Role of Electric Field and Surface Protonics on Low-Temperature Catalytic Dry Reforming of Methane

Tomohiro Yabe, Kensei Yamada, Kota Murakami, Kenta Toko, Kazuharu Ito, Takuma Higo, Shuhei Ogo, Yasushi Sekine

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The role of the electric field and surface protonics on low temperature catalytic dry reforming of methane was investigated over 1 wt %Ni/10 mol %La-ZrO 2 catalyst, which shows very high catalytic activity even at temperatures as low as 473 K. We investigated kinetic analyses using isotope and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and kinetic analyses revealed synergetic effects between the catalytic reaction and the electric field with less than one-fifth the apparent activation energy at low reaction temperatures. Results of kinetic investigations using isotopes such as CD 4 and 18 O 2 , in situ DRIFTS in the electric field, and density functional theory calculation indicate that methane dry reforming proceeds well by virtue of surface protonics. CH 4 and CO 2 were activated by proton collision at the Ni-La-ZrO 2 interface based on the "inverse" kinetic isotope effect.

Original languageEnglish
Pages (from-to)5690-5697
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume7
Issue number6
DOIs
Publication statusPublished - 2019 Mar 18

Keywords

  • Carbon dioxide utilization
  • Dry reforming of methane
  • Ni catalyst
  • Surface protonics

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

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