Electron-Microscopic Study on the Progress of Reduction of MoO<SUB>3</SUB> Single Crystal (Electron-Microscopic Studies on the Progress of Reduction of Metal Oxides by Hydrogen, 2nd Report)

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  • 三酸化モリブデン単結晶の水素還元過程の電子顕微鏡による研究
  • サン サンカ モリブデンタンケッショウ ノ スイソ カンゲン カテイ ノ デンシ ケンビキョウ ニ ヨル ケンキュウ

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Abstract

Molybdenum trioxide crystals were mounted on the sharply pointed end of a fine tungsten wire and exposed to heated hydrogen gas under about one atmospheric pressure in the specimen-treating adaptor attached to the electron microscope, previously devised by the author and others, and the morphological and chemical changes in a certain chosen region of the specimen were followed by taking micrographs and selected-area electron-diffraction patterns. Many informations on the formation of molybdenum metal particles were obtained. The mechanism of formation of metallic particles is discussed.

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