Dehydroxylation of Kaolinite to Metakaolin - A Molecular Dynamics Study

By Shani Sperinck, P. Raiteri, N. Marks, K. Wright. 2011

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One-part alkali-activated materials : a review (2018, unknown): “For example, for dehydroxylation of the commonly used kaolin into metakaolin (at approximately 600 °C), the main phenomena are the transformation of octahedral Al into tetrahedral Al, structure amorphization, and retaining a 1:1 layer type [151].”
Thermal dehydroxylation of kaolinite under isothermal conditions (2013, background): “However, it is known that the dehydroxylation process in Kaol is accompanied by a change in the aluminium coordination from six- to a mixture of six-, five- and four-fold (Gualtieri and Bellotto, 1998; Leonard, 1977; MacKenzie et al., 1985; Massiot et al., 1995; Rocha and Klinowski, 1990; Sperinck e”
Advances in alkali-activation of clay minerals (2020, background): “fold to a distribution of 5-, 4- and sometimes 3-fold coordination [148–150]; delamination and buckling of the layers occur, caused by Al migration into vacant sites resulting from the loss of the hydroxyl groups [149,150]; and the available surface area decreases [158].”