OBTENTION OF LOW LOADING CATALYSTS FOR DEEP HYDROCARBONS HYDRODESULFURIZATION BASED OF COMOS, WITH NIMOS HYDRODENITROGENANT ADDITIVE, SUPPORTED ON THREE-DIMENSIONAL NANOSTRUCTURED MESOPOROUS MATERIALS.

摘要

The present invention shows a synthesis method for a highly dispersed supported catalyst over a KIT-6 type nanostructured mesoporous oxide with elements from Groups IIIA or IVA, or IVB. The method includes the synthesis of the support, the incorporation of CoMo and NiMo active phases through impregnation to pore volume, assisted by ultrasound, calcination at controlled conditions in order to obtain a phase of hydrated trioxide molybdenum or molybdic acid, which facilitates the subsequent sulfihydration and the mechanical mixing of a CoMoS/support with a hydrodenitrogenant NiMoS/support additive. The obtained catalysts exhibit a catalytic activity mainly in reactions of hydrotreatment, hydrodesulfurization, and hydrodenitrogenation. The invention is advantageous in that it is a low-cost composition due to the content of transition metals, also being a way for activating the precursor salts for generating high dispersion, and a simple method for obtaining deep hydrodesulfurization catal ysts resistant to the presence of nitrogenized compounds through the mechanical mixture of type III CoMos and NiMos phases.