Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts

Min Kang, Min Woo Song, Chang-Ha Lee

Research output: Contribution to journalArticle

251 Citations (Scopus)

Abstract

CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.

Original languageEnglish
Pages (from-to)143-156
Number of pages14
JournalApplied Catalysis A: General
Volume251
Issue number1
DOIs
Publication statusPublished - 2003 Sep 25

Fingerprint

Carbon Monoxide
Carbon monoxide
Catalyst activity
Oxidation
Catalysts
Cerium compounds
Composite materials
Cobalt
X ray photoelectron spectroscopy
Catalyst poisoning
X ray diffraction
Steam
Temperature programmed desorption
Carbon Dioxide
Water vapor
Carbon dioxide
Oxygen
Temperature
Oxides

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

Cite this

@article{b0d230a132ef4c84a31a713ec0f130d6,
title = "Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts",
abstract = "CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.",
author = "Min Kang and Song, {Min Woo} and Chang-Ha Lee",
year = "2003",
month = "9",
day = "25",
doi = "10.1016/S0926-860X(03)00324-7",
language = "English",
volume = "251",
pages = "143--156",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
number = "1",

}

Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts. / Kang, Min; Song, Min Woo; Lee, Chang-Ha.

In: Applied Catalysis A: General, Vol. 251, No. 1, 25.09.2003, p. 143-156.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts

AU - Kang, Min

AU - Song, Min Woo

AU - Lee, Chang-Ha

PY - 2003/9/25

Y1 - 2003/9/25

N2 - CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.

AB - CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.

UR - http://www.scopus.com/inward/record.url?scp=0041830145&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041830145&partnerID=8YFLogxK

U2 - 10.1016/S0926-860X(03)00324-7

DO - 10.1016/S0926-860X(03)00324-7

M3 - Article

AN - SCOPUS:0041830145

VL - 251

SP - 143

EP - 156

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 1

ER -