Effect of CoMo/HSO3–functionalized MCM–41 over Heavy Oil
Persi Schacht,1 Julia Aguilar–Pliego,2 Marco Ramírez–Garnica,1 Sergio Ramírez,1 Ibrahim Abu3 and Luis Noreña–Franco2
1 Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas No. 152, México, DF 07730, México.
2 Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180, México, DF 02200, México.
3 Department of Chemical & Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada. T2N 1N4. pschacha@imp.mx
]]> Received March 5, 2010.
Abstract
The potential of Co–Mo metals supported on functionalized MCM–41 as catalyst to hydrodesulfurization of heavy oil has been explored in this work. The MCM–41 functionalized sample was synthesized according to methods previously reported in the literature. Co and Mo metals were incorporated into the support by simultaneous impregnation. The catalyst was characterized by specific surface area and X–Ray Diffraction. The pore channel of MCM–41 was confirmed by transmission electronic microscopy and infra red spectroscopy. Catalytic activity tests were carried out using heavy oil from Gulf of Mexico. The API gravity was increased from 12.5 to 20.2, the kinematics viscosity was decreased from 18,700 to 110 cSt at 298 K, the contents of asphaltene and sulfur were also reduced.
Keywords: Functionalized MCM–41, Heavy Oil, HDS.
Resumen
En el presente trabajo se explora el potencial del catalizador Co–Mo/MCM–41 funcionalizado en la reacción de hidroconversión de aceite crudo pesado. El material MCM–41 fue sintetizado conforme a métodos reportados en literatura. El Co y Mo se incorporaron al soporte empleando la técnica de impregnación simultánea. Así mismo, el catalizador sintetizado fue caracterizado determinando su área específica, difracción de rayos X; se confirmó su distribución de canales de poros por medio de microscopía electrónica de transmisión. También se estudiaron las propiedades ácidas por espectroscopia de infrarojo así como también de la adsorción de piridina. Para medir la actividad catalítica, se empleó aceite crudo pesado del Golfo de México. La gravedad API se incrementó de 12.5 a 20.2, la viscosidad cinemática se redujo de 18700 a 110 cSt determinada a 298 K, el contenido de asfaltenos y azufre también se reducen notablemente.
Palabras clave: MCM–41 funcionalizado, aceite pesado, HDS.
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