Surface Protonics Promotes Catalysis

R. Manabe, S. Okada, R. Inagaki, K. Oshima, Shuhei Ogo, Yasushi Sekine

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Catalytic steam reforming of methane for hydrogen production proceeds even at 473 K over 1 wt% Pd/CeO2 catalyst in an electric field, thanks to the surface protonics. Kinetic analyses demonstrated the synergetic effect between catalytic reaction and electric field, revealing strengthened water pressure dependence of the reaction rate when applying an electric field, with one-third the apparent activation energy at the lower reaction temperature range. Operando-IR measurements revealed that proton conduction via adsorbed water on the catalyst surface occurred during electric field application. Methane was activated by proton collision at the Pd-CeO2 interface, based on the inverse kinetic isotope effect. Proton conduction on the catalyst surface plays an important role in methane activation at low temperature. This report is the first describing promotion of the catalytic reaction by surface protonics.

Original languageEnglish
Article number38007
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 2016 Dec 1

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Catalysis
Methane
Electric fields
Protons
Catalysts
Catalytic reforming
Kinetics
Water
Steam reforming
Hydrogen production
Isotopes
Reaction rates
Activation energy
Chemical activation
Temperature

ASJC Scopus subject areas

  • General

Cite this

Surface Protonics Promotes Catalysis. / Manabe, R.; Okada, S.; Inagaki, R.; Oshima, K.; Ogo, Shuhei; Sekine, Yasushi.

In: Scientific Reports, Vol. 6, 38007, 01.12.2016.

Research output: Contribution to journalArticle

Manabe, R. ; Okada, S. ; Inagaki, R. ; Oshima, K. ; Ogo, Shuhei ; Sekine, Yasushi. / Surface Protonics Promotes Catalysis. In: Scientific Reports. 2016 ; Vol. 6.
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