Details
| Original language | English |
|---|---|
| Title of host publication | Ceramics for Environmental and Energy Applications |
| Publisher | Wiley-Blackwell |
| Pages | 71-78 |
| Number of pages | 8 |
| ISBN (electronic) | 9780470909874 |
| ISBN (print) | 9780470905470 |
| Publication status | Published - 28 Jun 2010 |
Abstract
Compositions in the new system Bi2(GaxAl1-x)4O9 (x = 0, 0.1, …., 1) having mullite-type structure were synthesized using precursor gels obtained from the solution of corresponding nitrates in glycerin. The effects of Ga/Al substitution were characterized by IR absorption spectroscopy and X-ray powder diffraction (XRD). The linear change in lattice parameters related on x indicate ideal solid solution behaviour. The splitting of the high frequency vibration mode in the mixed composition indicate the presence of Ga-Oc-Ga, Ga-Oc-Al and Al-Oc-Al bonds, where Oc is the common oxygen of the double tetrahedral unit. 18O/16O isotope exchange experiments (at 800°C) show the extraordinary dominance of the Oc atom in this vibration. The relative absorption intensities of the M-18Oc/M-16Oc vibrations used to estimate diffusion coefficient showing value of about 4*10-15 cm2/s and 1.1*10-18 cm2/s for Bi2Ga4O9 and Bi2Al4O9, respectively.
Keywords
- Glycerin, Isotope exchange experiments, Lattice parameters, Precursor gels, X-ray powder diffraction
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
- Materials Science(all)
- General Materials Science
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Ceramics for Environmental and Energy Applications. Wiley-Blackwell, 2010. p. 71-78.
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments
AU - Debnath, T.
AU - Rüscher, C. H.
AU - Fielitz, P.
AU - Ohmann, S.
AU - Borchardt, G.
PY - 2010/6/28
Y1 - 2010/6/28
N2 - Compositions in the new system Bi2(GaxAl1-x)4O9 (x = 0, 0.1, …., 1) having mullite-type structure were synthesized using precursor gels obtained from the solution of corresponding nitrates in glycerin. The effects of Ga/Al substitution were characterized by IR absorption spectroscopy and X-ray powder diffraction (XRD). The linear change in lattice parameters related on x indicate ideal solid solution behaviour. The splitting of the high frequency vibration mode in the mixed composition indicate the presence of Ga-Oc-Ga, Ga-Oc-Al and Al-Oc-Al bonds, where Oc is the common oxygen of the double tetrahedral unit. 18O/16O isotope exchange experiments (at 800°C) show the extraordinary dominance of the Oc atom in this vibration. The relative absorption intensities of the M-18Oc/M-16Oc vibrations used to estimate diffusion coefficient showing value of about 4*10-15 cm2/s and 1.1*10-18 cm2/s for Bi2Ga4O9 and Bi2Al4O9, respectively.
AB - Compositions in the new system Bi2(GaxAl1-x)4O9 (x = 0, 0.1, …., 1) having mullite-type structure were synthesized using precursor gels obtained from the solution of corresponding nitrates in glycerin. The effects of Ga/Al substitution were characterized by IR absorption spectroscopy and X-ray powder diffraction (XRD). The linear change in lattice parameters related on x indicate ideal solid solution behaviour. The splitting of the high frequency vibration mode in the mixed composition indicate the presence of Ga-Oc-Ga, Ga-Oc-Al and Al-Oc-Al bonds, where Oc is the common oxygen of the double tetrahedral unit. 18O/16O isotope exchange experiments (at 800°C) show the extraordinary dominance of the Oc atom in this vibration. The relative absorption intensities of the M-18Oc/M-16Oc vibrations used to estimate diffusion coefficient showing value of about 4*10-15 cm2/s and 1.1*10-18 cm2/s for Bi2Ga4O9 and Bi2Al4O9, respectively.
KW - Glycerin
KW - Isotope exchange experiments
KW - Lattice parameters
KW - Precursor gels
KW - X-ray powder diffraction
UR - http://www.scopus.com/inward/record.url?scp=85060574030&partnerID=8YFLogxK
U2 - 10.1002/9780470909874.ch9
DO - 10.1002/9780470909874.ch9
M3 - Contribution to book/anthology
AN - SCOPUS:85060574030
SN - 9780470905470
SP - 71
EP - 78
BT - Ceramics for Environmental and Energy Applications
PB - Wiley-Blackwell
ER -