07-P-18-Template synthesis and characterization of nanoporous alumina with narrow pore size distribution from inorganic salts

Abstract

This chapter describes the template synthesis and characterization of nanoporous alumina with narrow pore-size distribution from inorganic salts. A polyethylene oxide (PEO) surfactant and an aqueous solution of inorganic aluminum salt are used to prepare activated aluminas with narrow pore size distributions (PSD). The condensation of the aluminum hydrolysate species around the micelles of the surfactant is induced by urea. Mesoporous structure of alumina formed as the surfactant is removed. The function of the PEO surfactant depends on synthesis route. Highly porous alumina is obtained by another process, from the same PEO surfactant and an inorganic salt of aluminum. The proposed synthesis approach is of importance to the preparation of activated alumina with various pore structures in industrial practice.