info:eu-repo/semantics/article
Effect of Boron Promotion on Coke Formation during Propane Dehydrogenation over Pt/γ-Al 2 O 3 Catalysts
Fecha
2020-04Registro en:
Aly, Mostafa; Fornero, Esteban Luis; Leon-Garzon, Andres R.; Galvita, Vladimir V.; Saeys, Mark; Effect of Boron Promotion on Coke Formation during Propane Dehydrogenation over Pt/γ-Al 2 O 3 Catalysts; American Chemical Society; ACS Catalysis; 10; 4-2020; 5208-5216
2155-5435
CONICET Digital
CONICET
Autor
Aly, Mostafa
Fornero, Esteban Luis
Leon-Garzon, Andres R.
Galvita, Vladimir V.
Saeys, Mark
Resumen
The effect of boron promotion on the performance of 3 wt.% Pt/γ-Al2O3 catalysts during propane dehydrogenation was investigated. A series of boron-promoted Pt/XB-γ-Al2O3 catalysts were synthesized, tested, and characterized. The sequential impregnation of 1 wt.% boron and3 wt.% platinum decreases the amount of deposited carbon threefold, increases the propylene selectivity from 90% to 98%, andenhances the activityafter 12 h by 40%.Catalyst characterizationand thermodynamic DFT calculations suggest that boron forms a finely dispersed amorphous oxide on the γ-Al2O3 support and on the platinum particles, modifying both the selectivity of the metal sites and the strength and number of acid sites on the support.