Reversible Methane Storage in a Polymer-Supported Semi-Clathrate Hydrate at Ambient Temperature and Pressure

Weixing Wang, Benjamin O. Carter, Christopher L. Bray, Alexander Steiner, John Bacsa, James T. A. Jones, Catherine Cropper, Yaroslav Z. Khimyak, Dave J. Adams, Andrew I. Cooper

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

A key issue regarding the use of clathrates and semi-clathrate hydrates for practical gas storage is the pressure-temperature stability of the material. For many practical applications, the avoidance of cooling, gas overpressure, and mechanical mixing would be very desirable. Here, we show that porous emulsion-templated polymer supports greatly enhance methane uptake kinetics in tetra-iso-amylammonium bromide semi-clathrate hydrates without introducing complex mixing technologies. These systems show unprecedented thermal stability and can be decomposed upon demand to release the gas. Single crystal X-ray structure analysis of the semi-clathrates loaded with methane or krypton were obtained, confirming that the gases are stored in the dodecahedral A' and A'' cages.
Original languageEnglish
Pages (from-to)3810-3815
Number of pages6
JournalChemistry of Materials
Volume21
Issue number16
DOIs
Publication statusPublished - 25 Aug 2009

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