Study of the microstructure of amorphous aluminosilicate gel before and after its hydrothermal treatment

Cleo Kosanović, Sanja Bosnar, Boris Subotić, Vesna Svetličić, Tea Mišić, Goran Dražić, K. Havancsák

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Solid phase (gel) separated from freshly prepared sodium aluminosilicate hydrogel as well as during its hydrothermal treatment at 80 °C was analyzed by different methods such as powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential thermal gravimetry (DTG), high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM). Analysis of the obtained results have shown that the freshly prepared gel is mainly composed of disc-shaped primary particles, but also partially or even fully crystalline entities were observed by AFM analysis. AFM analysis of the solids separated from the hydrogel at various stages of its hydrothermal treatment (heating at 80 °C) indicates that the particles of the partially and/or fully crystalline phase are nuclei for further crystallization of zeolite. Although it is assumed that the nuclei have structure of faujasite rather than zeolite A, further growth of zeolite A was readily explained by the fact that regardless of the "structure" of nuclei, the type of zeolite to be formed is determined by the concentrations of silicon and aluminum in the liquid phase of the crystallizing system.

Original languageEnglish
Pages (from-to)177-185
Number of pages9
JournalMicroporous and Mesoporous Materials
Volume110
Issue number2-3
DOIs
Publication statusPublished - Apr 15 2008

Fingerprint

Zeolites
Aluminosilicates
Atomic force microscopy
Gels
atomic force microscopy
gels
Hydrogels
microstructure
Microstructure
nuclei
Hydrogel
Crystalline materials
Gravimetric analysis
High resolution transmission electron microscopy
thermogravimetry
X ray powder diffraction
Particles (particulate matter)
Fourier transform infrared spectroscopy
solid phases
liquid phases

Keywords

  • Aluminosilicate gel
  • Atomic force microscopy
  • Microstructure
  • Nucleation
  • Zeolite A

ASJC Scopus subject areas

  • Catalysis
  • Materials Science(all)

Cite this

Study of the microstructure of amorphous aluminosilicate gel before and after its hydrothermal treatment. / Kosanović, Cleo; Bosnar, Sanja; Subotić, Boris; Svetličić, Vesna; Mišić, Tea; Dražić, Goran; Havancsák, K.

In: Microporous and Mesoporous Materials, Vol. 110, No. 2-3, 15.04.2008, p. 177-185.

Research output: Contribution to journalArticle

Kosanović, Cleo ; Bosnar, Sanja ; Subotić, Boris ; Svetličić, Vesna ; Mišić, Tea ; Dražić, Goran ; Havancsák, K. / Study of the microstructure of amorphous aluminosilicate gel before and after its hydrothermal treatment. In: Microporous and Mesoporous Materials. 2008 ; Vol. 110, No. 2-3. pp. 177-185.
@article{be7594d674e84e56a2793ec8b034766d,
title = "Study of the microstructure of amorphous aluminosilicate gel before and after its hydrothermal treatment",
abstract = "Solid phase (gel) separated from freshly prepared sodium aluminosilicate hydrogel as well as during its hydrothermal treatment at 80 °C was analyzed by different methods such as powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential thermal gravimetry (DTG), high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM). Analysis of the obtained results have shown that the freshly prepared gel is mainly composed of disc-shaped primary particles, but also partially or even fully crystalline entities were observed by AFM analysis. AFM analysis of the solids separated from the hydrogel at various stages of its hydrothermal treatment (heating at 80 °C) indicates that the particles of the partially and/or fully crystalline phase are nuclei for further crystallization of zeolite. Although it is assumed that the nuclei have structure of faujasite rather than zeolite A, further growth of zeolite A was readily explained by the fact that regardless of the {"}structure{"} of nuclei, the type of zeolite to be formed is determined by the concentrations of silicon and aluminum in the liquid phase of the crystallizing system.",
keywords = "Aluminosilicate gel, Atomic force microscopy, Microstructure, Nucleation, Zeolite A",
author = "Cleo Kosanović and Sanja Bosnar and Boris Subotić and Vesna Svetličić and Tea Mišić and Goran Dražić and K. Havancs{\'a}k",
year = "2008",
month = "4",
day = "15",
doi = "10.1016/j.micromeso.2007.06.007",
language = "English",
volume = "110",
pages = "177--185",
journal = "Microporous and Mesoporous Materials",
issn = "1387-1811",
publisher = "Elsevier",
number = "2-3",

}

TY - JOUR

T1 - Study of the microstructure of amorphous aluminosilicate gel before and after its hydrothermal treatment

AU - Kosanović, Cleo

AU - Bosnar, Sanja

AU - Subotić, Boris

AU - Svetličić, Vesna

AU - Mišić, Tea

AU - Dražić, Goran

AU - Havancsák, K.

PY - 2008/4/15

Y1 - 2008/4/15

N2 - Solid phase (gel) separated from freshly prepared sodium aluminosilicate hydrogel as well as during its hydrothermal treatment at 80 °C was analyzed by different methods such as powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential thermal gravimetry (DTG), high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM). Analysis of the obtained results have shown that the freshly prepared gel is mainly composed of disc-shaped primary particles, but also partially or even fully crystalline entities were observed by AFM analysis. AFM analysis of the solids separated from the hydrogel at various stages of its hydrothermal treatment (heating at 80 °C) indicates that the particles of the partially and/or fully crystalline phase are nuclei for further crystallization of zeolite. Although it is assumed that the nuclei have structure of faujasite rather than zeolite A, further growth of zeolite A was readily explained by the fact that regardless of the "structure" of nuclei, the type of zeolite to be formed is determined by the concentrations of silicon and aluminum in the liquid phase of the crystallizing system.

AB - Solid phase (gel) separated from freshly prepared sodium aluminosilicate hydrogel as well as during its hydrothermal treatment at 80 °C was analyzed by different methods such as powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential thermal gravimetry (DTG), high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM). Analysis of the obtained results have shown that the freshly prepared gel is mainly composed of disc-shaped primary particles, but also partially or even fully crystalline entities were observed by AFM analysis. AFM analysis of the solids separated from the hydrogel at various stages of its hydrothermal treatment (heating at 80 °C) indicates that the particles of the partially and/or fully crystalline phase are nuclei for further crystallization of zeolite. Although it is assumed that the nuclei have structure of faujasite rather than zeolite A, further growth of zeolite A was readily explained by the fact that regardless of the "structure" of nuclei, the type of zeolite to be formed is determined by the concentrations of silicon and aluminum in the liquid phase of the crystallizing system.

KW - Aluminosilicate gel

KW - Atomic force microscopy

KW - Microstructure

KW - Nucleation

KW - Zeolite A

UR - http://www.scopus.com/inward/record.url?scp=39849095078&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=39849095078&partnerID=8YFLogxK

U2 - 10.1016/j.micromeso.2007.06.007

DO - 10.1016/j.micromeso.2007.06.007

M3 - Article

AN - SCOPUS:39849095078

VL - 110

SP - 177

EP - 185

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

SN - 1387-1811

IS - 2-3

ER -