Facile preparation of monolithic magnesium titanates with hierarchical porosity
作者： Olim N Ruzimuradov , George Hasegawa , Kazuyoshi Kanamori , Kazuki Nakanishi , None
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摘要: In this study, we for the first time came up with a facile approach to fabricate hierarchically porous nano-crystalline monolithic magnesium titanates (MgTi2O5/MgTiO3) by impregnating chloride into TiO2 monolith in solution containing urea followed appropriate heat-treatment. The formation of MgTi2O5/MgTiO3 materials took place solid-state reaction between original networks and precipitated MgCO3. MgCO3 is within wet gel impregnated Mg2+ CO2, which produced hydrolysis decarbonation chelating agent gels at 60°C. resultant retained narrow macropore size distribution centered diameter ∼1 µm. These monoliths impregnation, low-cost method, are expected open various engineering applications owing low thermal expansion coefficients high chemical physical stabilities.
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