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 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.

Automated summary

Several CoMoS/carbons were synthesized using hydrothermal-type approaches followed by a surface reaction with Co for the promotion step. The impact of carbon nanostructures (1D nanofibers/tubes or 2D nanosheets) as a matrix on the characteristics and catalytic properties of CoMoS crystallites was investigated in hydrotreating reactions. The microstructure was found to affect the HDS mechanism of 4-MethylDiBenzoThiophene (4-MDBT) and the selectivity of 3-MethylThiophene (3-MT) HDS/2,3-DiMethylBut-2-eNe (2,3-DM2BN) hydrogenation.