Related Experiment Video
Updated: Jul 15, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Multi-component fitting XAFS analysis of molybdate species during catalyst preparation ration by the molten salt
N Matsubayashi1, K Sato, M Imamura
1National Institute of Materials and Chemical Research, Tsukuba, Ibaraki, Japan. nmatsub@nimc.go.jp
Abstract:
The goal of the present study was to elucidate the formation mechanisms of highly dispersed catalysts by the molten salt method. For this purpose, multi-component fitting Mo K-edge EXAFS analysis was applied to the structure of molybdate catalysts prepared in KNO3 and NaNO3. The analysis revealed that MoO3 dissolved in molten salts was at first transformed into polymolybdate anions and finally into MoO(4)2- anions. The transformation into MoO(4)2- anions took place at a lower temperature when NaNO3 was used as molten salt than KNO3. In contrast, polymolybdate anions were stable even at higher temperature when ZrO2 was added as a support of molybdate.
Related Concept Videos
Qualitative Analysis
For instance, group IV...
Washing, Drying, and Ignition of Precipitates
Sample Preparation for Analysis: Advanced Techniques
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...

