Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,P.R.China;
Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,P.R.China;
Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou 350207,P.R.China;
Covalent organic framework; Organic molecular sieve membrane; Membrane separation; Microporous material;