BaO-BaF<SUB>2</SUB>系融体への炭酸ガスの溶解度

書誌事項

タイトル別名
  • Solubility of Carbon Dioxide in BaO-BaF<SUB>2</SUB> Melts
  • BaO-BaF2系融体への炭酸ガスの溶解度
  • BaO BaF2ケイ ユウタイ エ ノ タンサン ガス ノ ヨウカイド

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抄録

Equilibrium CO2 partial pressures in the systems BaO-BaCO3 and BaO-BaCO3-BaF2 were measured by using the thermo-balance. The results are summarized as follows, <BR>(1) Dissociation of BaCO3 under PCO<SUB>2</SUB> = 1 atm occurs at 1645 K and the temperature decreases with decreasing the partial pressure of CO2.<BR>(2) Interaction parameter on the assumption of regular solution for BaO-BaCO3 melts changed from -23 kJ/mol at 1598 K to -15 kJ/mol at 1773 K.<BR>(3) Gibbs energy of the reaction BaO (melt) + CO2(g) = BaCO3(melt)ΔG°is given by the following relation, <BR>ΔG°=-0.152T + 279(kJ/mol)<BR>(4) Assuming that BaO-BaCO3-BaF2 melts behave as the regular solution, the calculated values of solubility of CO2 in BaO-BaF2 melts are fairly in good agreement with measured ones except for those under PCO<SUB>2</SUB> = 1 atm.

収録刊行物

  • 鉄と鋼

    鉄と鋼 78 (11), 1666-1673, 1992

    一般社団法人 日本鉄鋼協会

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