Abstract
The mixed oxides of alumina and magnesia were studied by means of IR spectroscopy. Two free hydroxyl bands were found on the mixed oxides between 3 730 and 3740 cm-1 and at 3680cm-1. Acetone was adsorbed either via hydroxyl groups or forming a carboxylate structure. The wavenumber difference between the free and the perturbed hydroxyl band after the adsorption of acetone was used for estimating the acid strength of the hydroxyl groups. A decrease of the acid strength and an increase of the base strength was found with increasing content of MgO in the mixed oxide. The different bands due to carboxylate structures are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 209-218 |
| Number of pages | 10 |
| Journal | Zeitschrift fur Physikalische Chemie |
| Volume | 129 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1982 |
| Externally published | Yes |
Keywords
- Adsorption of acetone
- Alumina-magnesia
- IR
- Mixed oxides