Figure 12: The linearly coordinated CO to Pt sites, ( C O L ), peak areas normalised to the higher measured intensity as a function of annealing temperature for Pt, MoPt, and MoPt4 supported on TiO2 catalysts. Initially the samples were exposed to 7% CO/He for 30 min, and then annealing was carried out under He flow over the catalyst. Inset: peak area derivative of Pt/TiO2 TPD curve.