Porous MgTi2O5/MgTiO3 composites with narrow pore-size distribution: in situ processing and pore structure analysis
作者： Yoshikazu SUZUKI , Masafumi MORIMOTO
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摘要: Porous ceramics based on refractory double oxides are promising for the next-generation diesel particulate filter (DPF) materials. Similarly to aluminum titanate (Al2TiO5), MgTi2O5 has a pseudobrookite-type crystal structure with low thermal expansion coefficients among oxides. Since higher stability of pseudobrookite phase than Al2TiO5, it is expected that MgTi2O5-based materials suitable DPF In this study, porous MgTi2O5/MgTiO3 composites have been prepared by in situ processing (viz. reactive sintering) at 1000–1200°C. very narrow pore-size distribution diameter ∼1 µm were obtained pyrolytic sintering 1000–1100°C. Internal pore-structure was characterized mercury intrusion–extrusion porosimetry.
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