Oxygen exchange at Mo/V mixed oxides: A transient and 18O isotope study under technical conditions
✍ Scribed by Kai Krauß; Alfons Drochner; Michael Fehlings; Jan Kunert; Herbert Vogel
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 303 KB
- Volume
- 177
- Category
- Article
- ISSN
- 1381-1169
No coin nor oath required. For personal study only.
✦ Synopsis
Mo/V mixed oxides have proven themselves to be reliable for the partial oxidation of acrolein to acrylic acid. Methacrolein which is the homologue of acrolein, reacts with clearly worse selectivity and activity on this catalyst system. By means of transient investigations (TP reduction, CP reduction, CP reaction and 18 O-SSITKA) under reaction conditions, it was possible to provide a contribution towards clarifying the oxygen exchange of the Mo/V mixed oxides during the reaction of both aldehydes to the corresponding carboxylic acids. In the case of both aldehydes, an exchange of carbonyl oxygen and solid oxygen occurs on the Mo/V mixed oxide.