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Characterization of the Particle Size and the Crystallinity of Certain Minerals by Infrared Spectrophotometry and other Instrumental Methods—I. Investigations on Clay Minerals

Published online by Cambridge University Press:  01 July 2024

J. Hlavay ,
K. Jonas ,
S. Elek  and
J. Inczedy
J. Hlavay
Affiliation:
Veszprem University of Chemical Engineering, Veszprem 8201, Hungary
K. Jonas
Affiliation:
Veszprem University of Chemical Engineering, Veszprem 8201, Hungary
S. Elek
Affiliation:
Veszprem University of Chemical Engineering, Veszprem 8201, Hungary
J. Inczedy
Affiliation:
Veszprem University of Chemical Engineering, Veszprem 8201, Hungary
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Abstract

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Effects of particle size, crystallinity and the amount of the structural water in kaolinites on their infrared spectra, were studied. The samples were ground in a vibrating ball-mill, and infrared and X-ray spectra, as well as thermal and specific surface area measurements, were taken on the initial and ground samples. Changes of the 3705-cm−1 infrared band intensity and of the absorbance ratio of the A 3630/A 3705-cm−1 bands were determined as a function of the grinding time. Correlation functions between the absorption ratio, calculated from the infrared spectra, and the average particle size, as well as between the amorphism, calculated from the X-ray spectra, and the average particle size, were obtained.

Type
Research Article
Information
Clays and Clay Minerals , Volume 25 , Issue 6 , December 1977 , pp. 451 - 456
Copyright
Copyright © Clay Minerals Society 1977

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