Atmospheric levels of CO2 are increasing at uncontrolled levels and as such methods of CO2 utilisation are being researched. A key reaction for this purpose is the coupling of CO2 with epoxides to form cyclic carbonates. The authors have shown that silica supported imidazolium halides are highly active catalysts for this reaction. The literature has shown that hydrogen bonding to the epoxide helps to initiate the reaction and we believe that the silanols on the silica surface are responsible for the high activity. The proposed experiment is to perform elastic window scans on a reference silica and four functionalised silica samples with different loadings, each with varying access to surface silanols. An elastic window scan and QENS measurements on each sample will require 24 hours on the IRIS spectrometer so we are asking for 5 days of beamtime.