We investigate the reduction of SnO2 and the generation of syngas(H2, CO) using methane(CH4) and hydrogen(H2) 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 H2/CO value of 2, which is known to be most useful as syngas, is obtained.

Abstract
 1. 서 론
 2. 실험 방법
  2.1 SnO2의 환원 공정
  2.2 생성된 가스와 주석의 성분분석
 3. 결과 및 고찰
  3.1 환원 공정
  3.2 생성된 가스와 주석의 성분
 4. 결 론
 References

• 한태양(충남대학교 신소재공학과) | Taeyang Han (Department of Materials Science and Engineering, Chungnam National University)
• 손유한(충남대학교 신소재공학과) | Youhan Sohn (Department of Materials Science and Engineering, Chungnam National University)
• 김상열(㈜에이원엔지니어링) | Sangyeol Kim (A1 Engineering Co. Ltd.)
• 정현철(㈜에이원엔지니어링) | Hyun-Chul Jung (A1 Engineering Co. Ltd.)
• 김현유(충남대학교 신소재공학과) | Hyun You Kim (Department of Materials Science and Engineering, Chungnam National University)
• 이상로(㈜에이원엔지니어링) | San-ro Lee (A1 Engineering Co. Ltd.)
• 한준현(충남대학교 신소재공학과) | Jun Hyun Han (Department of Materials Science and Engineering, Chungnam National University) Corresponding author