ISSN:
1435-1536
Keywords:
Spherical metal phosphate
;
aluminum phosphate
;
texture
;
characterization
;
selective adsorption of H2O
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00665647
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