Analysis of the Degree of Crystallinity of Aluminosilicates of the Kaolinite Subgroup According to the IR Spectroscopy Data

The data of X-ray diffraction and IR spectroscopy of synthetic aluminosilicates of the kaolinite subgroup with different degrees of crystallinity are analyzed. The samples are obtained under hydrothermal conditions in alkaline and neutral media with different durations of synthesis. It is shown that...

Full description

Saved in:
Bibliographic Details
Published in:Glass physics and chemistry 2023-12, Vol.49 (6), p.701-705
Main Authors: Alikina, Yu. A., Golubeva, O. Yu
Format: Article
Language:English
Subjects:
Aluminosilicates
Aluminum silicates
Ceramics
Characteristic X rays
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Crystallinity
Degree of crystallinity
Glass
Hydrothermal treatment
Hydroxyl groups
Infrared spectroscopy
Kaolinite
Materials Science
Natural Materials
Physical Chemistry
Short Communications
Spectra
Spectrum analysis
Subgroups
Synthesis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The data of X-ray diffraction and IR spectroscopy of synthetic aluminosilicates of the kaolinite subgroup with different degrees of crystallinity are analyzed. The samples are obtained under hydrothermal conditions in alkaline and neutral media with different durations of synthesis. It is shown that as the synthesis time increases a gradual transition of the amorphous phase to the crystalline phase is observed, which is reflected in the IR spectra by the shift of the bands related to the oscillations of the groups in the octahedral and tetrahedral grids. The first band of stretching vibrations of hydroxyl groups at 3628 cm –1 appears after three days of hydrothermal treatment in a neutral medium, and under alkaline conditions with the same duration of treatment, two more bands are observed at 3687 and 3668 cm –1 . The detected changes in the IR spectra correspond to the appearance of the characteristic X-ray reflections of halloysite according to the XRD data. Thus, IR spectroscopy can be considered as a method for a qualitative assessment of the degree of crystallinity.
ISSN:1087-6596
1608-313X
DOI:10.1134/S1087659623600746