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Artículo

Pt-Pd/WO3-ZrO2 catalysts for isomerization-cracking of long paraffins

Busto, MarianaIcon ; Benitez, Viviana MonicaIcon ; Vera, Carlos RomanIcon ; Grau, Javier MarioIcon ; Yori, Juan CarlosIcon
Fecha de publicación: 09/2008
Editorial: Elsevier Science
Revista: Applied Catalysis A: General
ISSN: 0926-860X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

The objective of this work was to optimize the acid function and metallic function of a Pt-Pd/WO3-ZrO2 catalyst for isomerization-cracking of long paraffins. The calcination temperature and the W content were the preparation variables varied and studied. The catalysts were tested in the reaction of n-decane isomerization-cracking. The focus of the optimization was put on the synthesis of a catalyst with a good isomerizing activity and a minimum activity for the formation of light gases. In this way an isomerizate of high octane number and high liquid yield would be obtained and used for blending into the gasoline pool. The catalysts were further characterized by temperature programmed desorption of probe molecules (TPD). Varying both the W content and the calcination temperature enabled the regulation of the acid function properties. Thus both the activity and selectivity could be fine-tuned. The highest activity was obtained with the samples with a 15% of W and calcined at 700 °C. The samples calcined at 700 °C were also the most stable ones, i.e. the activity of the acid function was less affected by coking. All the prepared catalysts produced a high octane number gain that was between 75 and 95 points and low yields of light gases (<10%). Deactivation by carbonaceous deposits was attributed to coking on Lewis acid sites.
Palabras clave: Acid Catalysts , Cracking , Isomerization , Long Paraffins
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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/11336/65252
DOI: http://dx.doi.org/10.1016/j.apcata.2008.06.003
Colecciones
Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
Busto, Mariana; Benitez, Viviana Monica; Vera, Carlos Roman; Grau, Javier Mario; Yori, Juan Carlos; Pt-Pd/WO3-ZrO2 catalysts for isomerization-cracking of long paraffins; Elsevier Science; Applied Catalysis A: General; 347; 2; 9-2008; 117-125
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