Procedure to obtain a catalyst for the hydrodenitrogenation and hydrodesulfurization of middle and heavy oil fraction and the resulting product

• Main Authors: Rocha, Ernesto Galvan, Oviedo, Tomás Alberto Beltrán, de la Paz, Teresa de Jesús Cortez, Rivera, Blanca Lucía Medellín, Ramos, René Zárate
• Format: Patent
• Language: English
• Published: 07.05.2002

The present invention relates to a procedure for the preparation of a new catalyst with application in hydrodenitrogenation and hydrodesulfurization of middle and heavy petroleum distillates. The catalyst object of the present invention is basically constituted by active metals and promoters, whose elements belong to groups VIII, VI, IVB of the periodic table, with specific properties for hydrodenitrogenation and hydrodesulfurization of middle and heavy petroleum oil fractions. A procedure to prepare a catalyst for the hydrodenitrogenation, hydrodesulfurization and hydrodemetallization of middle and heavy oil fractions. The catalyst uses a support consisting on an alumina matrix, having this matrix dispersed on its surface or in its mass, or in both, a metal oxide from group IVB of the periodic table. The support is prepared by co-precipitation technique, co-gelification or impregnation of the alumina with a Ti compound, soluble in an organic solvent, followed by drying at 100 to 200° C. and a calcination at 400 to 600° C., on oxidizing atmosphere. Impregnation of the support proceeds using an aqueous solution with spray-impregnation technique, after which, the support is left for aging for a period of 1 to 12 hrs. The impregnated support is then dried at a temperature of 110 to 200° C., for a period of 1 to 8 hrs. Finally, calcination takes place in oxidizing atmosphere at a temperature between 400 and 600° C. for a period of time of 2 to 6 hrs.