Premium
Microporous Polymers as Potential Hydrogen Storage Materials
Author(s) -
McKeown Neil B.,
Budd Peter M.,
Book David
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700054
Subject(s) - microporous material , polymer , physisorption , monomer , triptycene , hydrogen storage , chemical engineering , materials science , bar (unit) , hydrogen , adsorption , conjugated microporous polymer , polymer science , polymer chemistry , organic chemistry , chemistry , composite material , meteorology , engineering , physics
Abstract Microporous organic polymers offer the possibility of storing hydrogen safely at low temperatures and moderate pressures via physisorption. A range of polymers of intrinsic microporosity (PIMs) have been studied. The best PIM to date is based on a triptycene monomer and takes up 2.7% H 2 by mass at 10 bar/77 K. Hypercrosslinked polymers (HCPs) also show promising performance, particularly at pressures >10 bar. The form of the H 2 isotherm is influenced by the micropore distribution, a higher concentration of ultramicropores (pore size <0.7 nm), as found in PIMs, being associated with enhanced low pressure adsorption. The performance of polymers relative to other microporous materials (carbons and metal‐organic frameworks) is compared and promising methods to enhance the hydrogen uptake of microporous polymers are suggested.