Abstract
Oxidation of propylene applying the (C3H6, Pd/H3PO4/Pt, O2) fuel cell system in the gas phase produced acrolein and acrylic acid, the π-allyl type oxidation products. However, addition of H2PdCl4 or HCl to the electrolyte reduced the π-allyl oxidation, but enhanced Wacker type oxidation producing acetone. Direction to either Wacker type or π-allyl type oxidation can easily be controlled electrochemically by applying the fuel cell system in the gas phase.
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