Cascade adsorptive separation of light hydrocarbons by commercial zeolites  

作　　者：Shanshan Liu Yinlin Chen Bin Yue Yuanxin Nie Yuchao Chai Guangjun Wu Jiangnan Li Xue Han Sarah JDay Stephen PThompson Naijia Guan Sihai Yang Landong Li 

机构地区：[1]School of Materials Science and Engineering,Nankai University,Tianjin 300350,China [2]Department of Chemistry,The University of Manchester,Manchester M139PL,United Kingdom [3]Diamond Light Source,Harwell Science Campus,Oxfordshire OX110DE,United Kingdom [4]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China

出　　处：《Journal of Energy Chemistry》2022年第9期299-305,I0009,共8页能源化学（英文版）

基　　金：supported by the National Natural Science Fund of China(22121005,22025203);the University of Manchester,and Haihe Laboratory of Sustainable Chemical Transformations,Tianjin。

摘　　要：Adsorptive separation of light hydrocarbons by porous solids provides an energy-efficient alternative to state-of-the-art cryogenic distillation.However,an optimal balance between the cost,performance and stability of the sorbent material is yet to be achieved for industrial applications.Here,we report the efficient separation of C2 and C3 hydrocarbons by a faujasite zeolite(Na-X,Si/Al=1.23).A tandem configuration of two fixed-beds packed with Na-X affords complete dynamic separation of the ternary mixture of C_(2)H_(2)/C_(2)H_(4)/C_(2)H_(6)(1/49.5/49.5;v/v/v)under ambient conditions.Pressure-swing desorption on the latter fixed-bed gives ethylene(>99.50%,1.80 mmol g^(-1))and ethane(>99.99%,1.41 mmol g^(-1)).In situ synchrotron X-ray powder diffraction revealed the binding sites for C_(2)H_(2)and C_(2)H_(4)in Na-X.This study highlights the potential application of commercial zeolites for challenging industrial separations.

关 键 词：Zeolites C2 hydrocarbons ETHYLENE Adsorptive separation 

分 类 号：TQ221.211[化学工程—有机化工] TQ424