Rehydration of dehydrated CaFe-L(ayered)D(ouble)H(ydroxide) followed by thermogravimetry, X-ray diffractometry and dielectric relaxation spectroscopy

V. Bugris, H. Haspel, Á. Kukovecz, Z. Kónya, M. Sipiczki, P. Sipos, I. Pálinkó

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this contribution the rehydration process of a dehydrated CaFe-LDH is described with the combination of thermogravimetric (TG), X-ray diffraction (XRD) and dielectric relaxation spectroscopic (DRS) measurements. Dehydration was followed by TG and the major steps were identified. For studying the rehydration procedure the dehydrated samples were treated in the 6-97% relative humidity range at several preset vapour contents at 298 K. For equilibration 72 h were allowed. Then, the XRD diffractograms and the DRS spectra were registered and the thermal behaviour of the partially rehydrated samples was also studied. From these measurements the various forms of water molecules interacting with the LDH were deduced and their relaxation behaviour in the rehydration procedure is described.

Original languageEnglish
Pages (from-to)26-31
Number of pages6
JournalJournal of Molecular Structure
Volume1044
DOIs
Publication statusPublished - Jul 24 2013

Fingerprint

Dielectric relaxation
X ray diffraction analysis
Thermogravimetric analysis
Spectroscopy
X ray diffraction
Dehydration
Atmospheric humidity
Vapors
Molecules
Water
Hot Temperature

Keywords

  • CaFe-LDH
  • Controlled humidity
  • Dehydration
  • Dielectric relaxation spectroscopy
  • Forms of water-solid interfaces
  • Rehydration

ASJC Scopus subject areas

  • Spectroscopy
  • Analytical Chemistry
  • Inorganic Chemistry
  • Organic Chemistry

Cite this

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title = "Rehydration of dehydrated CaFe-L(ayered)D(ouble)H(ydroxide) followed by thermogravimetry, X-ray diffractometry and dielectric relaxation spectroscopy",
abstract = "In this contribution the rehydration process of a dehydrated CaFe-LDH is described with the combination of thermogravimetric (TG), X-ray diffraction (XRD) and dielectric relaxation spectroscopic (DRS) measurements. Dehydration was followed by TG and the major steps were identified. For studying the rehydration procedure the dehydrated samples were treated in the 6-97{\%} relative humidity range at several preset vapour contents at 298 K. For equilibration 72 h were allowed. Then, the XRD diffractograms and the DRS spectra were registered and the thermal behaviour of the partially rehydrated samples was also studied. From these measurements the various forms of water molecules interacting with the LDH were deduced and their relaxation behaviour in the rehydration procedure is described.",
keywords = "CaFe-LDH, Controlled humidity, Dehydration, Dielectric relaxation spectroscopy, Forms of water-solid interfaces, Rehydration",
author = "V. Bugris and H. Haspel and {\'A}. Kukovecz and Z. K{\'o}nya and M. Sipiczki and P. Sipos and I. P{\'a}link{\'o}",
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T1 - Rehydration of dehydrated CaFe-L(ayered)D(ouble)H(ydroxide) followed by thermogravimetry, X-ray diffractometry and dielectric relaxation spectroscopy

AU - Bugris, V.

AU - Haspel, H.

AU - Kukovecz, Á.

AU - Kónya, Z.

AU - Sipiczki, M.

AU - Sipos, P.

AU - Pálinkó, I.

PY - 2013/7/24

Y1 - 2013/7/24

N2 - In this contribution the rehydration process of a dehydrated CaFe-LDH is described with the combination of thermogravimetric (TG), X-ray diffraction (XRD) and dielectric relaxation spectroscopic (DRS) measurements. Dehydration was followed by TG and the major steps were identified. For studying the rehydration procedure the dehydrated samples were treated in the 6-97% relative humidity range at several preset vapour contents at 298 K. For equilibration 72 h were allowed. Then, the XRD diffractograms and the DRS spectra were registered and the thermal behaviour of the partially rehydrated samples was also studied. From these measurements the various forms of water molecules interacting with the LDH were deduced and their relaxation behaviour in the rehydration procedure is described.

AB - In this contribution the rehydration process of a dehydrated CaFe-LDH is described with the combination of thermogravimetric (TG), X-ray diffraction (XRD) and dielectric relaxation spectroscopic (DRS) measurements. Dehydration was followed by TG and the major steps were identified. For studying the rehydration procedure the dehydrated samples were treated in the 6-97% relative humidity range at several preset vapour contents at 298 K. For equilibration 72 h were allowed. Then, the XRD diffractograms and the DRS spectra were registered and the thermal behaviour of the partially rehydrated samples was also studied. From these measurements the various forms of water molecules interacting with the LDH were deduced and their relaxation behaviour in the rehydration procedure is described.

KW - CaFe-LDH

KW - Controlled humidity

KW - Dehydration

KW - Dielectric relaxation spectroscopy

KW - Forms of water-solid interfaces

KW - Rehydration

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U2 - 10.1016/j.molstruc.2012.10.040

DO - 10.1016/j.molstruc.2012.10.040

M3 - Article

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SP - 26

EP - 31

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

SN - 0022-2860

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