Sustaining syngas production at a near-unity H2/CO ratio in the photo-induced dry reforming of methane independent of the reactant gas composition†
Hiroaki
Kaneko, 
a
Yohei
Cho,
a
Tomotaka
Sugimura,
a
Ayako
Hashimoto,
b
Akira
Yamaguchi
a
and
Masahiro
Miyauchi
*a
a
Yohei
Cho,
a
Tomotaka
Sugimura,
a
Ayako
Hashimoto,
b
Akira
Yamaguchi
a
and
Masahiro
Miyauchi
*a
Abstract
A syngas was generated at a near-unity H2/CO ratio independent of the reactant gas composition over Rh-loaded strontium titanate in the photo-induced dry reforming of methane. Moreover, light irradiation inhibited side reactions, such as the reverse water gas shift reaction and the precipitation of the solid-state carbon. These results were not explained by thermodynamic equilibrium, but were presumably owing to the unique effect of the photogenerated electron–hole pairs.
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