Author/Authors :
Hamakawa، نويسنده , , S and Hayakawa، نويسنده , , T and Suzuki، نويسنده , , K and Murata، نويسنده , , K and Takehira، نويسنده , , K and Yoshino، نويسنده , , S and Nakamura، نويسنده , , J and Uchijima، نويسنده , , T، نويسنده ,
Abstract :
Ni metal supported on a perovskite-type oxide (Ca0.8Sr0.2Ti1−xFexO3−α) has been developed as a high-performance anode catalyst of an electrochemical membrane reactor for CH4 conversion into synthesis gas. Synthesis gas production has been accelerated by electrochemical oxygen pumping, and selectivity to CO at 900°C was almost 100%. The Ni/Ca0.8Sr0.2Ti0.9Fe0.1O3−α catalyst exhibits excellent stability for carbon deposition under the CH4 conversion compared with that over Ni/Al2O3 as a typical catalyst for CH4 conversion. This is attributed to the oxidation of carbon deposits by the lattice oxygen species migrating to the Ni–Ca0.8Sr0.2Ti0.9Fe0.1O3−α boundary with mixed conduction in Ca0.8Sr0.2Ti0.9Fe0.1O3−α.
Keywords :
membrane reactor , CH4 conversion , Ni/perovskite-type oxide , Synthesis gas , Mixed conduction
