Microporous polymers as potential hydrogen storage materials

McKeown, Neil B., Budd, Peter M. and Book, David 2007. Microporous polymers as potential hydrogen storage materials. Macromolecular Rapid Communications 28 (9) , pp. 995-1002. 10.1002/marc.200700054

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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% H2 by mass at 10 bar/77 K. Hypercrosslinked polymers (HCPs) also show promising performance, particularly at pressures >10 bar. The form of the H2 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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	adsorption; hydrogen; microporous polymers
Publisher:	Wiley Blackwell
ISSN:	1022-1336
Last Modified:	19 Mar 2016 23:12
URI:	https://orca.cardiff.ac.uk/id/eprint/42814

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