Catalytic wet oxidation of H2S to sulfur on Fe/MgO catalyst

被引:44
作者
Jung, KD
Joo, OS
Cho, SH
Han, SH
机构
[1] Korea Inst Sci & Technol, Seoul, South Korea
[2] Hanyang Univ, Dept Chem, Seoul 133791, South Korea
关键词
wet oxidation; Fe/MgO catalyst; redox reaction; H2S removal capacity;
D O I
10.1016/S0926-860X(02)00450-7
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The room temperature wet catalytic oxidation was conducted in a batch reactor with Fe/MgO catalyst. Fe/MgO catalyst was prepared by the dissolution-precipitation method. XRD and temperature-programmed reductions (TPR) indicate that Fe oxide in the Fe/MgO is finely dispersed in the MgO support. The high H2S removal capacities of Fe/MgO can be explained by the finely dispersed iron oxide MgO. The H2S removal capacities of Fe/MgO are dependent on oxygen partial pressure (1.0 g H2S/g(cat) in air and 2.6g H2S/g(cat) in oxygen). The valence state analysis of Fe/MgO catalyst suggests that the H2S oxidation on Fe/MgO can occur by a redox couple reaction, reducing Fe3+ into Fe2+ by H2S and oxidizing Fe2+ to Fe3+ by O-2. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:235 / 241
页数:7
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