Abstract
In order to reproducibly prepare MnO 2 samples for use in mild oxidation of organic substances, three different types of zeolites have been applied as supports for ‘active MnO 2’. After ion-exchanging the Y-FAU, MOR and 4A zeolites with MnSO 4 solutions, MnO 2 was formed by oxidation with KMnO 4. Part of the sample was exchanged again with KCl to eliminate residual Mn 2+ cations and H + ions from the cationic positions. Allyl alcohol oxidation to acrolein was performed as a test reaction. Preliminary results show that the Y-type zeolite is the most suitable support, that no acrylic acid is formed, and that the double bond is preserved.
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