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Title: Porous MgTi2O5/MgTiO3 composites with narrow pore-size distribution: in situ processing and pore structure analysis
Authors: SUZUKI, Yoshikazu
MORIMOTO, Masafumi
Author's alias: 鈴木, 義和
Keywords: MgTi2O5
Pseudobrookite
Karrooite
MgTiO3
Geikielite
Pore-size distribution
Diesel particulate filter (DPF)
In situ process
Issue Date: Sep-2010
Publisher: The Ceramic Society of Japan
Journal title: Journal of the Ceramic Society of Japan
Volume: 118
Issue: 1381
Start page: 819
End page: 822
Abstract: 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 MgTi2O5 has higher stability of pseudobrookite phase than Al2TiO5, it is expected that MgTi2O5-based materials are suitable for the next-generation DPF materials. In this study, porous MgTi2O5/MgTiO3 composites have been prepared by in situ processing (viz. reactive sintering) at 1000–1200°C. Porous MgTi2O5/MgTiO3 composites with very narrow pore-size distribution at the diameter of ∼1 µm were obtained by the pyrolytic reactive sintering at 1000–1100°C. Internal pore-structure was characterized by mercury intrusion–extrusion porosimetry.
Rights: (c) 2010 The Ceramic Society of Japan
URI: http://hdl.handle.net/2433/131810
DOI(Published Version): 10.2109/jcersj2.118.819
Appears in Collections:Journal Articles

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