Advances and Applications in Mechanical Engineering and TechnologyAuthor's: Adrián Zamorategui, Julio A. Soto and Satoshi Sugita
Pages: [1] - [17]
Received Date: November 25, 2012; Revised December 15, 2012.
Submitted by:
Pseudoboehmite was prepared by using basic aluminum sulphate as a raw
material, which was synthesized by homogeneous precipitation. This BAS
was neutralized in solid/liquid reaction with ammonium hydroxide in
order to transform to aluminum hydroxide. The hydroxide was dried by
three different routes: spray drying, freeze drying, and oven drying.
The effect of the drying methods on the final textural properties of
the heat treated pseudoboehmite was evaluated. Spray drying was the
best route to obtain high surface area 
for pseudoboehmite heat treated at 450°C
It was better than the obtained by the use
of freeze and oven dried routes as indicated by BET analysis (350 and
respectively. Homogeneous precipitation
offers the possibility to obtain 
powder with a high specific surface area
and fibrous morphology.
homogeneous precipitation, pseudoboehmite, spray drying, freeze drying, oven drying.
