Preparation of Co-Al layered double hydroxides by the hydrothermal urea method for controlled particle size

Yuki Arai, Makoto Ogawa

Research output: Contribution to journalArticle

53 Citations (Scopus)


In order to control particle size and the distribution, Co-Al layered double hydroxides were prepared from aqueous glycerol solutions of cobalt chloride and aluminum chloride by urea hydrolysis under hydrothermal conditions. Effects of the synthetic conditions including heating temperature and time, and glycerol/water ratio on the particle size and its distributions of Co-Al layered double hydroxide were discussed. Particle diameter was controlled from 1.0 (glycerol/water ratio = 10 g/40 mL) to 38.3 μm (glycerol/water ratio = 0 g/40 mL, heating at 50 °C for 150 days). Narrow particle diameter distribution as low as 20% coefficient of variation was achieved under optimized synthetic conditions (glycerol/water ratio = 10 g/40 mL, heating temperature < 80 °C).

Original languageEnglish
Pages (from-to)601-604
Number of pages4
JournalApplied Clay Science
Issue number3-4
Publication statusPublished - 2009 Jan



  • Glycerol
  • Homogeneous precipitation
  • Layered double hydroxide
  • Particle size distribution
  • Urea

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

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