Incorporating SnO2.xH2O into the interlayer spacings of montmorillonite

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Abstract

SnO2.xH2O was incorporated into the silicate layers of Na-montmorillonite (SnO2.xH2O-Mont) via the hydrolysis of (NH4)2SnCl6 in an aqueous slurry of Na-montmorillonite (Mont). The air-dried material and samples treated at various temperatures were characterized by X-ray diffractometry, X-ray fluorescence and infrared spectroscopies, derivatography and BET measurements. It was found that partially hydrated SnO2 was precipitated inside the silicate layers. Upon heat treatment dehydration/dehydroxylation occurred, thus, the strength of hydrogen bonding holding the introduced substance in the layered structure decreased. From 393 K the SnO2 started to migrate onto the outer surface and above 673 K finely dispersed, clay-supported SnO2 was formed.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume244
Publication statusPublished - 1994

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Bentonite
montmorillonite
Clay minerals
Silicates
interlayers
spacing
silicates
Dehydration
dehydration
X ray diffraction analysis
clays
hydrolysis
Infrared spectroscopy
Hydrolysis
Hydrogen bonds
Clay
heat treatment
x rays
infrared spectroscopy
Heat treatment

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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title = "Incorporating SnO2.xH2O into the interlayer spacings of montmorillonite",
abstract = "SnO2.xH2O was incorporated into the silicate layers of Na-montmorillonite (SnO2.xH2O-Mont) via the hydrolysis of (NH4)2SnCl6 in an aqueous slurry of Na-montmorillonite (Mont). The air-dried material and samples treated at various temperatures were characterized by X-ray diffractometry, X-ray fluorescence and infrared spectroscopies, derivatography and BET measurements. It was found that partially hydrated SnO2 was precipitated inside the silicate layers. Upon heat treatment dehydration/dehydroxylation occurred, thus, the strength of hydrogen bonding holding the introduced substance in the layered structure decreased. From 393 K the SnO2 started to migrate onto the outer surface and above 673 K finely dispersed, clay-supported SnO2 was formed.",
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year = "1994",
language = "English",
volume = "244",
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journal = "Molecular Crystals and Liquid Crystals",
issn = "0026-8941",
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TY - JOUR

T1 - Incorporating SnO2.xH2O into the interlayer spacings of montmorillonite

AU - Kiricsi, I.

AU - Pálinkó, I.

AU - Tasi, G.

AU - Hannus, I.

PY - 1994

Y1 - 1994

N2 - SnO2.xH2O was incorporated into the silicate layers of Na-montmorillonite (SnO2.xH2O-Mont) via the hydrolysis of (NH4)2SnCl6 in an aqueous slurry of Na-montmorillonite (Mont). The air-dried material and samples treated at various temperatures were characterized by X-ray diffractometry, X-ray fluorescence and infrared spectroscopies, derivatography and BET measurements. It was found that partially hydrated SnO2 was precipitated inside the silicate layers. Upon heat treatment dehydration/dehydroxylation occurred, thus, the strength of hydrogen bonding holding the introduced substance in the layered structure decreased. From 393 K the SnO2 started to migrate onto the outer surface and above 673 K finely dispersed, clay-supported SnO2 was formed.

AB - SnO2.xH2O was incorporated into the silicate layers of Na-montmorillonite (SnO2.xH2O-Mont) via the hydrolysis of (NH4)2SnCl6 in an aqueous slurry of Na-montmorillonite (Mont). The air-dried material and samples treated at various temperatures were characterized by X-ray diffractometry, X-ray fluorescence and infrared spectroscopies, derivatography and BET measurements. It was found that partially hydrated SnO2 was precipitated inside the silicate layers. Upon heat treatment dehydration/dehydroxylation occurred, thus, the strength of hydrogen bonding holding the introduced substance in the layered structure decreased. From 393 K the SnO2 started to migrate onto the outer surface and above 673 K finely dispersed, clay-supported SnO2 was formed.

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