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  Home > JCE Print > Journal of Chemical Education > Issues > 2006  > October  >
In the Laboratory
Easy Synthesis of K–F Zeolite from Kaolin, and Characterization of This Zeolite
Carolina Belver and Miguel Angel Vicente
Departamento de Química Inorgánica, Universidad de Salamanca, Plaza de la Merced, S/N, E-37008 Salamanca, Spain
Cover
October 2006
Vol. 83 No. 10
p. 1541

Abstract
A synthesis of K–F zeolite from kaolin and potassium hydroxide is reported. Hydrothermal conditions are not needed. As kaolin is inert, it is preactivated by calcination to form metakaolin. Alkaline treatment of metakaolin with KOH at 90 °C for 24 hours forms K–F zeolite. The zeolite obtained is characterized by various techniques. The whole process constitutes a good example of laboratory work for advanced courses of inorganic chemistry or for specific courses of solid state chemistry or materials chemistry and illustrates the transformation of natural and common minerals to industrial materials with a high technological added value.
Supplement
Detailed description of the experimental procedure, explanations on purification of clays by dispersion–decantation, application of the powder reflection method to determine mineralogical composition of clay samples, an introduction to the structure and properties of clays and zeolites, results obtained by us, reagents lists, and hazards are available.
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Citation
Belver, Carolina; Vicente, Miguel Angel. J. Chem. Educ. 2006 83 1541.
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Keywords
Hands-On Learning / Manipulatives; Inorganic Chemistry; Interdisciplinary / Multidisciplinary; IR Spectroscopy; Laboratory Instruction; Materials Science; Solid State Chemistry; Solids; Synthesis; Upper-Division Undergraduate; X-ray Crystallography
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History
Created:
Last Updated:
8/23/2006
8/28/2006
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Experiments, laboratory exercises, lecture demonstrations, and other descriptions of the use of chemicals, apparatus, instruments, computers, and computer interfaces are presented in the Journal of Chemical Education as illustrative of new or improved ideas or concepts in chemistry instruction and are directed at qualified teachers. Although every effort is made to assure and encourage safe practices and safe use of chemicals, the Journal of Chemical Education cannot assume responsibility for uses made of its published materials. Many chemicals are hazardous. Precautions for the safe use of hazardous chemicals and directions for their proper disposal are described in the Material Safety Data Sheets and on the labels. We strongly urge all those planning to use materials from our pages to make choices and to develop procedures for laboratory and classroom safety in accordance with local needs and situations.
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