INTEC 05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Effect of Boron Promotion on Coke Formation during Propane Dehydrogenation over Pt/γ-Al 2 O 3 Catalysts
Autor/es:
FORNERO, ESTEBAN L.; SAEYS, MARK; LEON-GARZON, ANDRES R.; ALY, MOSTAFA; GALVITA, VLADIMIR V.
Revista:
ACS Catalysis
Editorial:
American Chemical Society
Referencias:
Lugar: Washington, DC; Año: 2020 vol. 10 p. 5208 - 5216
ISSN:
2155-5435
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.
