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

@inproceedings{Salvi1998ExperimentalIO,
  title={Experimental investigation of aluminum-silica aqueous complexing at 300°C},
  author={Stefano Salvi and Gleb S. Pokrovski and Jacques Schott},
  year={1998}
}
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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