【摘要】 <正> 近几年来,Y.塔达等人建立了一种预测化合物吉布斯生成自由能的经验方法的基础是定义一个经验参量△O_M^2-:更多还原

【Abstract】 The authors present an empirical formula calculating Gibbs energies of formation of Al-bearing silicates.It is written as follows:The statistic results show that,for 21 numbers,the relative coefficient between and n1+n2/n1n2 △silicate is-0.980; given △OM2-the standand deviation S=2.7 Kcal/mol.Furthermore the authors think that the formula for calculating Gibbs energies of formation of monovalent and divalent metal silicate,developed by Y.Tandy et al.,can be extended to silicates with high valent cation.Gibbs energies of formation of some minerals have been predicted,such as: Lai-hunite (Pe1.003+ Fe582+ Si96O4)-311.1±4,natrosiderite (NaFeSi2O,)-556.5±4,py-rope (Mg3Al2Si3O12)-1142.4±16.3,Greenlandite (Fe3Al2Si3O12)-1184.1±16.3,Parts-chinite (Mn3Al2Si3O12)-1283.8±16.3,Beryl (Be3Al2Si6O18)-2018.2±21.8 kcal/mol.It is suggested that Y.Tandy et al.’s method can be extended to high temperature condition.For the silicates at 400k and 500k,the empirical formula calculating the Gibbs energies of formation is written:更多还原