Solvent effects on dibenzothiophene hydrodesulfurization: Differences between reactions in liquid or gas phase

► Solvent effects on DBT HDS were analyzed. ► Activity classification of catalysts depends on reaction conditions and solvent choice. ► Rate and selectivity are affected by solvent evaporation. ► DBT and solvent compete for active sites. ► Intrinsic catalyst activity is not modified by evaporation or solvent.