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Artículo

Selective ring opening of decalin on Rh-Pd/SiO2-Al2O3 bifunctional systems: Catalytic performance and deactivation

D'ippolito, Silvana AndreaIcon ; Pirault Roy, Laurence; Especel, Catherine; Epron, Florence; Pieck, Carlos LuisIcon
Fecha de publicación: 08/2018
Editorial: Elsevier Science
Revista: Fuel Processing Technology
ISSN: 0378-3820
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería de Procesos Químicos

Resumen

Ring opening of decalin was studied using Rh-Pd(x) catalysts supported on SiO2-Al2O3, prepared by coimpregnation with a variable total metallic content (x = 1, 1.5 and 2 wt%) while maintaining constant the Rh/Pd atomic ratio (equal to 1). The catalytic performances of these bimetallic systems were compared to those of monometallic Pd and Rh (1 wt%) catalysts. Bimetallic Rh-Pd(x) catalysts were unable to achieve decalin conversion and ring opening selectivity as high as those obtained using the Rh catalyst (~71 and ~67%, respectively, after 6 h reaction time). The principal cause was the reduction of the hydrogenolytic activity and acidity caused by the combination of Pd and Rh. In the case of the bimetallic Rh-Pd(x) samples, an increase in the metal content favored the formation of dehydrogenated products, reduced cracking (by reducing the concentration of strong acid sites) and increased coke deposition during decalin ring opening. Conversely, the Rh catalyst showed less deactivation since its efficient hydrogenolytic character eliminates coke precursors.
Palabras clave: BIFUNCTIONAL CATALYSTS , BIMETALLIC CATALYSTS , DECALIN , RH-PD , RING OPENING
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/88234
URL: http://linkinghub.elsevier.com/retrieve/pii/S0378382018300341
DOI: http://dx.doi.org/10.1016/j.fuproc.2018.04.008
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Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
D'ippolito, Silvana Andrea; Pirault Roy, Laurence; Especel, Catherine; Epron, Florence; Pieck, Carlos Luis; Selective ring opening of decalin on Rh-Pd/SiO2-Al2O3 bifunctional systems: Catalytic performance and deactivation; Elsevier Science; Fuel Processing Technology; 177; 8-2018; 6-15
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