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Boosting Hydrodesulfurization Activity of CoMo/Al2O3 Catalyst via Selective Graphitization of Alumina Surface Full article

Journal Microporous and Mesoporous Materials
ISSN: 1387-1811 , E-ISSN: 1873-3093
Output data Year: 2021, Volume: 317, Article number : 111008, Pages count : 9 DOI: 10.1016/j.micromeso.2021.111008
Tags CoMo catalysts; Carbon deposition; Alumina; Mesoporous support; Hydrodesulfurization
Authors Kazakova Mariya A. 1,2 , Vatutina Yulia V. 1,2 , Prosvirin Igor P. 1 , Gerasimov Evgeniy Yu 1,2 , Shuvaev Alexander V. 3 , Klimov Oleg V. 1 , Noskov Alexander S. 1 , Kazakov Maxim O. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Novosibirsk, 630090, Russia
2 Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia
3 Siberian Transport University, D. Kovalchuk 191, Novosibirsk, 630049, Russia

Funding (2)

1 Russian Science Foundation 19-73-00069 (АААА-А19-119091790006-3)
2 Ministry of Science and Higher Education of the Russian Federation 0239-2021-0010

Abstract: The positive effect of alumina surface graphitization by CVD with ethylene on the activity of CoMo catalysts in hydrodesulfurization has been demonstrated. X-ray diffraction, Raman spectroscopy, High-resolution transmission electron microscopy, X-ray photoelectron spectroscopy and nitrogen physisorption showed that alumina surface graphitization does not significantly change the morphology and textural characteristics of the support. However, it has a significant impact on the morphology of supported sulfide component resulting in the formation of particles with a shorter slab length (2.9 vs 3.3 nm) and higher stacking number (2.4 vs 2.1) as compared to the sample based on γ-Al2O3. The results of CoMoS/γ-Al2O3 and CoMoS/C@γ-Al2O3 catalysts testing in hydrotreating reactions demonstrated a similar activity in hydrodenitrogenation of quinoline and 1.7 times higher activity of CoMoS/C@γ-Al2O3 in hydrodesulfurization of dibenzothiophene. Higher hydrodesulfurization activity of CoMoS/C@γ-Al2O3 sample is attributed to improved dispersion of the supported sulfide component and enhanced promotion of MoS2 by cobalt. Thus, the simple CVD approach presented here allows selective modification of the surface of commercially available alumina supports with a layer of graphite-like carbon and can be used to improve the activity of conventional hydrotreating catalysts.
Cite: Kazakova M.A. , Vatutina Y.V. , Prosvirin I.P. , Gerasimov E.Y. , Shuvaev A.V. , Klimov O.V. , Noskov A.S. , Kazakov M.O.
Boosting Hydrodesulfurization Activity of CoMo/Al2O3 Catalyst via Selective Graphitization of Alumina Surface
Microporous and Mesoporous Materials. 2021. V.317. 111008 :1-9. DOI: 10.1016/j.micromeso.2021.111008 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: Dec 26, 2020
Accepted: Feb 14, 2021
Published online: Feb 27, 2021
Published print: Apr 1, 2021
Identifiers:
Web of science: WOS:000634775800001
Scopus: 2-s2.0-85101869357
Elibrary: 46758095
Chemical Abstracts: 2021:582260
Chemical Abstracts (print): 177:148743
OpenAlex: W3134220625
Citing:
DB Citing
Scopus 26
Web of science 23
Elibrary 23
OpenAlex 25
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