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Optimisation of the synthesis parameters of mechanochemically prepared CaAl-layered double hydroxide
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.
Highlights Synthesis of CaAl-LDH by manual grinding and two-step milling Identifying the optimum synthesis parameters Characterisation of the sample prepared under optimal conditions
Optimisation of the synthesis parameters of mechanochemically prepared CaAl-layered double hydroxide
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.
Highlights Synthesis of CaAl-LDH by manual grinding and two-step milling Identifying the optimum synthesis parameters Characterisation of the sample prepared under optimal conditions
Optimisation of the synthesis parameters of mechanochemically prepared CaAl-layered double hydroxide
Ferencz, Zsolt (author) / Kukovecz, Ákos (author) / Kónya, Zoltán (author) / Sipos, Pál (author) / Pálinkó, István (author)
Applied Clay Science ; 112-113 ; 94-99
2015-04-29
6 pages
Article (Journal)
Electronic Resource
English
Ultrasound-assisted reconstruction and delamination studies on CaAl layered double hydroxides
| Online Contents | 2015