ＰｂＣｌ?S２?T‐ＣｄＣｌ?S２?T系蒸気のクヌーセンセルマスフィルタによる熱力学的研究

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  • A thermodynamic study of the PbCl<sub>2</sub>-CdCl<sub>2</sub> system by Knudsen cell-mass filter method
  • PbCl2 CdCl2ケイ ジョウキ ノ クヌーセン セルーマス フィルタ ニ

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Mass spectrometric analysis of the vapor phase of PbCl2-CdCl2 molten salt mixture was performed as a preceeding test for measuring AlCl3 in a molten salt system from the view point of aluminum smelting. The vapor species over CdCl2 and PbCl2 are Cd2Cl4(g) and CdCl2(g), and PbCl2(g) respectively. No heavier species are detected up to 970K. The heat of sublimation and the activities of PbCl2 and CdCl2 were measured over the whole composition range. The PbCl2-CdCl2 melt can be regarded as an ideal solution because of a slightly negative deviation from Raoult's law at 909K. This system is found to be different from the melts of PbCl2 or CdCl2 with alkali chlorides. The activity results are in good agreement with the physicochemical measurements on this system. A CdCl2-Cd metal system was also massspectrometrically examined. The inexpensive mass-filter system will be useful for studying the molten salt systems.

収録刊行物

  • 軽金属

    軽金属 27 (7), 340-347, 1977

    一般社団法人 軽金属学会

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