Premium
Crystallographic shear defect in molybdenum oxides: Structure and TEM of molybdenum sub‐oxides Mo 18 O 52 and Mo 8 O 23
Author(s) -
Wang Di,
Su Dangsheng,
Schlögl Robert
Publication year - 2003
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200310018
Subject(s) - molybdenum , high resolution transmission electron microscopy , electron diffraction , molybdenum trioxide , catalysis , transmission electron microscopy , crystallography , crystal structure , materials science , shearing (physics) , diffraction , selected area diffraction , x ray crystallography , chemistry , nanotechnology , metallurgy , optics , physics , composite material , biochemistry
Molybdenum trioxide and molybdenum sub‐oxides are of great interests in catalysis due to their utilities as model system to elucidate the correlations between the structure and the catalytic performance. The suboxides are usually an intermediate phase during catalytic reaction in which the lattice oxygen is involved. We show the identification of the two common molybdenum sub‐oxides Mo 18 O 52 and Mo 8 O 23 , derived from MoO 3 by crystallographic shearing (CS), by means of electron diffraction and High‐Resolution Transmission Electron Microscopy (HRTEM) in combination with image simulation. The coincidence of simulated electron diffraction patterns and high‐resolution images with the experimental ones indicates the feasibility of CS structure determination by these techniques.