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Covalent Post‐Functionalization of Zeolitic Imidazolate Framework ZIF‐90 Membrane for Enhanced Hydrogen Selectivity
Author(s) -
Huang Aisheng,
Caro Jürgen
Publication year - 2011
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.201007861
Subject(s) - zeolitic imidazolate framework , surface modification , selectivity , membrane , covalent bond , imine , metal organic framework , chemistry , covalent organic framework , permeation , imidazolate , ethanolamine , linker , aldehyde , chemical engineering , gas separation , polymer chemistry , organic chemistry , catalysis , adsorption , biochemistry , operating system , computer science , engineering
MOF constrictor : Covalent modification of a ZIF‐90 membrane was achieved by imine condensation of the aldehyde groups of the metal–organic framework (MOF) linker by ethanolamine (see picture). The modification leads to constriction of the pore apertures and prevents unselective permeation through defect pores, thus improving gas separation performance. For a H 2 /CO 2 mixture, selectivity can be increased from 7.3 to 62.5.