Phase transformation of molybdenum trioxide to molybdenum dioxide: An in-situ transmission electron microscopy investigation

被引：16
|
作者：
Chen, Jian [1 ]
Wei, Qiang [2 ]
机构：
[1] Natl Res Council Canada NRC, Natl Inst Nanotechnol NINT, Edmonton, AB, Canada
[2] China Univ Petr, State Lab Heavy Oil Proc, Beijing, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2017年 / 14卷 / 05期
关键词：
crystallographic shear plane; molybdenum dioxide; molybdenum trioxide; CRYSTAL-STRUCTURE; MO SUBOXIDES; REDUCTION; CATALYSTS; SHEAR; XRD; XAS;
D O I：
10.1111/ijac.12750
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We use in-situ environmental transmission electron microscopy (ETEM) to investigate the phase transformation of -MoO3 in vacuum. In-situ selected area electron diffraction (SAED) indicates that -MoO3 directly transfers to monoclinic MoO2 without intermediate phase; however, high resolution transmission electron microscopy (HRTEM) study reveals that Mo4O11 precipitates on the surface of MoO2 matrix. Judging from the size of Mo4O11 and its orientation relationship with MoO2, we believe that the formation of Mo4O11 is due to the reaction between MoO2 and the untransformed MoO3.
引用
收藏
页码：1020 / 1025
页数：6
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