Carbon monoxide occurs widely in industry in many roles. It is a feedstock for methanol synthesis and in Fischer-Tropsch chemistry for synthetic petrol and diesel. It is a pollutant from partial combustion of fuel and it is a potent poison of low temperature fuel cells. The metal-to-carbon stretch and deformation modes of adsorbed CO on a catalyst should be very informative as they provide direct information on the adsorbate-catalyst interaction. These modes are difficult to observe by conventional spectroscopy as they occur in the 500-800 cm-1 region, that for a typical catalyst is inaccessible. INS should be able to observe these modes, but to date all INS catalysis experiments have used hydrogenous adsorbates in order to take advantage of the large cross section of 1H.The aim of this proposal is use the enhanced sensitivity of TOSCA to observe the low energy modes of CO on Raney Cu.