Abstract
Using dimethylamine borane (DMAB) as a precipitator, monodisperse and spherical aluminum basic sulfate particles with an average diameter of 96nm and a narrow size distribution from 75 to 127nm were prepared by a homogeneous precipitation route. By calcining the aluminum basic sulfate particles at 950°C for 2h, the γ-Al2O3 nanoparticles with a spherical shape, an average size of 90nm, and no agglomeration were obtained. The aluminum basic sulfate particles and the γ-Al2O3 nanoparticles have a porous structure. The monodisperse porous γ-Al2O3 nanoparticles have an average pore diameter of 9nm and a pore size distribution from 2 to 16nm.
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