n-Hexane Isomerization and Aromatization on the Catalysts Derived from Alumina-Supported Pt-Sn Clusters*

Publisher Summary The homogeneous distribution of two metal components on the support surface is very important for high catalytic activities or selectivities of bimetallic catalysts. However, it is difficult to use the conventional preparation method using metal salts as the catalyst precursors to obtain the homogeneity. A method has been tried to prepare the catalysts with high dispersion and homogeneous distribution of Pt and Sn by pyrolysis of well-defined Pt–Sn clusters. In this chapter, the comparative studies of the catalytic properties in n-hexane conversion and cumene hydrocracking using the catalysts derived from different Pt–Sn clusters and the catalysts prepared from H 2 PtCl 6 and SnCl 2 are reported, and the effect of Sn/Pt ratio on the activity and selectivity is discussed. Both the catalysts derived from Pt–Sn clusters exhibited excellent activities in the isomerization and aromatization of n-hexane although their acidities were weaker.