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Phase development in La2O3 doped Al2O3 : TiO2 ceramic membranes
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UNSPECIFIED (1999) Phase development in La2O3 doped Al2O3 : TiO2 ceramic membranes. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 19 (10). pp. 1847-1857. ISSN 0955-2219.
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Abstract
The phase development of sol derived diphasic Al2O3:TiO2 membranes doped with La2O3 is described together with their pore structure and microstructure. These nanostructrual membranes have been characterised using Al-27 MAS-NMR, TEM, BET, XRD and thermal analysis in an attempt to derive a comprehensive description. The membrane materials have been subjected to heat treatments ranging from 275 degrees C to 1200 degrees C in air. Doping the diphasic membrane has been shown to increase the transformation temperature of the low temperature phases (gamma-alumina and anatase) by as much as 200 degrees C. There is indication that La2O3 doping also retards the reorganisation of Al in the gamma-alumina phase preventing it from forming other intermediate aluminas. (C) 1999 Published by Elsevier Science Limited. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TP Chemical technology | ||||
Journal or Publication Title: | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | ||||
Publisher: | ELSEVIER SCI LTD | ||||
ISSN: | 0955-2219 | ||||
Official Date: | 1999 | ||||
Dates: |
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Volume: | 19 | ||||
Number: | 10 | ||||
Number of Pages: | 11 | ||||
Page Range: | pp. 1847-1857 | ||||
Publication Status: | Published |
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