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Abstract
The challenge of storing hydrogen at high volumetric and gravimetric density for automotive applications has prompted investigations into the potential of cryo-adsorption on the internal surface area of microporous organic polymers. A range of Polymers of Intrinsic Microporosity (PIMs) has been studied, the best PIM to date (a network-PIM incorporating a triptycene subunit) taking up 2.7% H(2) by mass at 10 bar/77 K. HyperCrosslinked Polymers (HCPs) also show promising performance as H(2) storage materials, particularly at pressures >10 bar. The N(2) and H(2) adsorption behaviour at 77 K of six PIMs and a HCP are compared. Surface areas based on Langmuir plots of H(2) adsorption at high pressure are shown to provide a useful guide to hydrogen capacity, but Langmuir plots based on low pressure data underestimate the potential H(2) uptake. The micropore distribution influences the form of the H(2) isotherm, a higher concentration of ultramicropores (pore size
Original language | English |
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Pages (from-to) | 1802-1808 |
Number of pages | 7 |
Journal | Physical Chemistry Chemical Physics |
Volume | 9 |
Issue number | 15 |
DOIs | |
Publication status | Published - 1 Jan 2007 |
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Dive into the research topics of 'The potential of organic polymer-based hydrogen storage materials'. Together they form a unique fingerprint.Projects
- 1 Finished
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Polymer-based Hydrogen storage materials.
Engineering & Physical Science Research Council
4/12/06 → 3/06/10
Project: Research Councils