Catalytic combustion of hydrogen over La1-xSr xCoO3-δ + Co3O4 and LaMn 1-xCuxO3+δ under simulated MCFC anode off-gas conditions

Hee Jun Eom, Jun Ho Jang, Dae Won Lee, Seongmin Kim, Kwan Young Lee

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The activities of two perovskite catalysts, LaMn1-xCu xO3+δ (0 ≤ x ≤ 1) and La1-xSr xCoO3-δ (0 ≤ x ≤ 1), were tested for the catalytic combustion of hydrogen under simulated molten carbonate fuel cell (MCFC) anode off-gas conditions. The catalysts were prepared using the sol-gel citrate (SGC) method and were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis, oxygen temperature-programmed desorption (O2-TPD), and temperature-programmed reduction (TPR) in order to discriminate the major properties governing the activities of the catalysts. The activity of LaMn1-xCuxO3+δ was the highest at x = 0.4, at which the reducibility of B-site cations and mobility of active oxygen were the most prominent. The activity of La1-xSr xCoO3-δ was strongly related to the amount of oxygen vacancies, and the by-produced Co3O4 had a positive effect, which was the reason why the catalyst at x = 0.6 (a mixture of La 1-xSrxCoO3-δ + Co3O 4) was comparatively active to those at x = 0.2 and 0.4.

Original languageEnglish
Pages (from-to)48-54
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume349
Issue number1-2
DOIs
Publication statusPublished - 2011 Oct 1

Fingerprint

molten carbonate fuel cells
cell anodes
Molten carbonate fuel cells (MCFC)
Hydrogen
Anodes
Gases
catalysts
Catalysts
hydrogen
Temperature programmed desorption
gases
oxygen
Oxygen
Oxygen vacancies
citrates
Citric Acid
Perovskite
Sol-gels
Cations
Reactive Oxygen Species

Keywords

  • Hydrogen combustion
  • LaSrCoO
  • LaMn CuO
  • O -TPD
  • Perovskite
  • TPR

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Process Chemistry and Technology

Cite this

Catalytic combustion of hydrogen over La1-xSr xCoO3-δ + Co3O4 and LaMn 1-xCuxO3+δ under simulated MCFC anode off-gas conditions. / Eom, Hee Jun; Jang, Jun Ho; Lee, Dae Won; Kim, Seongmin; Lee, Kwan Young.

In: Journal of Molecular Catalysis A: Chemical, Vol. 349, No. 1-2, 01.10.2011, p. 48-54.

Research output: Contribution to journalArticle

@article{a9b76da5ddc9406a833603a6ae8b4109,
title = "Catalytic combustion of hydrogen over La1-xSr xCoO3-δ + Co3O4 and LaMn 1-xCuxO3+δ under simulated MCFC anode off-gas conditions",
abstract = "The activities of two perovskite catalysts, LaMn1-xCu xO3+δ (0 ≤ x ≤ 1) and La1-xSr xCoO3-δ (0 ≤ x ≤ 1), were tested for the catalytic combustion of hydrogen under simulated molten carbonate fuel cell (MCFC) anode off-gas conditions. The catalysts were prepared using the sol-gel citrate (SGC) method and were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis, oxygen temperature-programmed desorption (O2-TPD), and temperature-programmed reduction (TPR) in order to discriminate the major properties governing the activities of the catalysts. The activity of LaMn1-xCuxO3+δ was the highest at x = 0.4, at which the reducibility of B-site cations and mobility of active oxygen were the most prominent. The activity of La1-xSr xCoO3-δ was strongly related to the amount of oxygen vacancies, and the by-produced Co3O4 had a positive effect, which was the reason why the catalyst at x = 0.6 (a mixture of La 1-xSrxCoO3-δ + Co3O 4) was comparatively active to those at x = 0.2 and 0.4.",
keywords = "Hydrogen combustion, LaSrCoO, LaMn CuO, O -TPD, Perovskite, TPR",
author = "Eom, {Hee Jun} and Jang, {Jun Ho} and Lee, {Dae Won} and Seongmin Kim and Lee, {Kwan Young}",
year = "2011",
month = "10",
day = "1",
doi = "10.1016/j.molcata.2011.08.017",
language = "English",
volume = "349",
pages = "48--54",
journal = "Journal of Molecular Catalysis A: Chemical",
issn = "1381-1169",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Catalytic combustion of hydrogen over La1-xSr xCoO3-δ + Co3O4 and LaMn 1-xCuxO3+δ under simulated MCFC anode off-gas conditions

AU - Eom, Hee Jun

AU - Jang, Jun Ho

AU - Lee, Dae Won

AU - Kim, Seongmin

AU - Lee, Kwan Young

PY - 2011/10/1

Y1 - 2011/10/1

N2 - The activities of two perovskite catalysts, LaMn1-xCu xO3+δ (0 ≤ x ≤ 1) and La1-xSr xCoO3-δ (0 ≤ x ≤ 1), were tested for the catalytic combustion of hydrogen under simulated molten carbonate fuel cell (MCFC) anode off-gas conditions. The catalysts were prepared using the sol-gel citrate (SGC) method and were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis, oxygen temperature-programmed desorption (O2-TPD), and temperature-programmed reduction (TPR) in order to discriminate the major properties governing the activities of the catalysts. The activity of LaMn1-xCuxO3+δ was the highest at x = 0.4, at which the reducibility of B-site cations and mobility of active oxygen were the most prominent. The activity of La1-xSr xCoO3-δ was strongly related to the amount of oxygen vacancies, and the by-produced Co3O4 had a positive effect, which was the reason why the catalyst at x = 0.6 (a mixture of La 1-xSrxCoO3-δ + Co3O 4) was comparatively active to those at x = 0.2 and 0.4.

AB - The activities of two perovskite catalysts, LaMn1-xCu xO3+δ (0 ≤ x ≤ 1) and La1-xSr xCoO3-δ (0 ≤ x ≤ 1), were tested for the catalytic combustion of hydrogen under simulated molten carbonate fuel cell (MCFC) anode off-gas conditions. The catalysts were prepared using the sol-gel citrate (SGC) method and were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis, oxygen temperature-programmed desorption (O2-TPD), and temperature-programmed reduction (TPR) in order to discriminate the major properties governing the activities of the catalysts. The activity of LaMn1-xCuxO3+δ was the highest at x = 0.4, at which the reducibility of B-site cations and mobility of active oxygen were the most prominent. The activity of La1-xSr xCoO3-δ was strongly related to the amount of oxygen vacancies, and the by-produced Co3O4 had a positive effect, which was the reason why the catalyst at x = 0.6 (a mixture of La 1-xSrxCoO3-δ + Co3O 4) was comparatively active to those at x = 0.2 and 0.4.

KW - Hydrogen combustion

KW - LaSrCoO

KW - LaMn CuO

KW - O -TPD

KW - Perovskite

KW - TPR

UR - http://www.scopus.com/inward/record.url?scp=80053648382&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053648382&partnerID=8YFLogxK

U2 - 10.1016/j.molcata.2011.08.017

DO - 10.1016/j.molcata.2011.08.017

M3 - Article

AN - SCOPUS:80053648382

VL - 349

SP - 48

EP - 54

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

SN - 1381-1169

IS - 1-2

ER -