On the Reconstruction Peculiarities of Sol–Gel Derived Mg2−xMx/Al1 (M = Ca, Sr, Ba) Layered Double Hydroxides
作者： Ligita Valeikiene , Marina Roshchina , Inga Grigoraviciute-Puroniene , Vladimir Prozorovich , Aleksej Zarkov
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摘要: In this study, the reconstruction peculiarities of sol–gel derived Mg2−xMx/Al1 (M = Ca, Sr, Ba) layered double hydroxides were investigated. The mixed metal oxides (MMO) synthesized by two different routes. Firstly, MMO obtained directly heating Mg(M)–Al–O precursor gels at 650 °C, 800 and 950 °C. These reconstructed to (LDHs) in water 50 °C for 6 h (pH 10). Secondly, also LDHs same temperatures. materials characterized using X-ray powder diffraction (XRD) analysis scanning electron microscopy (SEM). Nitrogen adsorption Brunauer, Emmett, Teller (BET) Barrett, Joyner, Halenda (BJH) methods used determine surface area pore diameter differently alkaline earth substituted compounds. It was demonstrated first time that microstructure from showed a “memory effect”.
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