Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 (Autor:in) / Kukovecz, Ákos (Autor:in) / Kónya, Zoltán (Autor:in) / Sipos, Pál (Autor:in) / Pálinkó, István (Autor:in)
Applied Clay Science ; 112-113 ; 94-99
29.04.2015
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Ultrasound-assisted reconstruction and delamination studies on CaAl layered double hydroxides
| Online Contents | 2015