Document Type

Article

Publication Version

Published Version

Publication Date

2005

Journal or Book Title

Chemistry of Materials

Volume

17

Issue

12

First Page

3092

Last Page

3100

DOI

10.1021/cm050315j

Abstract

Aluminas having hierarchical bimodal pore structures with regular arrayed macropores interconnected with mesopores were synthesized in a cone/plate apparatus that provided well-defined hydrodynamic I conditions. A parametric synthesis study was performed to better understand the synthesis conditions required to form the hierarchical structures. The synthesis experiments demonstrated that the hierarchnical structure could only be formed under limited mixing conditions. The mesoporous structure, which was created by interstitial porosity between boehmite nanoparticles, was formed independently of the macropores and was not significantly impacted by the use of a surfactant, whereas the formation of the macropores required the presence of an alkoxide droplet within the synthesis mixture and the surfactant played no role other than to influence the hydrodynamic conditions during synthesis.

Comments

Reprinted (adapted) with permission from Chemistry of Materials 17 (2005): 3092, doi: 10.1021/cm050315j. Copyright 2005 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf

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