Thermodynamics of the system NaF-AlF3: Part VII. Non-stoichiometric solid cryolite期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Thermodynamics of the system NaF-AlF3: Part VII. Non-stoichiometric solid cryolite

Authors:

Ernest W. Dewing

Affiliation:

(1) 648, Pimlico Pl., K7M 5T8, is retired Kingston, ON, Canada

Abstract:

Earlier data are recalculated to give the boundaries of the homogeneous field of solid cryolite. The equilibrium constant

$K = x^3 cdot (a_{NaF} )^2 [18(1 - x/3)^2 cdot (1 - x/2)]$

where the composition of the material is (3−x)NaF · AlF₃, is

$log _{10} (K) = - 12,543/T + 5.109$

The activity of NaF, a _NaF, is referred to the solid standard state. The standard Gibbs energy of fusion of stoichiometric cryolite is

Keywords:

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