Title: TG/XRD/Sem Study of the Conversion of Gibbsite to (Pseudo) Boehmite
Abstract: Abstract The conversion of gibbsite to (pseudo) boehmite has been studied by thermogravimetry, X‐ray diffractometry and scanning electron microscopy, supplemented by density and surface area measurements. As a reference for desired product properties, commercial pseudoboehmite, laboratory synthesized pseudoboehmite and autoclaved boehmite have also been studied. Three kinds of heating processes have been applied: in an oven, in a steam flow and under vacuum. All experiments were carried out at 220°C. Prolonged heating under vacuum resulted in a complete conversion of gibbsite to (pseudo) boehmite. The product still differs too much from commercial pseudoboehmite to be a valuable alternative. Also taking into account the manufacturing implications of vacuum heating, this process seems hardly feasible on a large scale.
Publication Year: 1989
Publication Date: 1989-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 3
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