Direct imaging of the MoVTeNbO M1 phase using an aberration-corrected high-resolution scanning transmission electron microscope

被引：85

作者：

Pyrz, William D. ^{[1
]}

Blom, Douglas A. ^{[2
,4
]}

Vogt, Thomas ^{[2
,3
]}

Buttrey, Douglas J. ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

[2] Univ S Carolina, NanoCtr, Columbia, SC 29208 USA

[3] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA

[4] Univ S Carolina, Ctr Electron Microscopy, Columbia, SC 29208 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 15期

关键词：

electron microscopy; heterogeneous catalysis; structure elucidation;

D O I：

10.1002/anie.200705700

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Seeing is believing: Aberration-corrected STEM imaging allows direct visualization of the orthorhombic M1 phase primary component of the MoVNbTeO propane ammoxidation catalyst. Atomic coordinates and site occupancies are obtained, and the beam-sensitive Te chains in the hexagonal and heptagonal channels are successfully imaged. These results suggest that HR-HAADF imaging may provide improved starting models for Rietveld analysis of complex structures. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：2788 / 2791

页数：4

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