Premium
Simultaneous Trapping of C 2 H 2 and C 2 H 6 from a Ternary Mixture of C 2 H 2 /C 2 H 4 /C 2 H 6 in a Robust Metal–Organic Framework for the Purification of C 2 H 4
Author(s) -
Hao HongGuo,
Zhao YunFeng,
Chen DiMing,
Yu JiaMei,
Tan Kui,
Ma Shengqian,
Chabal Yves,
Zhang ZhiMing,
Dou JianMin,
Xiao ZiHui,
Day Gregory,
Zhou HongCai,
Lu TongBu
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201809884
Subject(s) - ternary operation , adsorption , carboxylate , polymerization , ethylene , molecule , chemistry , analytical chemistry (journal) , materials science , stereochemistry , organic chemistry , catalysis , polymer , computer science , programming language
The removal of C 2 H 2 and C 2 H 6 from C 2 H 4 streams is of great significance for feedstock purification to produce polyethylene and other commodity chemicals but the simultaneous adsorption of C 2 H 6 and C 2 H 2 over C 2 H 4 from a ternary mixture has never been realized. Herein, a robust metal–organic framework, TJT‐100, was designed and synthesized, which demonstrates remarkably selective adsorption of C 2 H 2 and C 2 H 6 over C 2 H 4 . Breakthrough experiments show that TJT‐100 can be used as an adsorbent for high‐performance purification of C 2 H 4 from a ternary mixture of C 2 H 2 /C 2 H 4 /C 2 H 6 (0.5:99:0.5) to afford a C 2 H 4 purity greater than 99.997 %, beyond that required for ethylene polymerization. Computational studies reveal that the uncoordinated carboxylate oxygen atoms and coordinated water molecules pointing towards the pore can trap C 2 H 2 and C 2 H 6 through the formation of multiple C−H⋅⋅⋅O electrostatic interactions, while the corresponding C 2 H 4 –framework interaction is unfavorable.