Hydrous protonated forms derived from n=3 Dion-Jacobson-type layered perovskite titanotantalate RbLa2Ti2TaO10: Interlayer reactivity with n-alkylamine

Motohide Matsuda, Toshifumi Hioki, Keisuke Okada, Shunsuke Nishimoto, Michihiro Miyake

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Hydrous protonated forms of layered perovskite titanotantalate were derived from the n=3 Dion-Jacobson-type RbLa2Ti2TaO10 by ion-exchange of the interlayer Rb+ ions in aqueous HNO3, and their interlayer reactivity with n-alkylamine was investigated. Although all of the protonated forms thus derived were indexed as the same tetragonal cell with P4/mmm as the host, the interlayer reactivity with n-alkylamine was degraded with an increase in the ion-exchange treatment time. A significant difference was observed in dehydration behavior below 200 °C. The protonated forms synthesized with short ion-exchange time showed a large endothermic peak with weight loss around 60 °C, while those with prolonged treatment time did not. The intercalation of n-alkylamine was confirmed for the former, but not for the latter. From these results, it was considered that hydronium ions and/or H2O molecules responsible for the dehydration around 60 °C play an important role in the intercalation of n-alkylamine into the protonated forms.

Original languageEnglish
Pages (from-to)1325-1329
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number5-6
DOIs
Publication statusPublished - May 2006

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Perovskite
interlayers
Ion exchange
reactivity
Intercalation
Dehydration
intercalation
dehydration
ions
Ions
hydronium ions
Molecules
perovskite
cells
molecules
hydronium ion

Keywords

  • A. Ceramics
  • B. Chemical synthesis
  • C. Thermogravimetric analysis (TGA)
  • D. Crystal structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Hydrous protonated forms derived from n=3 Dion-Jacobson-type layered perovskite titanotantalate RbLa2Ti2TaO10 : Interlayer reactivity with n-alkylamine. / Matsuda, Motohide; Hioki, Toshifumi; Okada, Keisuke; Nishimoto, Shunsuke; Miyake, Michihiro.

In: Journal of Physics and Chemistry of Solids, Vol. 67, No. 5-6, 05.2006, p. 1325-1329.

Research output: Contribution to journalArticle

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abstract = "Hydrous protonated forms of layered perovskite titanotantalate were derived from the n=3 Dion-Jacobson-type RbLa2Ti2TaO10 by ion-exchange of the interlayer Rb+ ions in aqueous HNO3, and their interlayer reactivity with n-alkylamine was investigated. Although all of the protonated forms thus derived were indexed as the same tetragonal cell with P4/mmm as the host, the interlayer reactivity with n-alkylamine was degraded with an increase in the ion-exchange treatment time. A significant difference was observed in dehydration behavior below 200 °C. The protonated forms synthesized with short ion-exchange time showed a large endothermic peak with weight loss around 60 °C, while those with prolonged treatment time did not. The intercalation of n-alkylamine was confirmed for the former, but not for the latter. From these results, it was considered that hydronium ions and/or H2O molecules responsible for the dehydration around 60 °C play an important role in the intercalation of n-alkylamine into the protonated forms.",
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T1 - Hydrous protonated forms derived from n=3 Dion-Jacobson-type layered perovskite titanotantalate RbLa2Ti2TaO10

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AU - Miyake, Michihiro

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N2 - Hydrous protonated forms of layered perovskite titanotantalate were derived from the n=3 Dion-Jacobson-type RbLa2Ti2TaO10 by ion-exchange of the interlayer Rb+ ions in aqueous HNO3, and their interlayer reactivity with n-alkylamine was investigated. Although all of the protonated forms thus derived were indexed as the same tetragonal cell with P4/mmm as the host, the interlayer reactivity with n-alkylamine was degraded with an increase in the ion-exchange treatment time. A significant difference was observed in dehydration behavior below 200 °C. The protonated forms synthesized with short ion-exchange time showed a large endothermic peak with weight loss around 60 °C, while those with prolonged treatment time did not. The intercalation of n-alkylamine was confirmed for the former, but not for the latter. From these results, it was considered that hydronium ions and/or H2O molecules responsible for the dehydration around 60 °C play an important role in the intercalation of n-alkylamine into the protonated forms.

AB - Hydrous protonated forms of layered perovskite titanotantalate were derived from the n=3 Dion-Jacobson-type RbLa2Ti2TaO10 by ion-exchange of the interlayer Rb+ ions in aqueous HNO3, and their interlayer reactivity with n-alkylamine was investigated. Although all of the protonated forms thus derived were indexed as the same tetragonal cell with P4/mmm as the host, the interlayer reactivity with n-alkylamine was degraded with an increase in the ion-exchange treatment time. A significant difference was observed in dehydration behavior below 200 °C. The protonated forms synthesized with short ion-exchange time showed a large endothermic peak with weight loss around 60 °C, while those with prolonged treatment time did not. The intercalation of n-alkylamine was confirmed for the former, but not for the latter. From these results, it was considered that hydronium ions and/or H2O molecules responsible for the dehydration around 60 °C play an important role in the intercalation of n-alkylamine into the protonated forms.

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