Abstract
SOLS of hydrous alumina are generally prepared either by the hydrolysis of aluminium acetate solutions, or by the peptization of freshly precipitated hydrous alumina. Such sols are converted to gels by the addition of a suitable small amount of electrolyte, and the gels so formed are thixotropic at concentrations so low as 1 per cent Al2O31.
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Freundlich and Bircumshaw, Kolloid-Z., 40, 19 (1926); Freundlich, 46, 294 (1928).
Kolloid-Z., 84, 303 (1938).
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JOHNSON, F. An Alumina Hydrogel. Nature 152, 415 (1943). https://doi.org/10.1038/152415a0
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DOI: https://doi.org/10.1038/152415a0
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