Abstract
The catalytic activity of nickel oxysalts NiCo2O4 NiFe2O4, NiTiO3, NiMoO4, Ni3(PO4)2, with different ionic character of the oxygen bond in the anionic ligand was investigated. The acid–base and redox properties of selected catalysts were studied on the basis of kinetics of isopropyl alcohol conversion. The kinetics of propene oxidation over the catalysts and the activation energy and selectivity of oxidation reactions were determined. Activities of the catalysts in the propene oxidation reaction were compared with their oxidation–reduction and acid–base properties. The influence of the amount and form of chemisorbed oxygen on the propene oxidation pathway was investigated. Over the most active catalysts, the non-destructive propene oxidation towards acrolein is the least selective. Oxysalt catalysts active in oxidation reactions exhibit strong redox properties but direct the process towards destructive oxidation products.
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