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

Paul F. McMillan; Jason R. Diefenbacher; William Petuskey; Richard W. Goettler

doi:10.1016/j.jnoncrysol.2008.11.044

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

Paul F. McMillan, Jason R. Diefenbacher, William Petuskey, Richard W. Goettler

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We examined the solid-state water-soluble amorphous precursors that are formed by partial thermal decomposition of Al(NO₃)₃·9H₂O (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 ²⁷Al NMR spectroscopy. Species identified in the alumosols included the Al³⁺(H₂O)₆ monomer, the [AlO₄Al₁₂(OH)₂₄(H₂O)₁₂]⁷⁺(Al₁₃) Keggin ion, and the Al₃₀ polycation, [Al₃₀O₈(OH)₅₆(H₂O)₂₄]¹⁸⁺, as well as various other oligomers or nanoparticles containing IV-, V- and VI-coordinated Al³⁺ ions.

Original language	English (US)
Pages (from-to)	1539-1551
Number of pages	13
Journal	Journal of Non-Crystalline Solids
Volume	355
Issue number	28-30
DOIs	https://doi.org/10.1016/j.jnoncrysol.2008.11.044
State	Published - Aug 15 2009

Keywords

Crystallization
Phases and equilibria

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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title = "Water-soluble amorphous alumina-based ceramic precursors and alumosols: Structural and chemical characterization",

abstract = "We examined the solid-state water-soluble amorphous precursors that are formed by partial thermal decomposition of Al(NO3)3·9H2O (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 27Al NMR spectroscopy. Species identified in the alumosols included the Al3+(H2O)6 monomer, the [AlO4Al12(OH)24(H2O)12]7+(Al13) Keggin ion, and the Al30 polycation, [Al30O8(OH)56(H2O)24]18+, as well as various other oligomers or nanoparticles containing IV-, V- and VI-coordinated Al3+ ions.",

keywords = "Crystallization, Phases and equilibria",

author = "McMillan, {Paul F.} and Diefenbacher, {Jason R.} and William Petuskey and Goettler, {Richard W.}",

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T1 - Water-soluble amorphous alumina-based ceramic precursors and alumosols

T2 - Structural and chemical characterization

AU - McMillan, Paul F.

AU - Diefenbacher, Jason R.

AU - Petuskey, William

AU - Goettler, Richard W.

PY - 2009/8/15

Y1 - 2009/8/15

N2 - We examined the solid-state water-soluble amorphous precursors that are formed by partial thermal decomposition of Al(NO3)3·9H2O (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 27Al NMR spectroscopy. Species identified in the alumosols included the Al3+(H2O)6 monomer, the [AlO4Al12(OH)24(H2O)12]7+(Al13) Keggin ion, and the Al30 polycation, [Al30O8(OH)56(H2O)24]18+, as well as various other oligomers or nanoparticles containing IV-, V- and VI-coordinated Al3+ ions.

AB - We examined the solid-state water-soluble amorphous precursors that are formed by partial thermal decomposition of Al(NO3)3·9H2O (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 27Al NMR spectroscopy. Species identified in the alumosols included the Al3+(H2O)6 monomer, the [AlO4Al12(OH)24(H2O)12]7+(Al13) Keggin ion, and the Al30 polycation, [Al30O8(OH)56(H2O)24]18+, as well as various other oligomers or nanoparticles containing IV-, V- and VI-coordinated Al3+ ions.

KW - Crystallization

KW - Phases and equilibria

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