Preparation of Mesoporous γ-Al2O3 from Aluminum Hydroxide Peptized with Organic Acids

Resumo

The relationships of the formation of aluminum oxide from aluminum hydroxide peptized with organic acids (propionic, maleic, malonic, tartaric) were studied. The pore structure parameters of the hydroxide samples and of aluminum oxide samples obtained from them are strongly influenced by acid peptization. The nature of the acid influences the extent of defectiveness of the γ-Al₂O₃ structure, manifested in the density of aluminum oxide, measured by helium pycnometry. The possibility and conditions for preparing mesoporous γ-Al₂O₃ suitable for use in chemical and petrochemical processes were determined.