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Energy‐Efficient Hydrogen Separation by AB‐Type Ladder‐Polymer Molecular Sieves
Author(s) -
Ghanem Bader S.,
Swaidan Raja,
Ma Xiaohua,
Litwiller Eric,
Pinnau Ingo
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201401328
Subject(s) - molecular sieve , triptycene , materials science , polymer , air separation , selectivity , monomer , gas separation , hydrogen , chemical engineering , polymerization , polymer chemistry , organic chemistry , catalysis , composite material , chemistry , membrane , oxygen , biochemistry , engineering
Increases in hydrogen selectivity of more than 100% compared with the most selective ladder polymer of intrinsic microporosity (PIM) reported to date are achieved with self‐polymerized A‐B‐type ladder monomers comprising rigid and three‐dimensional 9,10‐dialkyl‐substituted triptycene moieties. The selectivities match those of materials commercially employed in hydrogen separation, but the gas permeabilities are 150‐fold higher. This new polymer molecular sieve is also the most selective PIM for air separation.