首页|Enhancement of toluene hydrogenation activity of supported Pt nanoparticles with increasing the crystallinity of Pt
Enhancement of toluene hydrogenation activity of supported Pt nanoparticles with increasing the crystallinity of Pt
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NSTL
Elsevier
The activity of Pt/Al2O3 in the hydrogenation of toluene (TOL) was found to monotonically increase in line with an increase in the Pt particle size from 1.0 to 2.5 nm, but was constant for a size above 2.5 nm. Comparing different crystalline phases of Al2O3, the activity of Pt/gamma-Al2O3 was found to be around 1.5 times higher than that of Pt/gamma-Al2O3 for the same Pt particle size. Scanning transmission electron microscopy showed the presence of amorphous Pt nanoparticles (NPs) with a size of < 2.0 nm and Pt nanocrystals (NCs) with a size of >= 2.0 nm on Al2O3. Furthermore, the fraction of amorphous Pt NPs in Pt/gamma-Al2O3 was higher than that in Pt/gamma-Al2O3. Pt NCs were shown to be more active than the amorphous Pt NPs in the hydrogenation of TOL owing to them having an abundance of Pt plane.
NSTL
Elsevier
