PREPARATION OF COBALT ALUMINUM DOUBLE HYDROXIDES BY A COPRECIPITATION METHOD

YONG PARK; YOSHINOBU MASUYAMA; KAZUYUKI KURODA; CHUZO KATO

doi:10.11362/jcssjclayscience1960.7.289

YONG PARK, YOSHINOBU MASUYAMA, KAZUYUKI KURODA, CHUZO KATO

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Keywords: Anion exchange, Cobalt aluminum double hydroxide, Coprecipitation, Hydrotalcite-like compounds

JOURNAL FREE ACCESS

1989 Volume 7 Issue 5 Pages 289-295

DOI https://doi.org/10.11362/jcssjclayscience1960.7.289

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Abstract

Cobalt aluminum double hydroxides were formed by a coprecipitation method. The solid solution range of the double hydroxides was 0.20≤x≤0.32, where x=Al/(Co+Al) in the resulting products. Anion exchange capacities of the Cl-type compounds were 2.01-2.74 mequiv/g. The interlayer anions were ion-exchanged by various inorganic and organic anions, and the basal spacing increased in the following sequence;CO₃^2-<Cl^-<NO₃^-<SO₄^2-.

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