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Preparation of activated ceria and its desulfurization performance

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Abstract

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/γ-Al2O3, and CeO2 ranged from 250°C to 470°C, 330°C to 550°C, and 350°C to 550°C, 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. O2 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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Authors and Affiliations

  1. National Engineering Laboratory for Vacuum Metallurgy, Key Laboratory of Vacuum Metallurgy for Non-ferrous Metal of Yunnan Province, State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming, 650093, China

    Qing-chun Yu, Yong Deng, Fei Wang, Xiu-min Chen, Bin Yang & Da-chun Liu

  2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China

    Qing-chun Yu, Yong Deng, Fei Wang, Xiu-min Chen, Bin Yang & Da-chun Liu

  3. Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China

    Yue-bin Feng

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  1. Qing-chun Yu
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  2. Yong Deng
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Correspondence to Qing-chun Yu.

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Yu, Qc., Deng, Y., Wang, F. et al. Preparation of activated ceria and its desulfurization performance. Int J Miner Metall Mater 22, 992–997 (2015). https://doi.org/10.1007/s12613-015-1160-5

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  • DOI: https://doi.org/10.1007/s12613-015-1160-5

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