Abstract
Fluidizing a free-flowing mixture of clay and concentrated sulfuric acid in a medium of hot air at 150 C yields an active product of high apparent bulk density (ABD) and consequent low oil retention unlike the conventional “wet” method of activation which yields a fluffy clay with high oil retention. Comparative data on bleaching capacity, ABD and oil retention of the products obtained by both methods are given.
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References
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Siddiqui, M. K. Hasnuddin, Brit. Chem. Eng.10, 722 (1965).
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Hasnuddin Siddiqui, M.K. Preparation of high apparent bulk density clays by fluidized activation. J Am Oil Chem Soc 45, 885–887 (1968). https://doi.org/10.1007/BF02540177
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DOI: https://doi.org/10.1007/BF02540177