Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide

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Abstract

The surface oxygen exchange kinetics of bismuth oxide stabilized with 25 mol% erbia (BE25) has been studied in the temperature and pO2 ranges 773–1,023 K and 0.1– 0.95 atm, respectively, using pulse-response 18O–16O isotope exchange measurements. The results indicate that BE25 exhibits a comparatively high exchange rate, which is rate determined by the dissociative adsorption of oxygen. Defect chemical considerations and the observed pO2 1=2 dependence of the rate of dissociative oxygen adsorption suggest electron transfer to intermediate superoxide ions as the rate determining step in surface oxygen exchange on BE25
Original languageEnglish
Pages (from-to)231-236
JournalJournal of solid state electrochemistry
Volume15
Issue number2
DOIs
Publication statusPublished - 2011

Fingerprint

bismuth oxides
Bismuth
Oxygen
Kinetics
Oxides
kinetics
oxygen
Adsorption
adsorption
inorganic peroxides
Superoxides
Ion exchange
Ions
bismuth oxide
pulses
ions
Temperature
temperature

Keywords

  • METIS-273804
  • IR-76492

Cite this

@article{5474ea2490424f7fb9028a6a60c76fe9,
title = "Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide",
abstract = "The surface oxygen exchange kinetics of bismuth oxide stabilized with 25 mol{\%} erbia (BE25) has been studied in the temperature and pO2 ranges 773–1,023 K and 0.1– 0.95 atm, respectively, using pulse-response 18O–16O isotope exchange measurements. The results indicate that BE25 exhibits a comparatively high exchange rate, which is rate determined by the dissociative adsorption of oxygen. Defect chemical considerations and the observed pO2 1=2 dependence of the rate of dissociative oxygen adsorption suggest electron transfer to intermediate superoxide ions as the rate determining step in surface oxygen exchange on BE25",
keywords = "METIS-273804, IR-76492",
author = "C.-Y. Yoo and Boukamp, {Bernard A.} and Bouwmeester, {Henricus J.M.}",
note = "Open access article",
year = "2011",
doi = "10.1007/s10008-010-1168-8",
language = "English",
volume = "15",
pages = "231--236",
journal = "Journal of solid state electrochemistry",
issn = "1432-8488",
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}

Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide. / Yoo, C.-Y.; Boukamp, Bernard A.; Bouwmeester, Henricus J.M.

In: Journal of solid state electrochemistry, Vol. 15, No. 2, 2011, p. 231-236.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide

AU - Yoo, C.-Y.

AU - Boukamp, Bernard A.

AU - Bouwmeester, Henricus J.M.

N1 - Open access article

PY - 2011

Y1 - 2011

N2 - The surface oxygen exchange kinetics of bismuth oxide stabilized with 25 mol% erbia (BE25) has been studied in the temperature and pO2 ranges 773–1,023 K and 0.1– 0.95 atm, respectively, using pulse-response 18O–16O isotope exchange measurements. The results indicate that BE25 exhibits a comparatively high exchange rate, which is rate determined by the dissociative adsorption of oxygen. Defect chemical considerations and the observed pO2 1=2 dependence of the rate of dissociative oxygen adsorption suggest electron transfer to intermediate superoxide ions as the rate determining step in surface oxygen exchange on BE25

AB - The surface oxygen exchange kinetics of bismuth oxide stabilized with 25 mol% erbia (BE25) has been studied in the temperature and pO2 ranges 773–1,023 K and 0.1– 0.95 atm, respectively, using pulse-response 18O–16O isotope exchange measurements. The results indicate that BE25 exhibits a comparatively high exchange rate, which is rate determined by the dissociative adsorption of oxygen. Defect chemical considerations and the observed pO2 1=2 dependence of the rate of dissociative oxygen adsorption suggest electron transfer to intermediate superoxide ions as the rate determining step in surface oxygen exchange on BE25

KW - METIS-273804

KW - IR-76492

U2 - 10.1007/s10008-010-1168-8

DO - 10.1007/s10008-010-1168-8

M3 - Article

VL - 15

SP - 231

EP - 236

JO - Journal of solid state electrochemistry

JF - Journal of solid state electrochemistry

SN - 1432-8488

IS - 2

ER -