mixing ratio on the purity and recovery of Sn are not significantly different, but hydrogen is somewhat more effective in increasing the purity and recovery rate of Sn than methane. When 1 mole of methane and 1 mole of hydrogen are mixed, a product gas with an $H_2/CO$ value of 2, which is known to be most useful as syngas, is obtained.

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