Mass activity synthesized supports

Table 7.5. Summary of ORR Mass Activities of Various Catalyst Prepared Using USP Synthesized Supports. Activity of Commercial Pl/C Catalyst is Also Given for Comparison...

The next section will describe the experimental techniques we use to synthesize and study clusters and present typical data. The following section will discuss the cluster size sensitive behavior observed in kinetic studies of H-H and C-H bond activation reactions as well as the size sensitive behavior of hydrogen uptake, and discusses the potential implications of these experiments in catalysis and chemisorption. The last section gives the highlights of recent studies of the electronic properties of mass selected, monodispersed, platinum clusters containing up to 6 Pt atoms supported on Si02. 

Carbon nanofiber materials exhibit several advantages with respect to the conventional support materials (i) a high external surface area in a nanometric-scale size which significantly improves the mass transfer, especially in a liquid medium, (ii) a strong interaction generated by the exposed prismatic planes towards the active phase, which can induce peculiar catalytic activities and selectivities. However, to be used in an efficient way the carbon nanofibers should be able to be synthesized on a large scale with a uniform diameter and a low price. From the numerous reviews published on the subject its seems... 

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