Sol-gel-derived mesoporous γ-alumina granules

Genoveva Buelna, Y. S. Lin

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Synthesis of stable boehmite sols and structural properties of the sol-gel-derived γ-alumina using alkoxides, commercial boehmite powders, and aluminum chloride were studied for cost-effective preparation of high quality γ-alumina granules. Stable boehmite sols could be prepared from aluminum butoxide, aluminum isopropoxide, and commercial boehmite powders but not from aluminum chloride. The stable sol-derived γ-alumina has large surface area and nanopore size with uniform pore size distributions. Mesoporous spherical γ-alumina granules were prepared by an oil-drop process from aluminum butoxide, aluminum isopropoxide and a commercial boehmite powder under specific conditions. The sol-gel-derived γ-alumina granules are better than the commercial γ-alumina granules in terms of the pore structure and mechanical strength. The successful synthesis of γ-alumina granules by the sol-gel method from the commercial boehmite powder provides a basis for large-scale, cost-effective production of the high quality γ-alumina granules for use as sorbents or catalysts in industrial processes.

Original languageEnglish (US)
Pages (from-to)359-369
Number of pages11
JournalMicroporous and Mesoporous Materials
Volume30
Issue number2-3
DOIs
StatePublished - Sep 1999
Externally publishedYes

Keywords

  • Catalyst support
  • Granulation
  • Oil drop
  • Sol-gel
  • Sorbents

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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