Effect of trace oxygen on smelter off-gas reduction desulphurization process over FeSx/γ-Al2O3 catalysts

被引：0
|
作者：
Ge, Tingting [1 ]
Guo, Hui [1 ]
Li, Yuchao [1 ]
Hao, Jinguo [1 ]
Zheng, Yanxia [1 ]
Yang, Lixi [1 ]
Huang, Haofei [1 ]
Wang, Ming [1 ]
Zuo, Cuncun [1 ]
机构：
[1] Shandong Univ Technol, Clean Chem Engn Technol R&D Inst, Sch Chem & Chem Engn, Zibo 255049, Peoples R China
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2024年
基金：
中国国家自然科学基金;
关键词：
active phases; FeSx/gamma-Al2O3; catalysts; oxygen resistance; smelter off-gas; sulphur synthesis; trace oxygen; ELEMENTAL SULFUR; SO2; CO;
D O I：
10.1002/cjce.25551
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Effects of trace oxygen on iron sulphides-supported catalysts (FeSx/gamma-Al2O3) were evaluated through smelter off-gas reduction process for sulphur synthesis. Catalytic performance was evaluated under different oxygen content conditions. The properties of fresh and used catalysts were investigated by means of X-ray diffraction (XRD), thermogravimetry-differential thermal analysis (TG-DTA), X-ray photoelectron spectroscopy (XPS), and elemental analysis and relationships of active phases and activity were analyzed. The relationship between different active crystal crystals (FeSx, FeS2, Fe, FeO, gamma-Fe2O3) and SO2/O-2 adsorption and conversion was investigated. The mechanism of oxygen influence on the FeSx/gamma-Al2O3 surface was given and the lifetime of the catalyst in the reaction atmosphere close to real smelter off-gas after dust and oxygen removal steps containing trace oxygen (0.5 O-2 v/v.%) was explored.
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页数：8
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