In this proposal we aim to study the low temperature uptake and dynamics of hydrogen in the interlayer region of partially hydrated pillared clays. There are linked dual motivations for this experiment: (i) understanding the fundamental (quantum) properties of confined molecular hydrogen, and; (ii) the search for improved hydrogen storage materials. In both contexts this present study will complement our ongoing research into graphite intercalates, most notably by giving us access to tuneable galleries in which divalent interlayer cations, such as calcium and magnesium, are able to interact with H2 to give the much sought after strong physisorption regime. This experiment would be an ideal start for our New Facilities User Student, who will start in September 2009.