Bimetallic CoMo Nanoparticles Supported over Carbon-Zeolite Composites as Dibenzothiophene Hydrodesulfurization Catalyst

Zahra Mohammadian (Department of Physical and Computational Chemistry, Faculty of Chemistry Science and Petroleum, Shahid Beheshti University, Tehran)
Mohammad Hasan Peyrovi (Department of Physical and Computational Chemistry, Faculty of Chemistry Science and Petroleum, Shahid Beheshti University, Tehran)
Nastaran Parsafard (Department of Applied Chemistry, Kosar University of Bojnord, North Khorasan)

Bulletin of Chemical Reaction Engineering & Catalysis
2021: BCREC Volume 16 Issue 4 Year 2021 (December 2021)

Cobalt molybdenum catalysts supported on novel activated carbon-HZSM-5 composites with different mass ratios were prepared by wet-impregnation method and pre-sulfided by CS2. Characterization of these catalysts was done using X-ray powder diffraction, Fourier transform infrared spectroscopy, N2 adsorption-desorption, and scanning electron microscope analytics. Their activity for the hydrodesulfurization reaction of dibenzothiophene was investigated at atmospheric pressure in the temperature range of 250–400 °C using the fixed-bed reactor with 0.5 g of each powder and pre-sulfided with CS2. The highest conversion of dibenzothiophene at the temperature range of 300–400 °C was obtained for the CoMo/activated carbon-HZSM-5(1:1) catalyst. The best selectivity for cyclohexylbenzene, which is the dominant product according to gas chromatography results, was obtained at all temperatures using CoMo/activated carbon-HZSM-5(3:1) catalyst. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).