Mechanism of oxygen ion transfer in oxide melts based on V 2 O 5

A. A. Klimashin; V. V. Belousov

doi:10.1134/S0036024416010143

Mechanism of oxygen ion transfer in oxide melts based on V₂O₅

Authors: Klimashin A.A.¹, Belousov V.V.¹
Affiliations:
1. A.A. Baikov Institute of Metallurgy and Materials Science
Issue: Vol 90, No 1 (2016)
Pages: 54-59
Section: Chemical Kinetics and Catalysis
URL: https://journals.rcsi.science/0036-0244/article/view/167534
DOI: https://doi.org/10.1134/S0036024416010143
ID: 167534

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Abstract
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Abstract

A model of oxygen ion transport in molten V2O5 is proposed. Within the framework of this model, the values of the parabolic rate constant of the catastrophic oxidation of copper in contact with V₂O₅ and oxygen flux through an ion transport membrane with liquid-channel grain-boundary structure on the basis of V₂O₅ are calculated as k′′ = 2.4 × 10^–5 kg²/(m⁴ s) and J = 2.7 × 10^–4 mol/(m² s) at 700°C. These values are in agreement with the experimental data in order of magnitude, indicating the agreement between theory and experiment.

Keywords

oxide melts based on V₂O₅, oxygen ions, transport mechanism

About the authors

A. A. Klimashin

A.A. Baikov Institute of Metallurgy and Materials Science

Email: vbelousov@imet.ac.ru
Russian Federation, Moscow, 119991

V. V. Belousov