Impregnation preparation of Pt catalysts, the

1 Impregnation preparation of Pt catalysts, the effect of the pre-treatment conditions 

Although Pt catalysts have been and are used extensively in various processes, such as hydrogenation/dehydrogenation, and are usually 

We have applied our Multi-Track reactor, an advanced TAP-like reactor system,to evaluate the number of redox-active Pt surface sites Ptsurf redox) on Pt/AlgOg catalysts as a function of Pt dispersion. The number of redox sites was compared with the total number of sites determined by conventional volumetric CO chemisorption. 

A detailed description of the catalyst preparation and the Multi-Track set-up can be found elsewhere. Before performing titration experiments in Multi-Track, the catalyst (1 wt% Pt on Alumina) was sutgected to two different pre-treatments  

Pre-treatment procedure Ml. After inserting the fresh catalyst into the vacuum system, it was heated up to 573 K at 10 K/min The catalyst 

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