EFFECT OF Si/Al RATIO IN DEEP HYDRODESULFURIZATION OF Pt/Al-MCM41 CATALYTS

  • J.A. Colín-Luna UAM-A
  • A.K. Medina-Mendoza UAM-A
  • J.A. De los Reyes UAM-I
  • J. Escobar IMP
  • J. A. Montoya de la Fuente
  • R. Suarez P IER-UNAM
Keywords: hydrodesulfurization, DBT, MCM-41, grafting method, Pt/MCM-41

Abstract

In this work Pt catalysts (1 wt. %) were prepared by incipient wetness impregnation employing a series of mesoporous Almodified MCM-41 at Al2O3/SiO2 mass ratios equal to 10, 25 y 40 by means of chemical grafting method. Such materials were characterized and tested in the HDS of dibenzothiophene (DBT) and 4,6 dimethyldibenzothiophene (4,6-DMDBT) as model molecules in a batch reactor to similar industrial conditions (320C and 5.5 MPa). These Pt catalysts exhibited higher activity than Pt/Al2O3 used as a reference. The order of activities was: Pt/Al(40)MCM41 > Pt/Al(10)MCM41 ≈ Pt/Al(25)MCM41 > Pt/Al2O3 >> Pt/MCM41and selectivity was mainly to desulfurization products. The most active catalyst was tested in the HDS of 4,6-DMDBT and the results showed an important effect for Al in the HDS of highly refractory molecules.

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Published
2020-03-18
How to Cite
Colín-Luna, J., Medina-Mendoza, A., De los Reyes, J., Escobar, J., Montoya de la Fuente, J. A., & Suarez P, R. (2020). EFFECT OF Si/Al RATIO IN DEEP HYDRODESULFURIZATION OF Pt/Al-MCM41 CATALYTS. Revista Mexicana De Ingeniería Química, 12(2), 271-282. Retrieved from http://www.rmiq.org/ojs311/index.php/rmiq/article/view/1466
Section
Catalysis, kinetics and reactors

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