Determination of oxygen surface exchange constant of LaNi0.6Fe0.4O3-δ coated with Ce0.9Gd0.1O1.95 by isotope exchange technique

R. A. Budiman; T. Miyazaki; S. Hashimoto; K. Yashiro; T. Kawada

doi:10.1016/j.ssi.2015.12.002

Determination of oxygen surface exchange constant of LaNi_0.6Fe_0.4O_3-δ coated with Ce_0.9Gd_0.1O_1.95 by isotope exchange technique

R. A. Budiman, T. Miyazaki, S. Hashimoto, K. Yashiro, T. Kawada

ENV - Environmental Studies for Advanced Society

Tohoku University

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The surface oxygen exchange coefficient (k∗) of LaNi_0.6Fe_0.4O_3-λ (LNF) coatedwith porous Ce_0.9Gd_0.1O_1.95 (GDC) was determined by the isotope exchange technique. The LNF coated with GDC was subjected to isotope exchange treatment where ¹⁶O₂ was abruptly changed into ¹⁸O₂ at a range temperature of 8731073 K under 10^-1 and 10^-2 bar of the oxygen partial pressure (p(O2)). The line-scanning mode of secondary ion mass spectrometry was used to determine the surface oxygen exchange of the LNF coated with GDC. The k∗ of LNF coated with GDC is enhanced compared to that of the bare LNF due to the formation of triple phase boundary between LNF, GDC, and gas phase of oxygen. The role of GDC is enhancing the incorporation process of the oxygen dissociated at the LNF surface. The adsorption and dissociation of oxygen takes place at LNF surface and incorporated into GDC porous.

Original language	English
Pages (from-to)	19-23
Number of pages	5
Journal	Solid State Ionics
Volume	286
DOIs	https://doi.org/10.1016/j.ssi.2015.12.002
Publication status	Published - 2016 Mar 1

Keywords

Isotope exchange
Secondary ion mass spectrometry
Surface oxygen exchange kinetics

Access to Document

10.1016/j.ssi.2015.12.002

Cite this

@article{b8d3783d6c624b4990b66f65f402771b,

title = "Determination of oxygen surface exchange constant of LaNi0.6Fe0.4O3-δ coated with Ce0.9Gd0.1O1.95 by isotope exchange technique",

abstract = "The surface oxygen exchange coefficient (k∗) of LaNi0.6Fe0.4O3-λ (LNF) coatedwith porous Ce0.9Gd0.1O1.95 (GDC) was determined by the isotope exchange technique. The LNF coated with GDC was subjected to isotope exchange treatment where 16O2 was abruptly changed into 18O2 at a range temperature of 8731073 K under 10-1 and 10-2 bar of the oxygen partial pressure (p(O2)). The line-scanning mode of secondary ion mass spectrometry was used to determine the surface oxygen exchange of the LNF coated with GDC. The k∗ of LNF coated with GDC is enhanced compared to that of the bare LNF due to the formation of triple phase boundary between LNF, GDC, and gas phase of oxygen. The role of GDC is enhancing the incorporation process of the oxygen dissociated at the LNF surface. The adsorption and dissociation of oxygen takes place at LNF surface and incorporated into GDC porous.",

keywords = "Isotope exchange, Secondary ion mass spectrometry, Surface oxygen exchange kinetics",

author = "Budiman, {R. A.} and T. Miyazaki and S. Hashimoto and K. Yashiro and T. Kawada",

note = "Funding Information: This work was supported by JST, Japan , as part of “Phase Interface Science for Highly Efficient Energy Utilization” project in strategic basic research program, CREST. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

year = "2016",

month = mar,

day = "1",

doi = "10.1016/j.ssi.2015.12.002",

language = "English",

volume = "286",

pages = "19--23",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

}

TY - JOUR

T1 - Determination of oxygen surface exchange constant of LaNi0.6Fe0.4O3-δ coated with Ce0.9Gd0.1O1.95 by isotope exchange technique

AU - Budiman, R. A.

AU - Miyazaki, T.

AU - Hashimoto, S.

AU - Yashiro, K.

AU - Kawada, T.

N1 - Funding Information: This work was supported by JST, Japan , as part of “Phase Interface Science for Highly Efficient Energy Utilization” project in strategic basic research program, CREST. Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2016/3/1

Y1 - 2016/3/1

N2 - The surface oxygen exchange coefficient (k∗) of LaNi0.6Fe0.4O3-λ (LNF) coatedwith porous Ce0.9Gd0.1O1.95 (GDC) was determined by the isotope exchange technique. The LNF coated with GDC was subjected to isotope exchange treatment where 16O2 was abruptly changed into 18O2 at a range temperature of 8731073 K under 10-1 and 10-2 bar of the oxygen partial pressure (p(O2)). The line-scanning mode of secondary ion mass spectrometry was used to determine the surface oxygen exchange of the LNF coated with GDC. The k∗ of LNF coated with GDC is enhanced compared to that of the bare LNF due to the formation of triple phase boundary between LNF, GDC, and gas phase of oxygen. The role of GDC is enhancing the incorporation process of the oxygen dissociated at the LNF surface. The adsorption and dissociation of oxygen takes place at LNF surface and incorporated into GDC porous.

AB - The surface oxygen exchange coefficient (k∗) of LaNi0.6Fe0.4O3-λ (LNF) coatedwith porous Ce0.9Gd0.1O1.95 (GDC) was determined by the isotope exchange technique. The LNF coated with GDC was subjected to isotope exchange treatment where 16O2 was abruptly changed into 18O2 at a range temperature of 8731073 K under 10-1 and 10-2 bar of the oxygen partial pressure (p(O2)). The line-scanning mode of secondary ion mass spectrometry was used to determine the surface oxygen exchange of the LNF coated with GDC. The k∗ of LNF coated with GDC is enhanced compared to that of the bare LNF due to the formation of triple phase boundary between LNF, GDC, and gas phase of oxygen. The role of GDC is enhancing the incorporation process of the oxygen dissociated at the LNF surface. The adsorption and dissociation of oxygen takes place at LNF surface and incorporated into GDC porous.

KW - Isotope exchange

KW - Secondary ion mass spectrometry

KW - Surface oxygen exchange kinetics

UR - http://www.scopus.com/inward/record.url?scp=84955570562&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84955570562&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2015.12.002

DO - 10.1016/j.ssi.2015.12.002

M3 - Article

AN - SCOPUS:84955570562

SN - 0167-2738

VL - 286

SP - 19

EP - 23

JO - Solid State Ionics

JF - Solid State Ionics

ER -

Determination of oxygen surface exchange constant of LaNi_0.6Fe_0.4O_3-δ coated with Ce_0.9Gd_0.1O_1.95 by isotope exchange technique

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this