A new perchlorate-based hybrid ultramicroporous material with rich bare oxygen atoms for high C_(2)H_(2)/CO_(2)separation  

作　　者：Ke Jiang Yuntian Gao Peng Zhang Shiwei Lin Ling Zhang 

机构地区：[1]State Key Laboratory of Marine Resource Utilization in South China Sea,School of Materials Science and Engineering,Hainan University,Haikou 570228,China [2]Key Laboratory of Food Nutrition and Functional Food of Hainan Province,School of Food Science and Engineering,Hainan University,Haikou 570228,China [3]State Key Laboratory of Silicon Materials,Zhejiang University,Hangzhou 310027,China

出　　处：《Chinese Chemical Letters》2023年第8期454-457,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52003069);the Hainan Provincial Natural Science Foundation of China(No.520QN220).

摘　　要：Adsorptive separation of acetylene(C_(2)H_(2))from carbon dioxide(CO_(2))is of great significance in petrochemical industry,but still remains as a daunting challenge by reason of their very similar molecular sizes/shapes and physical properties.Herein,we reported a new perchlorate-based hybrid ultramicroporous material ZJU-194 that features the unique flexible-robust network decorated with rich bare oxygen atoms.By integrating the refined pore space as well as specific binding sites,the activated ZJU-194(ZJU-194a)enables a selective two-step gate-opening adsorption toward C_(2)H_(2),but blocks off the further uptake of CO_(2).It thus exhibits a very high C_(2)H_(2)/CO_(2)selectivity(22.4)at ambient conditions,which is superior to most reported MOF materials.Its complete separation for 50/50 C_(2)H_(2)/CO_(2)mixtures is further evidenced by the dynamic breakthrough experiments.

关 键 词：Porous materials Gas separation Pore chemistry FLEXIBILITY Host-guest interaction 

分 类 号：TQ221.242[化学工程—有机化工] TQ424