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Electron‐Irradiation‐Stimulated Atomic‐Scale Structural Dynamics of the Pentagonal Channel in a Complex MoVTeNbO x Catalyst
Author(s) -
Zhang Wei,
Zhang Bingsen,
Zheng Weitao,
Su Dang Sheng
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500859
Subject(s) - orthorhombic crystal system , atomic units , transmission electron microscopy , catalysis , materials science , scanning transmission electron microscopy , crystallography , nanoscopic scale , oxide , electron beam processing , phase (matter) , octahedron , electron , nanotechnology , chemistry , crystal structure , physics , biochemistry , organic chemistry , quantum mechanics , metallurgy
The complex (Mo,V)‐based multicomponent M1 phase with a characteristic network of pentagonal, hexagonal, and heptagonal channels is the key catalyst for the catalytic oxidation from propane to acrylic acid. Herein, the atomic‐scale structural dynamics in the orthorhombic Mo‐V‐Te‐Nb oxide were probed under electron‐beam stimulation. The recorded in situ scanning transmission electron microscopy images unravel the strong bonding and correlation between the (Mo,V)O 6 octahedra and the central Nb moieties in the pentagonal channels. Such dynamic electron microscopy imaging can pave the way to chemically tailoring structural units of a general catalogue of functional polyoxometalates through applying top‐down electron‐beam probing.