This study reports a simple method to synthesize pure kalsilite (KAlSiO4) using readily available precursors, kaolinite and KOH solution, after only 12 h of hydrothermal treatment in mild conditions. A structural refinement has been carried out using the Rietveld method to obtain unit cell parameters, and the 29Si and 27Al magic angle spinning nuclear magnetic resonance spectra have shown the purity and complete Si/Al ordering of the kalsilite structure obtained. Finally, the morphology of the particles has been analyzed by scanning electron microscopy.
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Document Type: Research Article
Departamento de Química Inorgánica (CSIC-US), Instituto de Ciencia de Materiales de Sevilla, 41092 Sevilla, Spain
Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany
Publication date: October 1, 2009