Kaolinite: Synthesis at Room Temperature

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Abstract
To obtain kaolinite at low temperature and pressure from the system Si(OH) 4 -Al 3+ -H 2 O, the sixfold coordination of aluminum is a necessary prerequisite. Kaolinite was synthesized at p H values from 2 to 9 and with a ratio of SiO 2 to Al 2 O 3 in solution from 1 to 10 by means of the complexation of Al 3+ and fulvic acid.