| 학회 |
한국화학공학회 |
| 학술대회 |
2001년 봄 (04/27 ~ 04/28, 연세대학교) |
| 권호 |
7권 1호, p.237 |
| 발표분야 |
촉매/반응공학 |
| 제목 |
물과 암모니아의 존재하에서 H2S의 선택적 산화반응에 의한 V2O5와 Bi2O3의 상간협동 |
| 초록 |
Hydrogen sulfide in the coke oven gas released from the steel smelting process is scrubbed and concentrated using aqueous ammonia. Concentrated H2S is usually recovered as elemental sulfur by Claus process. However, the separation of ammonia and H2S is not perfect so that remaining queous ammonia stream still contains about 2% H2S. One approach is the selective catalytic oxidation of H2S that can produce elemental sulfur and ammonia thiosulfate (ATS:(NH4)2S2O3). The selective oxidation of hydrogen sulfide containing excess water and ammonia was studied over vanadium oxide based catalysts. The investigation was focused phase cooperation between V2O5 and Bi2O3 in the reaction. Ammonia reacted either with hydrogen sulfide or with sulfur dioxide, produced from the oxidation of hydrogen sulfide. Water vapor promoted the reaction of ammonia and sulfur dioxide. Strong synergistic phenomenon in catalytic activity was observed for the mechanically mixed catalyst of V2O5 and Bi2O3. Temperature programmed reduction (TPR) and oxidation (TPO) analyses were carried out to explain this synergistic effect by oxygen spillover over the boundary between Bi2O3 and V2O5. |
| 저자 |
조영구, 박대광, 황병하, 박대원
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| 소속 |
부산대 |
| 키워드 |
phase cooperation; H2S; Bi2O3; V2O5
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| E-Mail |
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| 원문파일 |
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