Effect of Sulfur Dioxide Partial Pressure on the Reaction of Iodine, Sulfur Dioxide and Water

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  • ヨウ素，二酸化硫黄および水の反応に対する二酸化硫黄分圧の影響
  • ヨウソ 2サンカ イオウ オヨビ ミズ ノ ハンノウ ニ タイスル 2サンカ イオウ ブンアツ ノ エイキョウ

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Abstract

Effect of sulfur dioxide partial pressure on the reaction of iodine, sulfur dioxide and water, which is a unit reaction in the IS process for thermochemical hydrogen production, was studied experimentally at 323 K under iodine saturation. Quasi-equilibrium state was observed in the presence of sulfur dioxide gas at constant pressure. The composition of the poly-hydriodic acid solution formed was discussed assuming an ideal desulfurization by the reverse reaction of the Bunsen reaction. The value of HI/(HI+H2O) of the desulfurized solution was large at high sulfur dioxide pressure and reached the maximum of 15.7±0.3 mol%.

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