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Thermal Stabilisation of Alumina Fibres

Michael J. Dreelan and Odilla E. Finlayson
Proceedings of the Royal Irish Academy. Section B: Biological, Geological, and Chemical Science
Vol. 89B (1989), pp. 411-417
Published by: Royal Irish Academy
Stable URL: http://www.jstor.org/stable/20494528
Page Count: 7
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Thermal Stabilisation of Alumina Fibres
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Abstract

As an industrially important catalytic support material, a form of fibrous alumina, η-Al₂O₃, was investigated for its thermal stability. Cation addition was used as a means of improving the stability at elevated temperatures. The following cations were investigated: Ba²⁺, Ca²⁺, Ce³⁺, Cs⁺, La³⁺, Zr⁴⁺; the order of effectiveness as phase transfer inhibitors was found to be La³⁺ > Ce³⁺ = Cs⁺ > Zr⁴⁺ = Ba²⁺ = Ca²⁺. These results are compared to known methods of γ-Al₂O₃ thermal stabilisation.

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