BaO-BaF_2 系融体への炭酸ガスの溶解度

概要

論文の詳細を見る
Equilibrium CO_2 partial pressures in the systems BaO-BaCO_3 and BaO-BaCO_3-BaF_2 were measured by using the thermo-balance. The results are summarized as follows, (1) Dissociation of BaCO_3 under P_<CO_2>=1 atm occurs at 1645 K and the temperature decreases with decreasing the partial pressure of CO_2. (2) Interaction parameter on the assumption of regular solution for BaO-BaCO_3 melts changed from -23 kJ/mol at 1598 K to -15 kJ/mol at 1773 K. (3) Gibbs energy of the reaction BaO(melt)+CO_2(g)=BaCO_3(melt)ΔG°is given by the following relation, ΔG°=-0.152T+279(kJ/mol) (4) Assuming that BaO-BaCO_3-BaF_2 melts behave as the regular solution, the calculated values of solubility of CO_2 in BaO-BaF_2 melts are fairly in good agreement with measured ones except for those under P_<CO_2>=1 atm.
社団法人日本鉄鋼協会の論文
1992-11-01