In this proposal we aim to study the low temperature uptake and dynamics of hydrogen in the interlayer region of partially hydrated pillared Na-laponite clay. There are linked triple motivations for this experiment: (i) understanding the fundamental (quantum) properties of confined molecular hydrogen; (ii) the search for improved hydrogen storage materials, and; (iii) the use of Na-clays in nuclear waste containment where H2 is generated from metal canisters. In these 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 sodium, calcium and magnesium, are able to interact with H2 to give the much sought after strong physisorption regime. This experiment will complement our previous study of Ca-laponite RB920384.