Hydrogen storage clathrates

C.I. Ripmeester, J.A. (2005a). Timing clathrate hydrates for hydrogen storage. Nature, 434, 743-746. 

We have already discussed the technological importance of hydrogen storage materials in Section 7.9, where we looked at clathrate-type organic frameworks in this context. We now return to the subject... 

This study focuses on the potential use of clathrates as a novel hydrogen storage technique. A clathrate, also called a clathrate compound or a cage compound, is a material consisting of a lattice of one type of molecule trapping and containing a second type of molecule. Powell [8] was the first to call such compounds clathrates. In a paper published in the Journal of the Chemical Society. 

Among tens of compounds which are known to form clathrate hydrates with water molecules, the majority form either si or sll, with a few exceptions such as dimethyl ether (DME) forming sH [13]. Since these exceptions are not related to hydrogen storage, they are not described here in detail. The reader is referred to the review of Loveday and Nelmes [14] for further information. Sloan and Koh [9] presented an extensive list of hydrate-forming compounds. 

The theoretical developments for hydrogen storage in molecular clathrates have been discussed extensively by Struzhkin et al. [1]. They explained that the complete theoretical description of hydrogen clathrate hydrates is usually based on a combination of different techniques including density functional theory (DFT) [34], molecular dynamicss (MD) [35], and similar approaches. 

Strobel, T.A., Kim, Y, Koh, C.A., and Sloan, E.D. (2008) Clathrates of hydrogen with application towards hydrogen storage. Proceedings of the 6th International Conference on Gas Hydrates (ICGH 2008), July 6-10, Vancouver, Canada. 

Papadimitriou, N.I., Tsimpanogiannis, IN., Stubos, A.K., Computational approach to study hydrogen storage in clathrate hydrates. Colloids Surfaces A Physicochem. Eng. Asp., 357 (2010) 61-1 i. 

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