Causticization of sodium carbonate with rock‐salt type magnesium aluminium oxide formed by the thermal decomposition of hydrotalcite‐like layered double hydroxide

Tsugio Sato, Satoshi Onai, Toshiaki Yoshioka, Akitsugu Okuwaki

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The causticization behaviour of Na2CO3 with rock‐salt type oxide, Mg2(1‐x/(2+x) O (M = Al3+ and Fe3+, x = 0.2 and 0.33), produced by the thermal decomposition of hydrotalcite‐like layered double hydroxide was investigated at 30–60°C. The degree of causticization increased with increasing the molar ratio of [rock‐salt type oxide]/[Na2CO3] and increasing the temperature but decreased with increasing the initial concentration of Na2CO3. The causticization behaviour could be adequately described by the equation of anion exchange equilibria between CO32‐ and OH for layered double hydroxide.

Original languageEnglish
Pages (from-to)137-140
Number of pages4
JournalJournal of Chemical Technology & Biotechnology
Volume57
Issue number2
DOIs
Publication statusPublished - 1993

Keywords

  • anion uptake equilibrium
  • causticization
  • layered double hydroxide
  • magnesium aluminium oxide
  • magnesium iron oxide

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry

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