Characteristic and Adsorption Desulfurization Performance of Ag–Ce Bimetal Ion-Exchanged Y Zeolite

Characteristic and Adsorption Desulfurization Performance of Ag–Ce Bimetal Ion-Exchanged Y Zeolite

AgY, CeY, and AgCeY zeolites were successfully prepared and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetry–differential thermogravimetry (TG-DTG), and Fourier transform infrared (FT-IR) spectroscopy. The adsorptive desulfurization properties of the...

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Veröffentlicht in:Industrial & engineering chemistry research 2014-09, Vol.53 (37), p.14552-14557
Hauptverfasser: Song, Hua, Cui, Xue-Han, Song, Hua-Lin, Gao, Hui-Jie, Li, Feng
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container_issue 37
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container_title Industrial & engineering chemistry research
container_volume 53
creator Song, Hua
Cui, Xue-Han
Song, Hua-Lin
Gao, Hui-Jie
Li, Feng
description AgY, CeY, and AgCeY zeolites were successfully prepared and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetry–differential thermogravimetry (TG-DTG), and Fourier transform infrared (FT-IR) spectroscopy. The adsorptive desulfurization properties of the adsorbents were evaluated in a fixed-bed unit through different types of model gasoline. The results showed that the AgCeY zeolite has a high desulfurization capacity, similar to that of AgY, and the adsorption affinity for sulfur compounds from model gasoline has the following order: benzothiophene > thiophene. In addition, AgCeY zeolite also has a high selectivity similar to CeY, and the effect on the zeolites for sulfur removal ranks in the following order: pyridine > cyclohexene > toluene. The AgCeY zeolite removes organic sulfur compounds by two types of adsorption modes: π-complexation and direct coordination (S-M) interaction.
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