Fundamental Researches on Smelting of Sulphide Ores. III : On the Equilibrium in the Reduction of Solid Silver Sulphide by Hydrogen Gas

スポンサーリンク

概要

• 論文の詳細を見る

• The equilibrium in the reduction of solid silver sulphide by hydrogen gas was studied by the flow method over the temperature range 487〜775℃. The equilibrium constant and the standard free energy change in the reaction were established as a function of temperature as follows : Ag_2S(β)+H_2=2Ag+H_2S ; log Kp=73.9/T-0.763, 〓F°=-338 +3.490T. By combining the equations with those of formation of hydrogen sulphide gas, the following equations with regard to the dissociation of solid silver sulphide were obtained : 2Ag_2S(β)=4Ag+S_2 ; log P_<S_2>=-9, 238/T+3.574, 〓F°= 42, 260-16.347T. And also using these results and other known thermodynamical data, the heat change and the standard free energy change of formation of solid silver sulphide from the elements were calculated. 2Ag+S(r)=Ag_2S(a) ; 〓H298.1=-9, 033, 〓F°298.1=-10, 515.

• 東北大学の論文

著者

• SUDO Kingo

  The Research Institute of Mineral Dressing and Metallurgy

関連論文

• Fundamental Researches on Smelting of Sulphide Ores. XI : On the Equilibria in the Reductions of Solid Nickel Sulphides by Hydrogen Gas
• On the Dissociation Pressures of Germanium Sulfides
• Fundamental Researches on Smelting of Sulphide Ores. I : Experimental Apparatus and Method of Measurement
• Fundamental Studies on Uranium Oxides. I : Equilibria among UO_2, U_4O_9 and U_3O_8 at 360〜580℃
• Studies on Treatment of Uranium Ores. I : Leaching of Uranium Ore from the Matsuiwa Mine
• Studies on Treatment of Uranium Ores. II : Recovery of Uranium from Leach Liquors of a Uranium Ore from the Matsuiwa Mine
• Fundamental Studies on Uranium Oxides. II : Equilibria among UO_2, U_4O_9 and U_3O_8 at 500〜1, 200℃
• On the Dissociation Pressure of Pyrite
• Fundamental Researches on Smelting of Sulphide Ores. IV : On the Equilibrium in the Reduction of Solid Lead Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. IX : On the Equilibrium in the Reduction of Sulphur in Molten Tin by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. VIII : On the Equilibrium in the Reduction of Solid Stannous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. VI : On the Equilibrium in the Reduction of Solid Cuprous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. X : On the Equilibrium in the Reduction of Sulphur in Molten Lead by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. V : On the Equilibrium in the Reduction of Solid Cobaltous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. VII : On the Equilibrium in the Reduction of Copper Sulphide in Molten Copper by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. III : On the Equilibrium in the Reduction of Solid Silver Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. II : On the Equilibrium in the Reduction of Solid Ferrous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. XIV : On Molten Copper Sulphide

もっと見る 閉じる

スポンサーリンク