We propose to measure the vibrational spectra of phenolic lignin monomers phenol and catechol in zeolite Beta, in order to understand further the interactions of these important biomass building blocks with Brønsted Acid sites in promising catalysts for the conversion of biomass to valuable chemicals. Spectral shifting of vibrational bands of both the catalyst Brønsted acid sites and monomer OH groups will be of great value in parameterising classical simulationforcefields, particularly when combined with our DFT calculations, MD simulations and QENS experiments. We therefore aim to learn about important sorbate-catalyst interactions in these promising systems for sustainable chemicals production, while also using our observations to develop computational models of zeolite catalysed biomass conversions which are viable over the nanometre/nanosecond scale