Extended Data Fig. 8: Catalytic activity testing of Pt@Al2O3 and Pd@Al2O3.
From: Templated encapsulation of platinum-based catalysts promotes high-temperature stability to 1,100 °C
a, Propene combustion activity for fresh Pt@Al2O3 and 1,100 °C aged Pt@Al2O3. Reaction mixture: 0.15 vol.% C3H6, 3 vol.% O2, and 5 vol.% steam. Aging performed at 1,100 °C for 5 h in air with 10 vol. % steam (40 ml/min total flow). b, TEM image of the 1,100 °C aged Pt@Al2O3 catalyst. c, d, TEM image and particle size distribution of as-synthesized Pd@Al2O3. e, Propene combustion activity for fresh Pd@Al2O3 and 1,100 °C aged Pd@Al2O3. Reaction mixture: 0.15 vol.% C3H6, 3 vol.% O2, and 5 vol.% steam. Aging performed at 1,100 °C for 5 h in air with 10 vol. % steam (40 ml/min total flow). f, TEM image of the 1,100 °C aged Pd@Al2O3 catalyst.
