Industrial alumina as a support of MoP: catalytic activity in the hydrodesulfurization of dibenzothiophene

Alumina support with a high surface area was used to prepare alumina-supported MoP catalysts, varying the Mo and P loadings from 4% wt. to 53%wt. Mo and P were loaded with an atomic ratio of Mo:P=1. The presence of different phosphate species was detected on all calalysts by NMR and electron diffraction techniques. The A1PO4 phase was identified for highly loaded MoP catalysts (> 26 wt% of theoretical MoP). The catalytic materials were tested in hydrodesulfurization (HDS) of Dibenzothiophene (DBT) under high temperature (5935 K )and pressure (5.5 MPa ) conditions and the highest activity for HDS of DBT was obtained with the catalyst containing Mo 9.9 wt% (13% wt of theoretical MoP) keeping an atomic ratio P/Mo=l. A structural model is proposed considering the Mo and P loading. The catalyst with the best activity showed high surface area (>200 m²/g).

Bibliographic Details

Main Authors:	Montesinos-Castellanos,A., Lima,E., Vázquez-Zavala,A., de los Reyes,J. A., Vera,M. A.
Format:	Digital revista
Language:	English
Published:	Universidad Autónoma Metropolitana, División de Ciencias Básicas e Ingeniería 2012
Online Access:	http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1665-27382012000100009
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