Optimisation of the synthesis parameters of mechanochemically prepared CaAl-layered double hydroxide

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21 Citations (Scopus)

Abstract

In this work, not so commonly used methods, manual grinding and milling, were applied in an attempt of preparing phase-pure CaAl-LDH (CaAl-layered double hydroxide). For manual grinding a mortar and a pestle and the components with some added water or NaOH solution were used. Milling was a two-step procedure: dry milling was followed by milling in the presence of minute (and controlled) amount of water. The thus prepared samples were characterised by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). It was proven that even though manual grinding did produce LDH, only mechanochemical energy provided by the two-step milling procedure was able to transform the precursors nearly completely to CaAl-LDH. Optimisation of the milling parameters could reproducibly lead to close-to-phase-pure CaAl-LDH.

Original languageEnglish
Pages (from-to)94-99
Number of pages6
JournalApplied Clay Science
Volume112-113
DOIs
Publication statusPublished - Aug 1 2015

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hydroxide
grinding
Water
Mortar
X ray diffraction analysis
Scanning electron microscopy
mortar
parameter
hydroxide ion
transform
scanning electron microscopy
water
energy

Keywords

  • CaAl-layered double hydroxide
  • Manual grinding
  • Mechanochemical syntheses
  • Optimisation of the synthesis conditions
  • Two-step milling

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

Cite this

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abstract = "In this work, not so commonly used methods, manual grinding and milling, were applied in an attempt of preparing phase-pure CaAl-LDH (CaAl-layered double hydroxide). For manual grinding a mortar and a pestle and the components with some added water or NaOH solution were used. Milling was a two-step procedure: dry milling was followed by milling in the presence of minute (and controlled) amount of water. The thus prepared samples were characterised by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). It was proven that even though manual grinding did produce LDH, only mechanochemical energy provided by the two-step milling procedure was able to transform the precursors nearly completely to CaAl-LDH. Optimisation of the milling parameters could reproducibly lead to close-to-phase-pure CaAl-LDH.",
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author = "Zsolt Ferencz and {\'A}. Kukovecz and Z. K{\'o}nya and P. Sipos and I. P{\'a}link{\'o}",
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AU - Ferencz, Zsolt

AU - Kukovecz, Á.

AU - Kónya, Z.

AU - Sipos, P.

AU - Pálinkó, I.

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N2 - In this work, not so commonly used methods, manual grinding and milling, were applied in an attempt of preparing phase-pure CaAl-LDH (CaAl-layered double hydroxide). For manual grinding a mortar and a pestle and the components with some added water or NaOH solution were used. Milling was a two-step procedure: dry milling was followed by milling in the presence of minute (and controlled) amount of water. The thus prepared samples were characterised by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). It was proven that even though manual grinding did produce LDH, only mechanochemical energy provided by the two-step milling procedure was able to transform the precursors nearly completely to CaAl-LDH. Optimisation of the milling parameters could reproducibly lead to close-to-phase-pure CaAl-LDH.

AB - In this work, not so commonly used methods, manual grinding and milling, were applied in an attempt of preparing phase-pure CaAl-LDH (CaAl-layered double hydroxide). For manual grinding a mortar and a pestle and the components with some added water or NaOH solution were used. Milling was a two-step procedure: dry milling was followed by milling in the presence of minute (and controlled) amount of water. The thus prepared samples were characterised by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). It was proven that even though manual grinding did produce LDH, only mechanochemical energy provided by the two-step milling procedure was able to transform the precursors nearly completely to CaAl-LDH. Optimisation of the milling parameters could reproducibly lead to close-to-phase-pure CaAl-LDH.

KW - CaAl-layered double hydroxide

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