The Phyllosiloxides: New Class of Layered Oxides Derived from Natural Phyllosilicates |
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| Authors: | K P Hong G Goglio I Presniakov G Demazeau |
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| Institution: | 1. Interface Hautes Pressions (ENSCPB-ICMCB) , Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux , Avenue Pey Berland, BP 108, Talence cedex, 33402, France E-mail: goglio@icmcb.u-bordeaux.fr;2. Interface Hautes Pressions (ENSCPB-ICMCB) , Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux , Avenue Pey Berland, BP 108, Talence cedex, 33402, France;3. Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB CNRS - UPR 9048) , 87, Avenue du Dr. Albert Schweitzer, Pessac Cedex, 33608, France;4. Chair of radiochemistry, Faculty of Chemistry , Lomonosov University , Moscow-V-234, 119899, Russia |
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| Abstract: | New class of layered oxides, phyllosiloxides, was expanded to three new compositions: KMg 2 Fe 3+ Si 4 O 12 , \rm{KFe}^{2+}_{2}\rm{AlSi}_{4}\rm{O}_{12} , and \rm{KFe}^{2+}\rm{Fe}^{3+}_{3}\rm{Si}_{3}\rm{O}_{12} . The sol-gel route was adopted to prepare a precursor and the polycrystalline samples were obtained by solvothermal treatments at 750 °C/160 MPa using 2-methoxy ethanol as solvent. The three powder X-ray diffraction patterns were successfully indexed by 1 M polytype of mica. Platelet morphologies of these samples were observed through the images of scanning electron microscopy. |
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| Keywords: | Phyllosiloxide Layered Oxide Iron Silicate Solvothermal Synthesis Magnetism |
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