Preparation of submicron size gamma lithium aluminate particles from the mixture of alumina sol and lithium salt by ultrasonic spray pyrolysis

Yun Chan Kang, Seung Bin Park, Sang Woon Kwon

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Gamma lithium aluminate particles of submicron size were directly prepared by ultrasonic spray pyrolysis from two different solutions. One was a colloidal mixture of alumina sol and lithium salt (S1), and the other was an aqueous solution of aluminum nitrate and lithium salt (S2). The influence of these two different types of solution on the purity of the crystalline phase and the morphology of the particles was investigated. The pure gamma lithium aluminate particles were prepared at 800°C from the colloidal solution (S1) which was obtained from aluminum isopropoxide and lithium formate. The particles prepared from the colloidal solution (S1) had purer gamma phase than that of the particles prepared from the aqueous solution of aluminum nitrate and lithium salts (S2). The particles prepared from the aqueous solution of aluminum nitrate and lithium salt (S2) had smooth surfaces and low surface area (7 m2/g), whereas the particles prepared from the colloidal solution (S1) had rough surfaces and high surface area (45 m2/g).

Original languageEnglish
Pages (from-to)59-62
Number of pages4
JournalJournal of Colloid and Interface Science
Volume182
Issue number1
DOIs
Publication statusPublished - 1996 Sep 1

Keywords

  • alumina sol
  • gamma lithium aluminate
  • sol spraying
  • spray pyrolysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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