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Artículo

Influence of the metallic content on Pt-Ir/Nb 2 O 5 catalysts for decalin selective ring opening

Benitez, Viviana MonicaIcon ; de Lima, Simone; Rangel, Maria do Carmo; Ruiz, Doriz; Reyes, Patricio; Pieck, Carlos LuisIcon
Fecha de publicación: 07/2017
Editorial: Elsevier Science
Revista: Catalysis Today
ISSN: 0920-5861
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

Ring opening of naphthenic rings on Pt-Ir catalysts supported on Nb2O5 was studied in this work. The catalysts were prepared by impregnation. In the case ofthe bimetallic catalyst,the total metallic load was kept constant while varying the individual quantity of impregnated Ir and Pt. The samples were characterized by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, N2 sorption, NH3 TPD and model reactions (cyclohexane dehydrogenation and cyclopentane hydrogenolysis). The decalin ring opening capacity of the catalysts was evaluated. Monometallic Ir and Pt catalysts as well as bimetallic catalysts were active towards cyclohexane dehydrogenation and cyclopentane hydrogenolysis. Regarding the bimetallic catalysts, an increase on the Pt content promoted the cyclohexane dehydrogenationwhile hindering the hydrogenolytic activity. In the selective ring opening of decalin, the bimetallic catalysts presented activities comparable to the monometallic catalysts. Nonetheless, Ir(0.3%)/Nb2O5 catalyst presented the highest selectivity towards ring opening products with the lowest selectivity towards dehydrogenated products.
Palabras clave: Decalin , Platinum , Iridium , Niobium , Sro
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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/11336/46942
DOI: https://dx.doi.org/10.1016/j.cattod.2016.10.004
URL: https://www.sciencedirect.com/science/article/pii/S0920586116306241
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Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
Benitez, Viviana Monica; de Lima, Simone; Rangel, Maria do Carmo; Ruiz, Doriz; Reyes, Patricio; et al.; Influence of the metallic content on Pt-Ir/Nb 2 O 5 catalysts for decalin selective ring opening; Elsevier Science; Catalysis Today; 289; 7-2017; 53-61
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