Texture of spherical aluminum phosphate particles |
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| Authors: | K. Kandori T. Imazato A. Yasukawa T. Ishikawa |
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| Affiliation: | (1) School of Chemistry, Osaka University of Education, Asahigaoka 4-698-1, 582 Kashiwara-shi Osaka, Japan |
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| Abstract: | Spherical aluminum phosphate particles with a mean particle diameter of 477±16 nm, produced from aging of a solution containing Al(NO3)3, Na2HPO4 and HNO3 at 100°C for 19 h in 20-cm3 Teflon-lined screw-capped Pyrex test tube without agitation, were characterized by various means. It was revealed from x-ray diffraction measurement and transmission electron microscope observation that amorphous particles are formed by agglomeration of small primary particles. The particles exhibited a high selective adsorption of H2O though they adsorbed small amount of N2 and CO2. This characteristic phenomenon was explained by rehydration of Al3+ ions by H2O molecules that were penetrated into the particles. |
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| Keywords: | Spherical metal phosphate aluminum phosphate texture characterization selective adsorption of H2O |
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