Graphene has recently been used very effectively as a catalyst and catalyst support for a range of industrially relevant reactions. The use of graphene alone is significant as it provides the opportunity to replace precious metal catalysts with a more sustainable material. In order to achieve this the activity of the graphene in, for example, hydrogenation reactions needs to be increased; however, currently there is little knowledge about the interaction of hydrogen with the graphene and how it dissociates. This proposal aims to use inelastic neutron scattering to probe this interaction.