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Determination of the charge of Al13 Keggin oligocations intercalated into synthetic hectorite

  • Marius Schöttle , Dominik Schuchardt , Andreas Edenharter , Sebastian Koch , Jürgen Senker and Josef Breu EMAIL logo
Published/Copyright: December 4, 2018
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Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 74 Issue 1

Abstract

Applying a nematic liquid crystalline phase of a synthetic Na-hectorite with layer separations >100 nm, the reaction time for pillaring with Al13 Keggin oligocation could be reduced to seconds ensuring that cation exchange is controlled by thermodynamics. With this material at hand we are able to resolve the long-standing dispute regarding the charge of intercalated Keggin oligocations. Micropore sizes as determined by physisorption isotherms, adsorption isotherms obtained via elemental analysis, and results of 27Al solid-state NMR and pyridine probe IR spectroscopy favor a charge of +7 for the Al13 pillars intercalated into hectorite unaltered.

Keywords: Al-pillared clay; charge; hectorite; Keggin

Dedicated to: Professor Wolfgang Bensch on the occasion of his 65th birthday.

Acknowledgements

We thank Beate Bojer for recording the NMR spectra and Lena Geiling for physisorption measurements. We acknowledge the financial support of this work by the Deutsche Forschungsgemeinschaft (SFB 840).

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Supplementary Material

The online version of this article offers supplementary material (https://doi.org/10.1515/znb-2018-0172).

Received: 2018-08-15
Accepted: 2018-10-26
Published Online: 2018-12-04
Published in Print: 2019-01-26

©2019 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this Issue
  3. Preface
  4. Congratulations to Professor Wolfgang Bensch on the occasion of his 65th birthday
  5. Orthorhombic sulfur from Cap Garonne, Mine du Pradet
  6. An unprecedented structural phase transition in struvite-type compounds: dimorphism of KMgAsO4(H2O)6
  7. ZrNiAl-type gallides with pronounced metal-metal bonding, and the dimorphism of ScPdGa
  8. Tripodal methanetrisulfonate ligands in the trinuclear complex {Ni3[CH(SO3)3]2(NMP)8}
  9. Crystal structure of the high-temperature form of the trisulfide Cs2S3 and the (3+1)D modulated structure of the telluride K37Te28
  10. Synthesis, crystal structure and properties of Cd(NCS)2 coordination compounds with two different Cd coordination modes
  11. Crystalline orthorhombic Ln[CO3][OH] (Ln=La, Pr, Nd, Sm, Eu, Gd) compounds hydrothermally synthesised with CO2 from air as carbonate source
  12. The role of synthesis conditions for structural defects and lattice strain in β-TaON and their effect on photo- and photoelectrocatalysis
  13. Determination of the charge of Al13 Keggin oligocations intercalated into synthetic hectorite
  14. Electronic and magnetic properties of the 2H-NbS2 intercalated by 3d transition metal atoms
  15. CsTb3STe4 und CsTb5S2Te6: Zwei pseudo-ternäre Caesium-Terbium-Chalkogenide mit geordneten S2−- und Te2−-Anionen
  16. Synthesis, molecular, and crystal structures of 3d transition metal cyanocyclopentadienides [M(MeOH)n(H2O)4–n{C5(CN)4X}2] (M=Mn, Fe, Co, Ni, Cu, Zn; X=H, CN, NH2, NO2)
  17. Crystal structures and FT-IR spectra of three N,N-dicyclohexylmethylammonium halides C13H26N+X− (X = Cl, Br, I)
  18. Crystal structure and magnetic properties of the ternary rare earth metal-rich transition metallides RE14T3Al3 (RE = Y, Gd–Tm, Lu; T = Co, Ni)
  19. Modulated vacancy ordering in SrGe6−x (x≈0.45)
  20. Monitoring the solvation process and stability of Eu2+ in an ionic liquid by in situ luminescence analysis
https://doi.org/10.1515/znb-2018-0172
Keywords for this article
Al-pillared clay; charge; hectorite; Keggin

Articles in the same Issue

  1. Frontmatter
  2. In this Issue
  3. Preface
  4. Congratulations to Professor Wolfgang Bensch on the occasion of his 65th birthday
  5. Orthorhombic sulfur from Cap Garonne, Mine du Pradet
  6. An unprecedented structural phase transition in struvite-type compounds: dimorphism of KMgAsO4(H2O)6
  7. ZrNiAl-type gallides with pronounced metal-metal bonding, and the dimorphism of ScPdGa
  8. Tripodal methanetrisulfonate ligands in the trinuclear complex {Ni3[CH(SO3)3]2(NMP)8}
  9. Crystal structure of the high-temperature form of the trisulfide Cs2S3 and the (3+1)D modulated structure of the telluride K37Te28
  10. Synthesis, crystal structure and properties of Cd(NCS)2 coordination compounds with two different Cd coordination modes
  11. Crystalline orthorhombic Ln[CO3][OH] (Ln=La, Pr, Nd, Sm, Eu, Gd) compounds hydrothermally synthesised with CO2 from air as carbonate source
  12. The role of synthesis conditions for structural defects and lattice strain in β-TaON and their effect on photo- and photoelectrocatalysis
  13. Determination of the charge of Al13 Keggin oligocations intercalated into synthetic hectorite
  14. Electronic and magnetic properties of the 2H-NbS2 intercalated by 3d transition metal atoms
  15. CsTb3STe4 und CsTb5S2Te6: Zwei pseudo-ternäre Caesium-Terbium-Chalkogenide mit geordneten S2−- und Te2−-Anionen
  16. Synthesis, molecular, and crystal structures of 3d transition metal cyanocyclopentadienides [M(MeOH)n(H2O)4–n{C5(CN)4X}2] (M=Mn, Fe, Co, Ni, Cu, Zn; X=H, CN, NH2, NO2)
  17. Crystal structures and FT-IR spectra of three N,N-dicyclohexylmethylammonium halides C13H26N+X− (X = Cl, Br, I)
  18. Crystal structure and magnetic properties of the ternary rare earth metal-rich transition metallides RE14T3Al3 (RE = Y, Gd–Tm, Lu; T = Co, Ni)
  19. Modulated vacancy ordering in SrGe6−x (x≈0.45)
  20. Monitoring the solvation process and stability of Eu2+ in an ionic liquid by in situ luminescence analysis
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