Granulation of Sol-Gel-Derived Nanostructured Alumina

Research output: Contribution to journalArticle

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Abstract

A sol-gel granulation process was developed to prepare porous nanostructured γ-alumina granules as supports for catalysts and adsorbents. The process, which starts with an aqueous sol of gelatinous boehmite, involves droplet formation, gelation in paraffin oil, conditioning in ammonia solution, and drying and calcination in air under controlled conditions. The γ-Al2O3 granules prepared are 1-3 mm-dia. spherical particles with large surface area (380 m2/g) and pore volume (0.5 cm3/g), uniform pore-size distribution (20-60 Å), and controllable average pore size (35 Å). These sol-gel-derived granules have excellent mechanical properties with crush strength (>100 N per granule) and attrition resistance (< 0.01 wt. %/h), much better than the commercial alumina and zeolite granules. Supported CuO sorbents were prepared on these granules for SO2 removal applications. The alumina-supported CuO sorbents contain higher loading of well-dispersed CuO and better sulfation properties than similar sorbents reported in the literature.

Original languageEnglish (US)
Pages (from-to)505-514
Number of pages10
JournalAICHE Journal
Volume43
Issue number2
StatePublished - Feb 1997
Externally publishedYes

Fingerprint

Granulation
Aluminum Oxide
Polymethyl Methacrylate
Sorbents
Sol-gels
Alumina
Gels
Pore size
Paraffin oils
Zeolites
Gelation
Sols
Ammonia
Catalyst supports
Calcination
Adsorbents
Drying
Air
Mechanical properties
Catalysts

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Environmental Engineering
  • Polymers and Plastics

Cite this

Granulation of Sol-Gel-Derived Nanostructured Alumina. / Deng, Shuguang; Lin, Jerry.

In: AICHE Journal, Vol. 43, No. 2, 02.1997, p. 505-514.

Research output: Contribution to journalArticle

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