Experimental investigation of aluminum-silica aqueous complexing at 300°C

@article{Salvi1998ExperimentalIO,
  title={Experimental investigation of aluminum-silica aqueous complexing at 300°C},
  author={S. Salvi and G. Pokrovski and J. Schott},
  journal={Chemical Geology},
  year={1998},
  volume={151},
  pages={51-67}
}
  • S. Salvi, G. Pokrovski, J. Schott
  • Published 1998
  • Chemistry
  • Chemical Geology
  • Abstract Equilibrium constants for aqueous Al–Si complexes at 300°C and saturated water vapour pressure (86 bar) were generated experimentally from the difference between the solubility of boehmite in silica-free and silica-bearing solutions. At strongly acidic (pH 4.5) conditions aluminum silica aqueous complexes form according to Al 3+ +H 4 SiO 4 0 =AlH 3 SiO 4 2+ +H + and Al(OH) 4 − +H 4 SiO 4 0 =Al(OH) 3 H 3 SiO 4 − +H 2 O for which the logarithm of the equilibrium constants was found to be… CONTINUE READING
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