Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes

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 27Al MAS-NMR, TEM, BET, XRD and thermal analysis in an attempt to derive a comprehensiv...

Full description

Bibliographic Details
Published in:Journal of the European Ceramic Society
Main Author: Stefan Björkert U.; Mayappan R.; Holland D.; Lewis M.H.
Format: Article
Language:English
Published: Elsevier BV 1999
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032696352&doi=10.1016%2fS0955-2219%2899%2900004-7&partnerID=40&md5=523e61a69519a9579d743d7753e7f4f0
id 2-s2.0-0032696352
spelling 2-s2.0-0032696352
Stefan Björkert U.; Mayappan R.; Holland D.; Lewis M.H.
Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
1999
Journal of the European Ceramic Society
19
10
10.1016/S0955-2219(99)00004-7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032696352&doi=10.1016%2fS0955-2219%2899%2900004-7&partnerID=40&md5=523e61a69519a9579d743d7753e7f4f0
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 27Al 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°C to 1200°C in air. Doping the diphasic membrane has been shown to increase the transformation temperature of the low temperature phases (γ-alumina and anatase) by as much as 200°C. There is indication that La2O3 doping also retards the reorganisation of Al in the γ-alumina phase preventing it from forming other intermediate aluminas.
Elsevier BV
09552219
English
Article

author Stefan Björkert U.; Mayappan R.; Holland D.; Lewis M.H.
spellingShingle Stefan Björkert U.; Mayappan R.; Holland D.; Lewis M.H.
Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
author_facet Stefan Björkert U.; Mayappan R.; Holland D.; Lewis M.H.
author_sort Stefan Björkert U.; Mayappan R.; Holland D.; Lewis M.H.
title Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
title_short Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
title_full Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
title_fullStr Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
title_full_unstemmed Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
title_sort Phase development in La2O3 doped Al2O3:TiO2 ceramic membranes
publishDate 1999
container_title Journal of the European Ceramic Society
container_volume 19
container_issue 10
doi_str_mv 10.1016/S0955-2219(99)00004-7
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032696352&doi=10.1016%2fS0955-2219%2899%2900004-7&partnerID=40&md5=523e61a69519a9579d743d7753e7f4f0
description 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 27Al 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°C to 1200°C in air. Doping the diphasic membrane has been shown to increase the transformation temperature of the low temperature phases (γ-alumina and anatase) by as much as 200°C. There is indication that La2O3 doping also retards the reorganisation of Al in the γ-alumina phase preventing it from forming other intermediate aluminas.
publisher Elsevier BV
issn 09552219
language English
format Article
accesstype
record_format scopus
collection Scopus
_version_ 1814778510574616576