文献类型：期刊文献

英文题名：Dechlorination of Reformate via Chemical Adsorption Reactions by Ce-Y Zeolite

作者：Ge, Xianglin[1];Shi, Li[1];Wang, Xin[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：53

期号：15

起止页码：6351

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20141817647474);WOS:【SCI-EXPANDED(收录号:WOS:000334657400012)】；

语种：英文

外文关键词：Pyridine - Ion exchange - Chlorine compounds - Dechlorination - Fourier transform infrared spectroscopy - X ray diffraction - Binary alloys - Positive ions - Temperature programmed desorption - Thermogravimetric analysis - X ray photoelectron spectroscopy - Fluorescence

摘要：In this research, dechlorination of reformate by the catalytic reforming process was investigated over ion-exchanged Y zeolites. Effects of cations, calcination, and reaction temperature on the removal of chloride compounds have been evaluated by performing dynamic tests. The adsorbents were characterized by X-ray diffraction, X-ray fluorescence analysis, thermogravimetric analysis, NH3 temperature-programmed desorption, pyridine Fourier transform infrared (pyridine-FTIR) spectroscopy, and X-ray spectroscopy (XPS). Pyridine-FTIR showed that the type and amount of acidic sites present in zeolites have a significant influence on the dechlorination performance of the zeolites: Bronsted acid contributes to increasing the dechlorination capacity, while excessive Lewis acid has an adverse effect on the dechlorination performance. XPS confirmed that the chemical state of the cation in zeolites affects the dechlorination performance of modified zeolites and cerium in the form of Ce3+ is more favorble for dechlorination.