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Water-soluble amorphous alumina-based ceramic precursors and alumosols: Structural and chemical characterization

McMillan, PF; Diefenbacher, JR; Petuskey, WT; Goettler, RW; (2009) Water-soluble amorphous alumina-based ceramic precursors and alumosols: Structural and chemical characterization. Journal of Non-Crystalline Solids , 355 (28-30) 1539 - 1551. 10.1016/j.jnoncrysol.2008.11.044.

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Abstract

We examined the solid-state water-soluble amorphous precursors that are formed by partial thermal decomposition of Al(NO)·9HO (aluminum nitrate nonahydrate: ANN) using Raman and FTIR and solid-state magic-angle spinning NMR spectroscopy. We also studied the species formed in the aqueous alumosols formed by dissolution of the pre-ceramic precursors using Al NMR spectroscopy. Species identified in the alumosols included the Al(HO) monomer, the [AlOAl(OH)(HO)](Al) Keggin ion, and the Al polycation, [AlO(OH)(HO)], as well as various other oligomers or nanoparticles containing IV-, V- and VI-coordinated Al ions. © 2009 Elsevier B.V. All rights reserved.

Type:Article
Title:Water-soluble amorphous alumina-based ceramic precursors and alumosols: Structural and chemical characterization
DOI:10.1016/j.jnoncrysol.2008.11.044
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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