Extended Data Fig. 4: Catalytic activity testing and characterization of Pt/!-Al2O3.
From: Templated encapsulation of platinum-based catalysts promotes high-temperature stability to 1,100 °C
a, Light-off curve measurements of fresh and aged Pt/!-Al2O3. Reaction conditions: 0.15 vol. % C3H6, 3 vol. % O2, and 5 vol. % steam, balance Ar (40 ml/min total flow). Aging performed in the reaction mixture at 800 °C for 2 h. b–e, Representative TEM images and particle size distributions of the fresh (b, c) and aged catalysts (d, e).
