Heterogeneous catalysis, where the reagents are either contained in a liquid medium, or are liquids in their own right, plays a significant part of the chemical industry. These catalysts typically utilise a porous solid support or framework within which the active metal catalyst particles are embedded, and the liquid is so confined in the same pores. Probing the kinetics of the underlying reaction(s) in such systems is key to designing new and improved catalysts, but few experimental techniques are able to prove the confined liquid.We have recently shown that neutron scattering can reveal the kinetics of the underlying processes. However, in our proof-of-principle study liquid only existed in the pores of the material, whereas in the real process an excess of liquid would be present. We therefore aim to further our understanding by repeating the study under an excess of liquid.