Abstract
I HAVE recently directed attention1 to the complexes which montmorillonite forms with polyhydric alcohols, a subject which has been further discussed in a paper by Bradley2. In these complexes, the alcohol takes the role of water in hydrated montmorillonite, and adsorption depends on polar forces (or secondary valences) only, not on base exchange. For this reason it seemed likely that similar complexes would be formed by halloysite, a clay mineral that is known to exist in hydrated and non-hydrated forms3, but which has practically no base exchange capacity (that Which exists being probably due only to surface adsorption).
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References
MacEwan, D. M. C., Nature, 154, 577 (1944).
Bradley, W. F., J. Amer. Chem. Soc., 67, 975 (1945).
See, for example, Hendricks, S. B., Amer. Min., 23, 295 (1938).
Nagelschmidt, G., "The Mineralogy of Soil Colloids" (Tech. Comm. No. 42, Imperial Bureau of Soil Sci.), 12.
Hendricks, S. B., Amer. Min., 23, 295 (1938).
Gieseking, J. E., Soil Sci., 47, 1 (1939). Hendricks, S. B., J. Phys. Chem., 45, 65 (1941).
Unpublished results.
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MACEWAN, D. Halloysite-organic Complexes. Nature 157, 159–160 (1946). https://doi.org/10.1038/157159b0
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DOI: https://doi.org/10.1038/157159b0
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