Abstract
The effect of the composition of a dry mix containing molybdenum oxide, carbon, and reducing metal (Zn or Al) on the formation of molybdenum carbides during the mechanical activation (MA) of the mixture is studied. The phase composition of the mechanically activated samples is studied via X-ray phase analysis (XPA). The optimum formulation of the mixture and the MA modes ensuring a yield of highly dispersed carbide-containing catalyst with Mo2C + Al2O3 composition are determined. It is shown that the composition of the medium (air or argon) has no appreciable effect on the phase composition of the target product (molybdenum carbide). Catalytic testing of carbide-containing catalyst in the reaction of hydrodesulfurization of dibenzothiophene (DBT) is conducted, and it is established that this catalyst exhibits high activity and selectivity: at 320°C, the conversion of DBT is 92.8% and the content of cycloalkanes is 88.3%. The obtained results can be used to create an industrial zero-waste technological process for the production of molybdenum carbide.
Published Version
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