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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.118  No.1381 (September) (2010)  >  pp.819-822

Journal of the Ceramic Society of Japan
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Porous MgTi2O5/MgTiO3 composites with narrow pore-size distribution: in situ processing and pore structure analysis

Yoshikazu SUZUKI1) and Masafumi MORIMOTO2)
1) Institute of Advanced Energy, Kyoto University
2) Sysmex Corporation


  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.


Keyword:
MgTi2O5, Pseudobrookite, Karrooite, MgTiO3, Geikielite, Pore-size distribution, Diesel particulate filter (DPF), In situ process

Received: March 29, 2010
Accepted: May 20, 2010 , Published online: September 01, 2010
Copyright (c) 2010 The Ceramic Society of Japan

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