Variación de la energía libre de Gibbs de la caolinita en función de la cristalinidad y tamaño de partícula
DOI:
https://doi.org/10.3989/egeol.89455-6497Keywords:
kaolinite, standard free energy, crystallinity, particle size, solubilityAbstract
The effect of grinding on crystallinity, particle size and solubility of two samples of kaolinite was studied. The standard Gibbs free energies of formation of different ground samples were calculated from solubility measurements, and show a direct relationship between Gibbs free energy and particle size-crystallinity variation. Values of -3752.2 and -3776.4 KJ/mol. were determinated for ΔGºl (am) and ΔGºl (crys) of kaolinite, respectively. A new thermodinamic equation that relates ΔGºl to particle size is proposed. This equation can probably be extended to clay mineals.
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Published
1989-12-30
How to Cite
La Iglesia, A. (1989). Variación de la energía libre de Gibbs de la caolinita en función de la cristalinidad y tamaño de partícula. Estudios Geológicos, 45(5-6), 241–249. https://doi.org/10.3989/egeol.89455-6497
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