Estimación de las propiedades termodinámicas de fosfatos minerales a alta y baja temperatura por suma de sus unidades constituyentes

A. La Iglesia

doi:10.3989/egeol.39849.060

Autores/as

A. La Iglesia Instituto de Geología Económica, CSIC. Facultad de Ciencias Geológicas, Universidad Complutense. Madrid

DOI:

https://doi.org/10.3989/egeol.39849.060

Palabras clave:

Energía libre de Gibbs, Entalpía, Fosfatos minerales, Propiedades termodinámicas

Resumen

Usando el modelo de unidades poliédricas de Hazen, y empleando un método de ajuste por mínimos cuadrados, se ha calculado la contribución de diecinueve unidades constituyentes a la energía libre y de otras quince unidades a la entalpía de los fosfatos minerales en condiciones termodinámicas normales (298 °K de temperatura y 1 bar de presión) y a altas temperaturas (400-1.000 °K).

Con los valores de gi y hi calculados por este método se puede estimar las propiedades termodinámicas de cualquier fosfato mineral con mayor precisión que la conseguida hasta ahora por otros métodos.

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Citas

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