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Carbon Molecular Sieve Membranes Derived from Tröger's Base‐Based Microporous Polyimide for Gas Separation
Author(s) -
Wang Zhenggong,
Ren Huiting,
Zhang Shenxiang,
Zhang Feng,
Jin Jian
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201702243
Subject(s) - membrane , gas separation , polyimide , microporous material , molecular sieve , permeation , pyrolysis , chemical engineering , air separation , materials science , polymer , polymer chemistry , carbon fibers , chemistry , organic chemistry , nanotechnology , composite material , catalysis , oxygen , engineering , biochemistry , layer (electronics) , composite number
Abstract Carbon molecular sieve (CMS)‐based membranes have attracted great attention because of their outstanding gas‐separation performance. The polymer precursor is a key point for the preparation of high‐performance CMS membranes. In this work, a microporous polyimide precursor containing a Tröger's base unit was used for the first time to prepare CMS membranes. By optimizing the pyrolysis procedure and the soaking temperature, three TB–CMS membranes were obtained. Gas‐permeation tests revealed that the comprehensive gas‐separation performance of the TB–CMS membranes was greatly enhanced relative to that of most state‐of‐the‐art CMS membranes derived from polyimides reported so far.