Effect of the Microstructure of Composite CoMoS/Carbon Catalysts on Hydrotreatment Performances

Several CoMoS/carbons were successfully synthetized using hydrothermal-type approaches and a subsequent surface reaction for the promotion step with Co. The effect of the microstructure of carbons used as a matrix for CoMoS-based catalysts was studied in the case of hydrotreating reactions. It was f...

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Bibliographic Details
Published inCatalysts Vol. 13; no. 5; p. 862
Main Authors Ghosh, Sourav, Courthéoux, Laurence, Brunet, Sylvette, Lacroix-Desmazes, Patrick, Pradel, Annie, Girard, Etienne, Uzio, Denis
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.05.2023
MDPI
Subjects
Adsorption
Carbon
Catalysis
catalyst
Catalysts
Catalytic cracking
Chemical reactions
Chemical Sciences
CoMoS
Crystallites
hydrodesulfurization
Hydrogen sulfide
Hydrogenation
Microstructure
Morphology
selectivity
Surface reactions
Tubes
France
Selectivity
Carbon
Hydrogenation
CoMoS
Catalyst
Hydrodesulfurization
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Summary:Several CoMoS/carbons were successfully synthetized using hydrothermal-type approaches and a subsequent surface reaction for the promotion step with Co. The effect of the microstructure of carbons used as a matrix for CoMoS-based catalysts was studied in the case of hydrotreating reactions. It was found that 1D (nanofibers/tubes) or 2D (nanosheets) carbon nanostructures may influence the characteristics of the CoMoS crystallites (dispersion, promotion rate and orientation of the slabs) and as a consequence the catalytic properties. In particular, the HDS mechanism of the substituted 4-MethylDiBenzoThiophene (4-MDBT) was found to be microstructure-dependent, as well as the selectivity of 3-MethylThiophene (3-MT) HDS/2,3-DiMethylBut-2-eNe (2,3-DM2BN) hydrogenation.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal13050862