Publications

Crystalline meso-/macroporous magnesium oxide prepared by a nanocasting route

Author(s)
Andrea Feinle, Manfred Rapp, Johanna Lehner, Herwig Peterlik, Nicola Hüsing
Abstract

Porous magnesium oxide with a cellular macrostructure has been successfully prepared by a double replication route. In the first step, the synthesis of micro-/macroporous carbon monoliths was realized through a nanocasting approach using micro-/meso-/macroporous silica with a fully connected hierarchical pore structure as the template. In the second replication step the hierarchically organized porous carbon was converted into magnesium oxide by infiltration of the pore network with an aqueous magnesium nitrate solution and subsequent heat treatment at 300 °C to convert the nitrate into the oxide. Finally, the carbon template was removed by thermal combustion and (periclase) MgO with a cellular, very unique network build-up from interconnected, crystalline magnesia struts is obtained. The synthesis of periclase with high specific surface areas and a defined macroporosity paves the path to broaden the areas of applications for MgO.

Organisation(s)
Dynamics of Condensed Systems, Faculty Center for Nano Structure Research
External organisation(s)
Paris-Lodron Universität Salzburg
Journal
Journal of Supercritical Fluids
Volume
152
ISSN
0896-8446
DOI
https://doi.org/10.1016/j.supflu.2019.104549
Publication date
10-2019
Peer reviewed
Yes
Austrian Fields of Science 2012
Condensed matter, Physical chemistry
Keywords
ASJC Scopus subject areas
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Portal url
https://ucris.univie.ac.at/portal/en/publications/crystalline-mesomacroporous-magnesium-oxide-prepared-by-a-nanocasting-route(c5d666e8-36bb-4790-b1df-929b860a69b3).html