Structural and mechanical properties of nanostructured granular alumina catalysts

G. Buelna, Y. S. Lin, L. X. Liu, J. D. Litster

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Granular γ-Al2O3 support and 8 wt % CuO/γ-A2O3 catalyst were synthesized by a sol-gel granulation method. The pore structure, crush strength, hardness, and elasticity of these sol-gel-derived catalysts were studied and compared with similar commercial catalysts prepared by non-sol-gel methods. Alumina and CuO-coated alumina granular particles prepared by different methods have different macro- and microstructure. The sol-gel-derived granular γ-alumina and CuO-coated γ-alumina granular particles have a structure defined by compact packing of uniform, nanosized γ-alumina crystallites. They are characterized by a more uniform pore size distribution and larger surface area as compared to similar commercial samples with a structure defined by packing of aggregates consisting of nonuniform γ-alumina crystallites. Because of the differences in the macro- and microstructure, the sol-gel-derived granular samples offer higher crush strength and greater hardness than the commercial samples.

Original languageEnglish (US)
Pages (from-to)442-447
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume42
Issue number3
DOIs
StatePublished - Feb 5 2003
Externally publishedYes

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ASJC Scopus subject areas

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

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