Abstract
We found that methane was selectively oxidized by water to give C2 hydrocarbons and hydrogen on ATi1−xBxO3−δ (A=Sr, Ba, B=Mg, Ca). The coupling activity and selectivity on SrTi0.4Mg0.6O3−δ in the presence of steam was ∼95%, which was much higher than that on pure SrTiO3. This suggests that the selective oxidative coupling of methane by water was catalyzed by the oxide ion defects on ATi1−xBxO3−δ (A=Sr, Ba, B=Mg, Ca).
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