Desulfurization of hot coal gas over high-surface-area LaMeOx/MCM-41 sorbents

被引：45
作者：
Liu, B. S. [1 ]
Wan, Z. Y. [1 ]
Zhan, Y. P. [1 ]
Au, C. T. [2 ]
机构：
[1] Tianjin Univ, Dept Chem, Sch Sci, Tianjin 300072, Peoples R China
[2] Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China
来源：
FUEL | 2012年 / 98卷
基金：
中国国家自然科学基金;
关键词：
Hot coal gas; Mesoporous materials; Rare earth oxides; H2S removal; HYDROGEN-SULFIDE REMOVAL; H2S; PERFORMANCE; ADSORPTION; SORPTION; FERRITE; SYNGAS; OXIDES; NI;
D O I：
10.1016/j.fuel.2012.03.048
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
We prepared LaMeOx/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO3/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO3. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H-2-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H2S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (x 10) revealed that the LaFeO3/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：95 / 102
页数：8
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