文献类型：期刊文献

英文题名：Adsorption desulfurization and weak competitive behavior from 1-hexene over cesium-exchanged Y zeolites (CsY)

作者：Liu, Xiaojuan[1];Yi, Dezhi[1];Cui, Yuanyuan[1];Shi, Li[1];Meng, Xuan[1]

机构：[1]East China Univ Sci & Technol, Res Ctr Petr Proc, Shanghai 200237, Peoples R China

年份：2018

卷号：27

期号：1

起止页码：271

外文期刊名：JOURNAL OF ENERGY CHEMISTRY

收录：;EI(收录号：20173003993673);WOS:【SCI-EXPANDED(收录号:WOS:000425889900027)】；

基金：This work is financially supported by the National Natural Science Foundation of China (No. 21276086).This work was supported by the National Natural Science Foundation of China (No. 21276086).

语种：英文

外文关键词：1-hexene; CsY; Adsorption desulfurization; Thiophene; Mechanism

摘要：The systematic research about the adsorption desulfurization and competitive behavior from 1-hexene over cesium-exchanged Y zeolites has been investigated. The structural properties of the adsorbents were characterized by X-ray diffraction (XRD), N-2 sorption (BET) and thermal analysis (TGA). The effects of calcination temperature, calcination atmosphere, and adsorption temperature were studied by the dynamic and static tests. The competitive adsorption mechanisms between thiophene and 1-hexene were studied by in-situ Fourier transform infrared spectroscopy (in-situ FTIR) and temperature-programmed desorption (TPD). CsY adsorbents exhibited high selectivity for thiophene even when a large amount of olefins exist. In-situ FTIR spectra of thiophene and 1-hexene adsorption indicated that both thiophene and 1-hexene were mainly adsorbed on CsY via p-complexation. The higher desorption activated energy and higher adsorption heat of thiophene than 1-hexene obtained by thiophene-TPD and hexene-TPD has revealed that thiophene is adsorbed more strongly in CsY adsorbents than 1-hexene. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.