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1 Wiadomości Chemiczne

1 2003

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Kompleksy metali przejściowych immobilizowane na polimerach, jako katalizatory niektórych reakcji utleniana

Owsik I.A., Kolarz B. N.

Wiadomości Chemiczne

2003

[Z] 57, 1-2

21--42

The survey applies to oxidation reaction of substituent phenols in the presence of catalysts. The transition metal complexes with various types of attached to polymer support ligands were used as these catalysts. Especially, we have paid attention to the hydroquinone oxidation to p-benzoquinone using hydrogen peroxide and atmospheric oxygen in the presence of Cu(II) complexes with ligands containing nitrogen (for example: pirydyl, aminoamidyl or guanidyl groups). Oxidation reactions of substituent phenols proceeds in accordance with Michealis-Menten kinetic in all of described systems. It can preclude neither an influence of support kind applied to the catalyst preparation nor an influence of ligand kind chelating metal ions on oxidation kinetic. The comparison of the oxidation kinetic in several systems showed the domination of polymer-metal complexes over the native metal ions and also over the catalysts being the metal complexes with the low molecular compounds (containing the same ligands as these, which were attached to polymer support).