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http://repositoriodigital.ipn.mx/handle/123456789/10686| Título : | NIMO SUPPORTED ACIDIC CATALYSTS FOR HEAVY OIL HYDROPROCESSING |
| Palabras clave : | NiW/SiO2-Al2O3 Acidic support SEM-EDX Cumene cracking |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | Catalysis Today |
| Descripción : | Large pore diameter Al2O3-SiO2 acidic mixed oxide supports were prepared by using homogeneous coprecipitation
method. The acidic properties of supports (oxide) and supported catalysts (sulfided) were
chemically probed with cumene cracking (HCR) into propane and benzene at atmospheric pressure and
400 8C. NiMo supported hydroprocessing catalysts activities were also evaluated with heavy Maya crude
oil. The use of acidic support is to optimize yield of high octane gasoline components, i.e. selective
cracking of complex crude oil molecule. The supported fresh and spent catalysts were characterized by
means of N2 adsorption–desorption and SEM–EDX spectroscopic techniques. The results point out that
deactivation takes place mainly at the entrance of pore due to coke deposition, while the depositions of
vanadium and nickel sulfidesmainly depend on the diameter of the pores. The results also indicated that
the deactivation due to carbon deposition is carried out at initial hours of the crude oil processing. The
large pore diameter catalyst contains higher amounts of deposited species, which are distributed
proportionally along the extrudate radius, while for smaller pore diameter catalyst the depositionmainly
occurs on the extrudate surface. http://www.sciencedirect.com/science/article/pii/S0920586108001247 |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/10686 |
| Otros identificadores : | 0920-5861 http://hdl.handle.net/123456789/168 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| art 2.pdf | 72.94 kB | Adobe PDF | Visualizar/Abrir |
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