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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 16, 2002
Accepted May 21, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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 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

dwpark@pusan.ac.kr

Korean Journal of Chemical Engineering, July 2002, 19(4), 611-616(6), 10.1007/BF02699305

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Abstract

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_x000D_ 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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