Abstract
Some improvements of the Pt Al 2O 3 catalyst caused by such rare earth metals as yttrium and ytterbium were observed in the conversion of methylcyclopentane (MCP) and n-hexane (nC 6). The rare earth metals facilitated the dispersion of ensembles on the catalyst surface, thus favoring aromatization and isomerization. The method of preparation was found to affect the properties of the catalysts, and Pt Al 2O 3 and PtYb Al 2O 3 showed a remarkable difference in activity and selectivity after presulfidation.
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