Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide

C.-Y. Yoo; Bernard A. Boukamp; Henricus J.M. Bouwmeester

doi:10.1007/s10008-010-1168-8

Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide

C.-Y. Yoo, Bernard A. Boukamp, Henricus J.M. Bouwmeester

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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 language	English
Pages (from-to)	231-236
Journal	Journal of solid state electrochemistry
Volume	15
Issue number	2
DOIs	https://doi.org/10.1007/s10008-010-1168-8
Publication status	Published - 2011

Keywords

METIS-273804
IR-76492

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10.1007/s10008-010-1168-8

oxygen

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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.}",

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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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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

SN - 1432-8488

VL - 15

SP - 231

EP - 236

JO - Journal of solid state electrochemistry

JF - Journal of solid state electrochemistry

IS - 2

ER -

Oxygen surface exchange kinetics of erbia-stabilized bismuth oxide

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