Sol-gel synthesis of silicalite/γ-alumina granules

Zhaohui Yang, Y. S. Lin

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Spherical silicalite/γ-Al2O3 composite granules of about 2 mm in diameter were prepared by a sol-gel process from a mixture of the stable boehmite and silicalite sols. The stable silicalite sol was prepared by a hydrothermal method. Silicalite/γ-Al2O3 composite granules with a zeolite content of up to 70 wt % were formed by the sol-gel 'oil-drop' process in which a paraffin oil and ammonia solution were used as the media to facilitate shape forming and consolidation of the gel structure. The sol-gel-derived silicalite/γ-Al2O3 granules have a pore structure reassembling that of a mixture of silicalite and γ-Al2O3 powders. The crush strength of the sol-gel-derived silicalite granules is about six times that of a similar commercial silicalite granule. In addition, the sol-gel-derived silicalite/γ-Al2O3 granules exhibit better sorption properties for SO2 at a lower SO2 partial pressure than pure silicalite powder.

Original languageEnglish (US)
Pages (from-to)4944-4948
Number of pages5
JournalIndustrial and Engineering Chemistry Research
Volume39
Issue number12
StatePublished - Dec 2000
Externally publishedYes

Fingerprint

Aluminum Oxide
aluminum oxide
Sol-gels
Alumina
gel
Polymethyl Methacrylate
Sols
Powders
Paraffin oils
Zeolites
Composite materials
Pore structure
Ammonia
Partial pressure
Consolidation
Sol-gel process
boehmite
Sorption
Oils
Gels

ASJC Scopus subject areas

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

Cite this

Sol-gel synthesis of silicalite/γ-alumina granules. / Yang, Zhaohui; Lin, Y. S.

In: Industrial and Engineering Chemistry Research, Vol. 39, No. 12, 12.2000, p. 4944-4948.

Research output: Contribution to journalArticle

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