Microcalorimetry, TPR and XPS studies of acid-base properties of NiCuMgAl mixed oxides using LDHs as precursors

The acidity (only Lewis type) is rather weak and dependant, as the basicity, of the Ni/Cu ratio. The observed heterogeneity of these sites can be related to the heterogeneity of the interactions between the nickel atoms and the other elements.