Oxidation catalysis over Perovskite-type

Square Concentration Pulses in Oxidation Catalysis over Perovskite-type Oxides of Manganese and Iron... 

Ordering of vacancies also plays a key role in selective oxidation catalysis over perovskite-based catalysts such as CaMnOs oxides. CaMnOs has a CaTiOs (AMO3) perovskite structure which is made up of cations coordinated to 12 0 anions. They, in turn, are connected to corner-sharing MoOe octahedra. CaMnOs was used as a model catalyst on a laboratory scale by Thomas et al (1982) in propene oxidation to benzene and 2-methyl propene to paraxylene. In such reactions the compounds are found to undergo reduction to form anion-deficient metastable phases of the type CaMnOs-x where 0 < x < 0.5, forming several distinct phases. 

Voorhoeve RJH, Remeika JP, Trimble LE. (1976). Defect Chemistry and Catalysis in Oxidation and Reduction over Perovskite-Type Oiddes. Ann Ny AcadSci. 272, 3-21. 

Urasaki, K., Tokunaga, K Sekine, Y. et al. (2008) Production of hydrogen by steam reforming of ethanol over cobalt and nickel catalysts supported on perovskite-type oxides. Catalysis Communications, 9, 600-604. 

---