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首页> 外文期刊>Geochemical Journal >Aqueous speciation of zinc chloride in supercritical hydrothermal solutions from 500 to 700 degrees C and 0.5 to 1.0 kb
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Aqueous speciation of zinc chloride in supercritical hydrothermal solutions from 500 to 700 degrees C and 0.5 to 1.0 kb

机译:500至700摄氏度和0.5至1.0 kb的超临界水热溶液中氯化锌的水形态分析

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Aqueous speciation of zinc in 2N chloride solution was determined experimentally at 500 to 700 degrees C and 0.5 to 1.0 kb by monitoring the effect of NaCl on ion exchange equilibria in the system CaTiO3-ZnTiO3-CaCl2-ZnCl2-H2O. The Ca/(Ca + Zn) value of the 2N aqueous chloride solution in equilibrium with both CaTiO3 and ZnTiO3 decreased with the increase of NaCl under all experimental conditions. This is due to the formation of tri-chloro zinc complex. The formation constant of tri-chloro zinc complex was estimated to be 1.1, 2.1 and 2.7 at 500, 600 and 700 degrees C, 1 kb, respectively, and 2.6 at 600 degrees C, 0.5 kb in logarithm. The formation constant of tri-chloro zinc complex increases with increasing temperature and decreasing pressure. This suggests that zinc can be effectively leached from rocks and magmas under higher temperature and lower pressure conditions. [References: 11]
机译:通过监测NaCl对CaTiO3-ZnTiO3-CaCl2-ZnCl2-H2O系统中离子交换平衡的影响,在500至700摄氏度和0.5至1.0 kb的条件下,通过实验确定了2N氯化物溶液中锌的水形态。在所有实验条件下,随着NaCl的增加,与CaTiO3和ZnTiO3平衡的2N氯化物水溶液的Ca /(Ca + Zn)值降低。这是由于形成了三氯锌络合物。三氯锌络合物的形成常数在对数下分别在500、600和700摄氏度(1 kb)下分别为1.1、2.1和2.7,在600摄氏度(0.5 kb)下为2.6。三氯锌配合物的形成常数随温度升高和压力降低而增加。这表明在高温和低压条件下,锌可以有效地从岩石和岩浆中浸出。 [参考:11]

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