Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments

Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Beitrag in Buch/Sammelwerk › Forschung › Peer-Review

Autorschaft

  • T. Debnath
  • C. H. Rüscher
  • P. Fielitz
  • S. Ohmann
  • G. Borchardt

Organisationseinheiten

Externe Organisationen

  • Technische Universität Clausthal
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Details

OriginalspracheEnglisch
Titel des SammelwerksCeramics for Environmental and Energy Applications
Herausgeber (Verlag)Wiley-Blackwell
Seiten71-78
Seitenumfang8
ISBN (elektronisch)9780470909874
ISBN (Print)9780470905470
PublikationsstatusVeröffentlicht - 28 Juni 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.

ASJC Scopus Sachgebiete

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Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments. / Debnath, T.; Rüscher, C. H.; Fielitz, P. et al.
Ceramics for Environmental and Energy Applications. Wiley-Blackwell, 2010. S. 71-78.

Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Beitrag in Buch/Sammelwerk › Forschung › Peer-Review

Debnath, T, Rüscher, CH, Fielitz, P, Ohmann, S & Borchardt, G 2010, Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments. in Ceramics for Environmental and Energy Applications. Wiley-Blackwell, S. 71-78. https://doi.org/10.1002/9780470909874.ch9
Debnath, T., Rüscher, C. H., Fielitz, P., Ohmann, S., & Borchardt, G. (2010). Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments. In Ceramics for Environmental and Energy Applications (S. 71-78). Wiley-Blackwell. https://doi.org/10.1002/9780470909874.ch9
Debnath T, Rüscher CH, Fielitz P, Ohmann S, Borchardt G. Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments. in Ceramics for Environmental and Energy Applications. Wiley-Blackwell. 2010. S. 71-78 doi: 10.1002/9780470909874.ch9
Debnath, T. ; Rüscher, C. H. ; Fielitz, P. et al. / Synthesis and characterization in the new system BI2(AL/GA)4O9 and 18O/16O exchange experiments. Ceramics for Environmental and Energy Applications. Wiley-Blackwell, 2010. S. 71-78
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AU - Debnath, T.

AU - Rüscher, C. H.

AU - Fielitz, P.

AU - Ohmann, S.

AU - Borchardt, G.

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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

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