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

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. [ABSTRACT FROM AUTHOR]