高分辨率透射电子显微镜
催化作用
钼
X射线光电子能谱
材料科学
化学工程
晶体结构
透射电子显微镜
纳米技术
结晶学
冶金
化学
生物化学
工程类
作者
Pascale Delporte,Fre ́de ́ric Meunier,Cuong Pham‐Huu,P. Vennéguès,Marc J. Ledoux,J. Guille
标识
DOI:10.1016/0920-5861(94)00166-y
摘要
Controlled reduction of MoO3 can produce different phases of catalytic interest. One of these phases has been considered as being an oxycarbide of molybdenum. Various techniques mainly TEM but also XRD and others have been extensively used to understand the mechanism of formation and the structure of this oxycarbide. Its structure is reminiscent of the MoO3 structure as shown by XRD, but reconstructed by shear planes and the introduction of carbon atoms to fill oxygen vacancies, both blocking the formation of MoO2 the normal product of the slow reduction of MoO3. The HRTEM pictures showed a ‘chevron-like’ arrangement and the electronic microdiffraction a square lattice reminiscent of the (0k0) planes of MoO3.
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