Uniformly Porous Al2O3/LaPO4 and Al2O3/CePO4 Composites with Narrow Pore-Size Distribution |
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| Authors: | Yoshikazu Suzuki Masahiro Tsukatsune Susumu Yoshikawa Peter E D Morgan |
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| Affiliation: | Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan; Rockwell Scientific, Thousand Oaks, California 91360 |
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| Abstract: | Porous Al2O3/20 vol% LaPO4 and Al2O3/20 vol% CePO4 composites with very narrow pore-size distribution at around 200 nm have been successfully synthesized by reactive sintering at 1100°C for 2 h from RE2(CO3)3· x H2O (RE = La or Ce), Al(H2PO4)3 and Al2O3 with LiF additive. Similar to the previously reported UPC-3Ds (uniformly porous composites with a three-dimensional network structure, e.g. CaZrO3/MgO system), decomposed gases in the starting materials formed a homogeneous open porous structure with a porosity of ～40%. X-ray diffraction, 31P magic-angle spinning nuclear magnetic resonance, scanning electron microscopy, and mercury porosimetry revealed the structure of the porous composites. |
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