Catalytic nanoliths

H. Feng, J. W. Elam, J. A. Libera, M. J. Pellin, P. C. Stair*

*Corresponding author for this work

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

The nanoporous anodic aluminum oxide (AAO) structure is shown to be a useful platform for heterogeneous catalysis. By appropriately masking the perimeter during anodization and etching, the AAO can be formed at the center of an aluminum disc. The remaining aluminum ring connects seamlessly to the AAO and provides mechanical support for convenient handling. The supported AAO can be sealed in a standard fitting so that the nanopores in the structure function as an array of tubular reactors, i.e. a nanolith. Coating the walls with catalytically active materials turns the nanolith into a novel catalytic system. For the oxidative dehydrogenation (ODH) of cyclohexane, the nanolith catalytic system is superior to a conventional powdered catalyst in terms of both efficiency and in reducing over oxidation. A simple analysis of the flow through the nanolith combined with experimental data indicates that mass transfer through the nanopores follows a mixed flow model.

Original languageEnglish (US)
Pages (from-to)560-567
Number of pages8
JournalChemical Engineering Science
Volume64
Issue number3
DOIs
StatePublished - Feb 1 2009

Keywords

  • Anodic aluminum oxide (AAO)
  • Catalysis
  • Multiphase reactions
  • Nanostructure
  • Oxidative dehydrogenation (ODH)
  • Porous media

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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    Feng, H., Elam, J. W., Libera, J. A., Pellin, M. J., & Stair, P. C. (2009). Catalytic nanoliths. Chemical Engineering Science, 64(3), 560-567. https://doi.org/10.1016/j.ces.2008.09.027