Aberration-corrected STEM investigation of the M2 phase of MoVNbTeO selective oxidation catalyst.

The 'M2' phase of the oxidation catalyst MoVNbTeO was studied with an aberration-corrected STEM using HAADF imaging, and three 60 degrees twin orientations were identified. Comparisons between the experimental HAADF images and image simulations suggest that the there are two different Te sites, as has been previously reported; however, there are differences between the structure proposed in DeSanto et al. (2004) Z. Kristogr. 219: 152 and the experimental HAADF images.