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Quantitative determination of phillipsite in tuffs based on its cation-exchange properties

✍ Scribed by J.E. Garcia; M.M. Gonzalez; J.S. Notario; J.M. Caceres

Publisher
Elsevier Science
Year
1993
Weight
391 KB
Volume
19
Category
Article
ISSN
0923-1137

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✦ Synopsis

The applications of zeolite-bearing tuffs depend in a great extent on their zeolite content. A single method to determine phillipsite in association with these materials is proposed. The method is based on the determination of the cation-exchange capacity (CEC), by using 1 M NH4CI as saturating solution of the exchange sites and measuring the NH~-removed by a solution of 1 M KCI. Results have been compared with those obtained by X-ray diffraction using the method of Chung, and also with those obtained by thermogravimetric analysis, according to the method of De'Gennaro and Colella. The results of this study show optimum correlation coefficients between the values of the percentage of phillipsite obtained by X-ray diffraction or thermogravimetric analysis and the CEC.

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