Oxidative coupling of methane using carbon dioxide in an electric field over La-ZrO2 catalyst at low external temperature

Kazumasa Oshima, Keisuke Tanaka, Tomohiro Yabe, Eiichi Kikuchi, Yasushi Sekine

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Oxidative coupling of methane using carbon dioxide (CO2-OCM) as an oxidant was conducted over several La- and Zr-based catalysts in an electric field at low external temperature of 423 K. Higher catalytic activity was obtained than in a conventional catalytic reaction over 10 mol% lanthanum-doped zirconia (La-ZrO2) in the electric field. Although the catalytic activity for the CO2-OCM was low over the La-ZrO2 at 1173 K without the application of the electric field, the electric field promoted catalytic activity even at 423 K external temperature. We optimized the amount of doping-La in the La-ZrO2 system, and characterized the effect of doping-La with XRD measurement. From these examinations, 5 mol% La-ZrO 2 catalyst showed the highest activity. High catalytic activity was provided by the synergistic effect of the La-cation, tetragonal-ZrO2, and the electric field.

Original languageEnglish
Pages (from-to)879-881
Number of pages3
JournalFuel
Volume107
DOIs
Publication statusPublished - 2013

Fingerprint

Methane
Carbon Dioxide
Catalyst activity
Carbon dioxide
Electric fields
Catalysts
Temperature
Doping (additives)
Lanthanum
Oxidants
Zirconia
Cations
Positive ions

Keywords

  • Carbon dioxide
  • Electric field
  • La-ZrO catalyst
  • Oxidative coupling of methane

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)
  • Organic Chemistry

Cite this

Oxidative coupling of methane using carbon dioxide in an electric field over La-ZrO2 catalyst at low external temperature. / Oshima, Kazumasa; Tanaka, Keisuke; Yabe, Tomohiro; Kikuchi, Eiichi; Sekine, Yasushi.

In: Fuel, Vol. 107, 2013, p. 879-881.

Research output: Contribution to journalArticle

Oshima, Kazumasa ; Tanaka, Keisuke ; Yabe, Tomohiro ; Kikuchi, Eiichi ; Sekine, Yasushi. / Oxidative coupling of methane using carbon dioxide in an electric field over La-ZrO2 catalyst at low external temperature. In: Fuel. 2013 ; Vol. 107. pp. 879-881.
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AU - Oshima, Kazumasa

AU - Tanaka, Keisuke

AU - Yabe, Tomohiro

AU - Kikuchi, Eiichi

AU - Sekine, Yasushi

PY - 2013

Y1 - 2013

N2 - Oxidative coupling of methane using carbon dioxide (CO2-OCM) as an oxidant was conducted over several La- and Zr-based catalysts in an electric field at low external temperature of 423 K. Higher catalytic activity was obtained than in a conventional catalytic reaction over 10 mol% lanthanum-doped zirconia (La-ZrO2) in the electric field. Although the catalytic activity for the CO2-OCM was low over the La-ZrO2 at 1173 K without the application of the electric field, the electric field promoted catalytic activity even at 423 K external temperature. We optimized the amount of doping-La in the La-ZrO2 system, and characterized the effect of doping-La with XRD measurement. From these examinations, 5 mol% La-ZrO 2 catalyst showed the highest activity. High catalytic activity was provided by the synergistic effect of the La-cation, tetragonal-ZrO2, and the electric field.

AB - Oxidative coupling of methane using carbon dioxide (CO2-OCM) as an oxidant was conducted over several La- and Zr-based catalysts in an electric field at low external temperature of 423 K. Higher catalytic activity was obtained than in a conventional catalytic reaction over 10 mol% lanthanum-doped zirconia (La-ZrO2) in the electric field. Although the catalytic activity for the CO2-OCM was low over the La-ZrO2 at 1173 K without the application of the electric field, the electric field promoted catalytic activity even at 423 K external temperature. We optimized the amount of doping-La in the La-ZrO2 system, and characterized the effect of doping-La with XRD measurement. From these examinations, 5 mol% La-ZrO 2 catalyst showed the highest activity. High catalytic activity was provided by the synergistic effect of the La-cation, tetragonal-ZrO2, and the electric field.

KW - Carbon dioxide

KW - Electric field

KW - La-ZrO catalyst

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