Enhanced selective catalytic wet oxidation of H2S to S over Ce-Fe/MgO catalysts at ambient temperature

被引：12

作者：

Liu, Bo-Tau ^{[1
]}

Hsieh, Chan-Chih ^{[1
]}

机构：

[1] Dept ROC, Tainan, Taiwan

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2018年 / 89卷

关键词：

H2S; Selective wet catalytic oxidation; Ce-Fe/MgO; Elemental sulfur; Ambient temperature; HYDROGEN-SULFIDE; IRON-OXIDE; ELEMENTAL SULFUR; REMOVAL; PERFORMANCE; REDUCTION; GAS; XPS; MN; FE;

D O I：

10.1016/j.jtice.2018.04.023

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the study we prepare novel MgO supported magnetic Ce-Fe catalysts for selective catalytic wet oxidation of H2S to elemental sulfur at ambient temperature. Characterization of the MgO supported Ce-Fe catalysts and the corresponding catalytic activity for H2S removal were analyzed and evaluated. Compared to the MgO supported Fe catalysts, the Ce incorporation increases significantly catalytic activity for H2S removal due to the oxidation of Fe2+ to Fe3+ improved by the redox couple Ce4+/Ce3+. Besides, we also found that the Ce incorporation reduced sulfates and sulfur deposited on the surface of the catalysts. Under high oxygen atmosphere, contaminants are almost not formed on the surface of the Mg supported Ce-Fe catalysts, extending their lifetime. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：113 / 118

页数：6

共 40 条

[1] STUDIES OF SUPPORTED OXIDE CATALYSTS IN THE DIRECT SELECTIVE OXIDATION OF HYDROGEN-SULFIDE [J].