Abstract
We report a facile synthesis of porous alumina (PA) which enables control of pore structure using a mixture of fatty alcohol polyoxyethylene ether (AEO-7) and poly (alkylene oxide) triblock copolymers (P123) as the template via an evaporation-induced self-assembly (EISA) pathway associated with thermal treatment. N2 adsorption–desorption results show that using over 80wt% AEO-7, the obtained materials are super-microporous (pore size in the range of 1–2nm), then if further decrease in the AEO-7 content will transform to mesopore (pore size >2nm). When the mass fraction of P123 is less than 20wt%, the material has a large surface area (more than 650m2/g) and nanocrystalline phase is obtained at 400°C. Even after calcination at 750°C for 1h, the sample of mass fraction 20wt% P123 still exhibits a high specific area of 450m2/g with large microporosity.
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