Dehydrogeno-aromatization of cyclohexanes with suspended noble-metal catalysts

Abstract

Under boiling and refluxing conditions, suspended noble-metal catalysts produced selective dehydrogeno-aromatization of cyclohexanes, yielding aromatic compounds and molecular hydrogen with Pt being more active than Ru. The retardation effects caused by aromatic compounds being present in the solution were ascribed not only to active-site occupation but also to hydrogen transfer, which consumed the surface hydrogen species as the precursor of molecular hydrogen.