Synthesis of highly active Cu(I)-Y(III)-Y zeolite and its selective adsorption desulfurization performance in presence o
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ORIGINAL PAPER
Synthesis of highly active Cu(I)‑Y(III)‑Y zeolite and its selective adsorption desulfurization performance in presence of xylene isomers Bo‑Long Jiang1 · Nan Jiang1 · You‑Xin Chang2 Received: 22 May 2020 / Accepted: 7 September 2020 © The Author(s) 2020
Abstract Abstract A bimetal-exchanged NaY zeolite (Cu(I)-Y(III)-Y) with a desirable adsorptive desulfurization (ADS) performance was prepared and characterized by means of X-ray diffraction, specific surface area measurements, X-ray fluorescence spectrometer, X-ray photoelectron spectroscopy, thermal gravity analysis and Fourier transform infrared spectroscopy. The effect of Y(III) ions on ADS in the presence of the xylenes was investigated. Results indicated that the ADS performance of Y(III)-Y is higher than that of most reported CeY. The Y(III)-based Cu(I)-Y(III)-Y demonstrated the higher breakthrough loading than those of reported Ce(III)/Ce(IV)-based transition metal Y zeolites, showing that Y(III) ions play a promoting role in improving the ADS selectivity. For Cu(I)-Y(III)-Y, a new strong S-M interaction (S stands for sulfur, while M stands for metal) active site was formed, which might be caused by the synergistic effect between Cu(I) and Y(III). The Cu(I)-Y(III)Y, which combined the advantages of Cu(I)-Y and Y(III)-Y, is a kind of promising adsorbent. The breakthrough loading decreased in the order of Cu(I)-Y(III)-Y > Y(III)-Y > Cu(I)-Y, and the effect of xylene isomers on the sulfur removal was in the order of ortho-xylene > meta-xylene > para-xylene, which exhibited the same trend with the bond order of xylenes. Keywords Desulfurization · Yttrium · Copper · Y zeolite · Competitive adsorption · Xylenes
1 Introduction As environmental awareness grows, deep and ultra-deep removal of sulfur from fuel has become an important global issue (Wang et al. 2019). Hydrodesulfurization (HDS) is currently the most common desulfurization method used in the industry (Li et al. 2020). However, to achieve deep desulfurization, HDS needs to utilize very severe conditions because aromatic sulfur compounds, such as thiophene and its derivatives, are particularly difficult to treat Edited by Xiu-Qiu Peng Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12182-020-00531-0) contains supplementary material, which is available to authorized users. * Bo‑Long Jiang [email protected] 1
Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao 266000, China
Chongqing Changshou Sino French Water Co. Ltd., Chongqing 404100, China
2
by conventional HDS. Adsorptive desulfurization (ADS) is considered to be an efficient and economic technology for the selective removal of thiophene and its derivatives because of its particular advantages, such as operating under mild conditions, not changing the performance of oil products and environmental friendliness (Subhan et al. 2018a, b; Li et al. 2017; Zu et al. 2020). Y zeolites with well-defined t
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