APCATA 372-2010-90

Generation of protonic acid sites from pentane on the surfaces of
Pt/SO42-ZrO2 and Zn/H-ZSM5 evidenced by IR study of adsorbed pyridine

Pyridinium ion was formed from pyridine, which had been bound to Lewis acid sites on Pt/SO4
2-ZrO2
and Zn/H-ZSM5 by contact with pentane vapor. Protonic acid sites were generated on these surfaces by
contact with pentane. The protonic acid sites generated in the presence of pentane were eliminated
when pentane was removed from gas phase. The generation of the protonic acid sites occurred above
350 K for Pt/SO4
2-ZrO2 and above room temperature for Zn/H-ZSM5.