Enthalpy of Formation and Lattice Enthalpy of Erbium-Substituted Bismuth Oxide

Erbium-substituted bismuth oxide with a composition of Bi 1.6 Er 0.4 O 3 was synthesized by the solid-phase reaction method. The compound is shown to have a cubic structure, space group Fm 3 m . The standard enthalpy of formation of Bi 1.6 Er 0.4 O 3 was determined from the measured enthalpies of di...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2024-09, Vol.98 (9), p.1941-1944
Main Authors: Elbaev, E. R., Matskevich, N. I., Luk’yanova, S. A., Zaitsev, V. P., Tkachev, E. N.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
To the Centenary of the Chemical Thermodynamics Laboratory of Moscow State University
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Summary:Erbium-substituted bismuth oxide with a composition of Bi 1.6 Er 0.4 O 3 was synthesized by the solid-phase reaction method. The compound is shown to have a cubic structure, space group Fm 3 m . The standard enthalpy of formation of Bi 1.6 Er 0.4 O 3 was determined from the measured enthalpies of dissolution of Bi 2 O 3 , ErCl 3 , and Bi 1.6 Er 0.4 O 3 in a 2 M HCl solution: Δ f H 0 (Bi 1.6 Er 0.4 O 3 (s)) = −819.0 ± 6.4 kJ/mol. The lattice enthalpy for the compound was calculated using the Born–Haber cycle: Δ lat H 0 (Bi 1.6 Er 0.4 O 3 (s)) = −13 227 kJ/mol.
ISSN:0036-0244
1531-863X
DOI:10.1134/S003602442470105X