Skip to main content
Article
Synthesis of hierarchically structured aluminas under controlled hydrodynamic conditions
Chemistry of Materials
  • Weihua Deng, Iowa State University
  • Brent H. Shanks, Iowa State University
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
1-1-2005
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
Citation Information
Weihua Deng and Brent H. Shanks. "Synthesis of hierarchically structured aluminas under controlled hydrodynamic conditions" Chemistry of Materials Vol. 17 Iss. 12 (2005) p. 3092 - 3100
Available at: http://works.bepress.com/brent_shanks/10/