화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.19, No.4, 611-616, July, 2002
DOI10.1007/BF02699305  Export Citation
Phase Cooperation of V2O5 and Bi2O3 in the Selective Oxidation of H2S Containing Ammonia and Water
Young-Gu Cho, Byung-Ha Hwang, Dae-Won Park†, Hee-Chul Woo1, and Jong-Shik Chung2
  • Department of Chemical Engineering, Pusan National University, Busan 609-735, Korea
  • 1Department of Chemical Engineering, Pukyung National University, Busan 608-739, Korea
  • 2Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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The selective oxidation of hydrogen sulfide containing excess water and ammonia was studied over vanadium oxide-based catalysts. The investigation was focused on the role of V2O5, and phase cooperation between V2O5 and Bi2O3 in this reaction. The conversion of H2S continued to decrease since V2O5 was gradually reduced by treatment with H2S. The activity of V2O5 was recovered by contact with oxygen. A strong synergistic phenomenon in catalytic activity was observed for the mechanically mixed catalysts of V2O5 and Bi2O3. Temperature-programmed reduction (TPR) and oxidation (TPO) and two bed reaction tests were performed to explain this synergistic effect by the reoxidation ability of Bi2O3.
Keywords:Hydrogen Sulfide;Selective Oxidation;Phase Cooperation;Vanadium Oxide;Bismuth Oxide
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