One-pot solvothermal synthesis of a well-ordered layered sodium aluminoalcoholate complex: a useful precursor for the preparation of porous Al[subscript 2]O[subscript 3] particles
Name
One-pot Solvothermal Synthesis of Well-ordered Layered Sodium Aluminoalcoholate Complex A Useful Precursor for the Preparation of Porous Al2O3 Particles.pdf
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Author(s)
Li, Xiansen
Michaelis, Vladimir K.
Ong, Ta-Chung
Smith, Stacey J.
McKay, Ian
Griffin, Robert Guy
Wang, Evelyn
Mueller, Peter
Date Issued
January 2014
Journal
CrystEngComm
Publisher
Royal Society of Chemistry, The
Citation
Li, Xiansen, Vladimir K. Michaelis, Ta-Chung Ong, Stacey J. Smith, Ian McKay, Peter Müller, Robert G. Griffin, and Evelyn N. Wang. “One-Pot Solvothermal Synthesis of a Well-Ordered Layered Sodium Aluminoalcoholate Complex: a Useful Precursor for the Preparation of Porous Al[subscript 2]O[subscript 3] Particles.” CrystEngComm 16, no. 14 (2014): 2950.
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Author's final manuscript
Abstract
One-pot solvothermal synthesis of a robust tetranuclear sodium hexakis(glycolato)tris(methanolato)aluminate complex Na[subscript 3][Al[subscript 4](OCH[subscript 3])[subscript 3](OCH[subscript 2]CH[subscript 2]O)[subscript 6]] via a modified yet rigorous base-catalyzed transesterification mechanism is presented here. Single crystal X-ray diffraction (SCXRD) studies indicate that this unique Al complex contains three pentacoordinate Al[superscript 3+] ions, each bound to two bidentate ethylene glycolate chelators and one monodentate methanolate ligand. The remaining fourth Al[superscript 3+] ion is octahedrally coordinated to one oxygen atom from each of the six surrounding glycolate chelators, effectively stitching the three pentacoordinate Al moieties together into a novel tetranuclear Al complex. This aluminate complex is periodically self-assembled into well-ordered layers normal to the [110] axis with the intra-/inter-layer bonding involving extensive ionic bonds from the three charge-counterbalancing Na[superscript +] cations rather than the more typical hydrogen bonding interactions as a result of fewer free hydroxyl groups present in its structure. It can also serve as a valuable precursor toward the facile synthesis of high-surface-area alumina powders using a very efficient rapid pyrolysis technique.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Mechanical Engineering
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
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DOI of Published Version
https://doi.org/10.1039/C3CE42616E
