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Issue 61, 2015
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Ordered mesoporous crystalline aluminas from self-assembly of ABC triblock terpolymer–butanol–alumina sols

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Abstract

A one-pot synthesis approach is described to generate ordered mesoporous crystalline γ-alumina–carbon composites and ordered mesoporous crystalline γ-alumina materials via the combination of soft and hard-templating chemistries using block copolymers as soft structure-directing agents. Periodically ordered alumina hybrid mesostructures were generated by self-assembly of a poly(isoprene)-block-poly(styrene)-block-poly(ethylene oxide) terpolymer, n-butanol and aluminum tri-sec-butoxide derived sols in organic solvents. The triblock terpolymer was converted into a rigid carbon framework during thermal annealing under nitrogen to support and preserve the ordered mesoporous crystalline γ-alumina–carbon composite structures up to 1200 °C. The carbon matrix was subsequently removed in a second heat treatment in air to obtain ordered mesoporous crystalline γ-alumina structures. Such thermally stable, highly crystalline, and periodically ordered mesoporous ceramic and ceramic–carbon composite materials may be promising candidates for various high temperature catalysis, separation, and energy-related applications.

Graphical abstract: Ordered mesoporous crystalline aluminas from self-assembly of ABC triblock terpolymer–butanol–alumina sols

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Publication details

The article was received on 23 Apr 2015, accepted on 28 May 2015 and first published on 28 May 2015


Article type: Paper
DOI: 10.1039/C5RA07421E
Citation: RSC Adv., 2015,5, 49287-49294
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    Ordered mesoporous crystalline aluminas from self-assembly of ABC triblock terpolymer–butanol–alumina sols

    K. W. Tan, H. Sai, S. W. Robbins, J. G. Werner, T. N. Hoheisel, S. A. Hesse, P. A. Beaucage, F. J. DiSalvo, S. M. Gruner, M. Murtagh and U. Wiesner, RSC Adv., 2015, 5, 49287
    DOI: 10.1039/C5RA07421E

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