Abstract
γ-Al2O3 nanoparticles with a porous structure and spherical shape, agglomerated from finer crystallites, were synthesized via a glycothermal route by using sodium oleate as surfactant and template. Disperse and spherical aluminum hydroxide nanoparticles with an average particle size of 77nm were prepared first by a glycothermal method. After calcining the aluminum hydroxide nanoparticles at 900°C and eliminating the organic template, disperse, spherical, and porous γ-Al2O3 nanoparticles with an average particle size of 50nm, agglomerated from 2–10nm crystalline particles, were obtained. The pore sizes in the porous γ-Al2O3 nanoparticles range between 1.8 and 10nm.
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