This study defines the synthesis of a mesoporous pseudoboehmite without the use of organic agents. Precipitation of a mesoporous pseudoboehmite with a specific surface area of 317 m2/g at pH=7 and atmospheric pressure from a temperature solution of 60°C, alkaline melting of a bauxite, gave a mesoporous pseudoboehmite with a specific surface area of 317 m2/g. Hydrochloric acid (HCl) is used as a precipitating agent. In comparison, the same treatment applied to the same solution but at a lower temperature of 25°C produced an amorphous gel with a low specific surface. As a result, the temperature of the synthesis solution has a significant impact on the finished product's textural properties, particularly the volume and pore diameter. Furthermore, the pseudoboehmite was transformed into a nano spinel lattice alumina- with a precise surface area of 272 m2/g using this simple process. The textural analysis of alumina nearly preserved the topotactic properties of pseudoboehmite. Analytical methods such as EDX, XRD, FTIR, SEM, and BET were used to characterize the synthesized materials. The nitrogen isotherms and pore size distribution curves show that the products made with alumina- at 25°C or 60°C are mesoporous materials with flat particles.
Author (S) DetailsDr. Idriss Mahamat Yaya
University Hassan IER, Department of Applied Chemistry and Environment, Faculty of Sciences and Technology (FST), BP 577, route de Casablanca, Settat, Morocco.
Nimbona Guillaume
University Hassan IER, Department of Applied Chemistry and Environment, Faculty of Sciences and Technology (FST), BP 577, route de Casablanca, Settat, Morocco.
Mohammed Arkhis
University Hassan IER, Department of Applied Chemistry and Environment, Faculty of Sciences and Technology (FST), BP 577, route de Casablanca, Settat, Morocco.
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