Dimeric Calix[4]resorcinarene-based Porous Organic Cages for CO_(2)/CH_(4) Separation  

作　　者：YANG Miao WANG Wenjing SU Kongzhao YUAN Daqiang 

机构地区：[1]College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,P.R.China [2]State Key Lab of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,P.R.China [3]University of the Chinese Academy of Sciences,Beijing 100049,P.R.China

出　　处：《Chemical Research in Chinese Universities》2022年第2期428-432,共5页高等学校化学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.22071244);the Natural Science Foundation of Fujian Province,China(Nos.2019I0028,2020J05087).

摘　　要：Investigating gas separation by emerging porous organic cage(POC) solids is still on its initial stage. In this work, two novel [2+4] organic cages with distinguished structures have been prepared based on the Schiff-based condensation reaction between tetraformyl-functionalized calix[4]resorcinarene building blocks and xylylenediamine(XDA) isomers. Specifically, the use of para-position XDA affords lantern-shaped cage(CPOC-105) with a medium cavity of ca. 0.526 nm^(3), while the meta-position produces peanut-shaped structure(CPOC-106) with two small cavities of ca. 0.181 nm^(3). Both CPOC-105 and CPOC-106 exhibit high selectivity capture of CO_(2) over CH4 with calculated selectivity coefficients of 4.5 and 3.1, respectively, under ambient conditions, and are capable of separating CO_(2)/CH_(4) mixtures by fixed-bed column breakthrough experiments.

关 键 词：Porous organic cage resorcinarene SELF-ASSEMBLY Gas separation Host-guest interaction 

分 类 号：O647.3[理学—物理化学]