Structural and mechanical properties of nanostructured granular alumina catalysts

G. Buelna, Jerry Lin, L. X. Liu, J. D. Litster

Research output: Contribution to journalArticle

18 Citations (Scopus)

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
StatePublished - Feb 5 2003
Externally publishedYes

Fingerprint

Aluminum Oxide
aluminum oxide
Structural properties
mechanical property
Alumina
catalyst
gel
Mechanical properties
Catalysts
Sol-gels
Crystallites
hardness
Macros
microstructure
Hardness
Microstructure
Granulation
Pore structure
Catalyst supports
Particles (particulate matter)

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

Structural and mechanical properties of nanostructured granular alumina catalysts. / Buelna, G.; Lin, Jerry; Liu, L. X.; Litster, J. D.

In: Industrial and Engineering Chemistry Research, Vol. 42, No. 3, 05.02.2003, p. 442-447.

Research output: Contribution to journalArticle

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