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Preparation of activated ceria and its desulfurization performance

ISSN号：2095-9389
期刊名称：《工程科学学报》
时间：0
分类：O643.36[理学—物理化学;理学—化学] X701.3[环境科学与工程—环境工程]
作者机构：[1]National Engineering Laboratory for Vacuum Metallurgy, Key Laboratory of Vacuum Metallurgy for Non-ferrous Metal of Yunnan Province, State Key Laboratory ofComplex Non-ferrous Metal Resources Clear Utilization, Ktmming 650093, China, [2]Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China, [3]Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China
相关基金：Acknowledgements The authors gratefully acknowledge the finical support from the National Natural Science Foundation of China （Nos. 51264023, 51364020, and U1202271）, the Program for Innovative Research Team in Universities of the Minis- try of Education of China （No. IRT1250）, and the Yun- nan Province Science and Technology Talents （No. 2014HA003）.

作者： Qing-chun Yu[1,2], Yong Deng[1,2], Fei Wang[1,2], Yue-bin Feng[3], Xiu-min Chen[1,2], Bin Yang[1,2], Da-chun Liu[1,2]

关键词：脱硫性能, 氧化铈, 活性, 制备, 傅里叶变换红外光谱, Al2O3, X射线光电子能谱, 扫描电子显微镜, ceria, alumina, impregnation, desulfiwization, sulfur dioxide, sulfates

中文摘要：

激活的 ceria (CeO ₂/-Al₂ 受精准备的 O ₃) 被 X 光检查描绘衍射(XRD ) ，扫描电子显微镜学(SEM ) ，和氢规划温度的减小(TPR ) 。激活的 ceria 的 desulfurization 被 X 光检查光电子光谱学(XPS ) 调查， Fourier 变换红外线的光谱学(英尺红外) ，和 thermogravimetric 分析(TG ) 。结果证明 ceria 能高度在氧化铝的表面上被驱散或结晶。0.1CeO ₂/-Al₂ O ₃, 0.45CeO ₂/-Al₂ O ₃, 和 CeO ₂ 从 250

英文摘要：

Activated ceria （CeO2/γ-Al2O3） prepared by impregnation was characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and hydrogen temperature-programmed reduction （TPR）. The desulfurization of the activated ceria was investigated by X-ray photoelectron spectroscopy （XPS）, Fourier transform infrared spectroscopy （FT-IR）, and thermogravimetric analysis （TG）. The results showed that ceria could be highly dispersed or crystallized on the surface of γ-alumina. The reduction temperatures of 0.1CeO2/γ-Al2O3, 0.45CeO2/7-A1203, and CeO2 ranged from 250℃ to 470℃, 330℃ to 550℃, and 350℃ to 550℃, respectively. The reduction peak temperature of 0.45CeO2/γ-Al2O3 was higher than that of 0.1CeO2/γ-Al2O3, which was consistent with the reduction temperature of CeO2. 02 participated in the reaction between ceria and sulfur dioxide. The desulfurization product was cerium（III） sulfate. The intensity of the hydroxyl band decreased with the formation of sulfate species.

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