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Influence of dopant metal ions on the formation of cordierite using combined SAXS/WAXS and EXAFS/WAXS techniques

Sankar, G; Dent, AJ; Dobson, B; Bras, W; (2016) Influence of dopant metal ions on the formation of cordierite using combined SAXS/WAXS and EXAFS/WAXS techniques. Journal of Non-Crystalline Solids , 451 pp. 16-22. 10.1016/j.jnoncrysol.2016.07.030. Green open access

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Abstract

Time-resolved combined scattering and spectroscopic techniques were used to understand in detail the formation of cordierite ceramic from two sources, (a) zeolite B and (b) cordierite glass systems. Time-resolved in situ combined EXAFS/XRD (at the Zn K-edge) investigation of the zinc oxide mixed zeolite B reveal that a series of transformations occur before the formation of cordierite ceramic. In particular the study revealed that addition of small amounts of zinc oxide promote the transformation of cordierite, through the formation of ZnAl2O4, at lower temperatures compared to the system without zinc oxide. Using in situ time-resolved SAXS/WAXS technique chromium doped in the cordierite glass system was investigated which revealed that, in addition to the formation of phase pure cordierite phase some amount of MgCr2O4 spinel phase are also produced.

Type: Article
Title: Influence of dopant metal ions on the formation of cordierite using combined SAXS/WAXS and EXAFS/WAXS techniques
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jnoncrysol.2016.07.030
Publisher version: https://doi.org/10.1016/j.jnoncrysol.2016.07.030
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10066153
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