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      https://www.ias.ac.in/article/fulltext/boms/031/04/0625-0629

    • Keywords

       

      Hydrotalcite-like compound; synthesis process; intercalation; anion; concentration; pH.

    • Abstract

       

      In this study, we confirmed that the characteristics of anion intercalation into the interlayer of a hydrotalcite-like compound (HT) during synthesis are similar to those of the anion-exchange reaction of HTs as well as the reconstruction reaction of HTs from Mg–Al oxide. We demonstrated that

      1. Cl, which has a higher charge density than NO$^{–}_{3}$, more easily reacted with Mg and Al species to form HT structure, resulting in greater intercalation of Cl into the HT interlayer; and

      2. for HTs with lower Mg : Al molar ratios, OH, which has a higher charge density than Cl and NO$^{–}_{3}$, was more likely to interact with Mg and Al species to form HT structure, blocking the intercalation of Cl and NO$^{–}_{3}$.

      Furthermore, we showed that high concentrations of Cl and NO$^{–}_{3}$ in solution regulated their intercalation into the HT interlayer. The high activity of Cl and NO$^{–}_{3}$ in solution would facilitate the anions’ reactions with Mg and Al species to form HTs, resulting in a high degree of anion intercalation into the interlayer of HTs.

    • Author Affiliations

       

      Tomohito Kameda1 Toshiaki Yoshioka1 Fumiko Yabuuchi1 Miho Uchida1 Akitsugu Okuwaki1

      1. Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 07, Aoba-ku, Sendai 980-8579, Japan
    • Dates

       
  • Bulletin of Materials Science | News

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