ABSTRACT
There is evidence that metallic Pt, unlike Ni and Rh, has the ability to isomerizc light hydrocarbons in the presence of hydrogen. To investigate the nature of the active site for isomerization, we have studied the catalytic behavior of well defined Pt surfaces including single crystals as well as small particles of controlled morphology. The morphology of silica supported Pt particles was altered by annealing in a controlled atmosphere. In this paper, we compare the reactivity of Pt single crystals and small particles for the reaction of n-butane with H2.
