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

Sato Tsugio | Zendy; Onai Satoshi | Zendy; Yoshioka Toshiaki | Zendy; Okuwaki Akitsugu | Zendy

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

Author(s) -

Sato Tsugio,

Onai Satoshi,

Yoshioka Toshiaki,

Okuwaki Akitsugu

Publication year - 1993

Publication title -

journal of chemical technology and biotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.64

H-Index - 117

eISSN - 1097-4660

pISSN - 0268-2575

DOI - 10.1002/jctb.280570207

Subject(s) - hydrotalcite , thermal decomposition , hydroxide , magnesium , inorganic chemistry , oxide , salt (chemistry) , carbonate , decomposition , chemistry , aluminium , materials science , metallurgy , catalysis , organic chemistry , biochemistry

The causticization behaviour of Na 2 CO 3 with rock‐salt type oxide, Mg 2(1‐ x /(2+ x ) O (M = Al 3+ and Fe 3+ , 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]/[Na 2 CO 3 ] and increasing the temperature but decreased with increasing the initial concentration of Na 2 CO 3 . The causticization behaviour could be adequately described by the equation of anion exchange equilibria between CO 3 2‐ and OH − for layered double hydroxide.

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