The reaction network in propane oxidation over phase-pure MoVTeNb M1 oxide catalysts

- Phase purity and homogeneity ensure high stability of MoVTeNbOx in C3H8 oxidation.
- The catalyst bears a self-supported active layer in sub-nanometer dimension.
- Higher O2 content in the feed increases the activity without loss of selectivity.
- Oxygen partial pressure affects surface oxidation state and number of active sites.
- Auxiliary steam changes performance by modifying the nature of the active sites.