Materials 2012, 5(2), 336-349; doi:10.3390/ma5020336
Article

Challenges and Strategies in the Synthesis of Mesoporous Alumina Powders and Hierarchical Alumina Monoliths

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Received: 14 December 2011; in revised form: 13 February 2012 / Accepted: 13 February 2012 / Published: 20 February 2012
(This article belongs to the Special Issue Advances in Porous Inorganic Materials)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A new rapid, very simple and one-step sol-gel strategy for the large-scale preparation of highly porous γ-Al2O3 is presented. The resulting mesoporous alumina materials feature high surface areas (400 m2 g−1), large pore volumes (0.8 mL g−1) and the γ-Al2O3 phase is obtained at low temperature (500 °C). The main advantages and drawbacks of different preparations of mesoporous alumina materials exhibiting high specific surface areas and large pore volumes such as surfactant-nanostructured alumina, sol-gel methods and hierarchically macro-/mesoporous alumina monoliths have been analyzed and compared. The most reproducible synthesis of mesoporous alumina are given. Evaporation-Induced Self-Assembly (EISA) is the sole method to lead to nanostructured mesoporous alumina by direct templating, but it is a difficult method to scale-up. Alumina featuring macro- and mesoporosity in monolithic shape is a very promising material for in flow applications; an optimized synthesis is described.
Keywords: mesoporous alumina; high surface area alumina; alumina monolith; hierarchical porosity; nanostructured alumina; catalyst support
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MDPI and ACS Style

Hartmann, S.; Sachse, A.; Galarneau, A. Challenges and Strategies in the Synthesis of Mesoporous Alumina Powders and Hierarchical Alumina Monoliths. Materials 2012, 5, 336-349.

AMA Style

Hartmann S, Sachse A, Galarneau A. Challenges and Strategies in the Synthesis of Mesoporous Alumina Powders and Hierarchical Alumina Monoliths. Materials. 2012; 5(2):336-349.

Chicago/Turabian Style

Hartmann, Sarah; Sachse, Alexander; Galarneau, Anne. 2012. "Challenges and Strategies in the Synthesis of Mesoporous Alumina Powders and Hierarchical Alumina Monoliths." Materials 5, no. 2: 336-349.

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