Liquid phase component transport limited reactions

Liquid phase component transport limited reactions. An industrially inportant reaction of this type is hydrotreating to remove sulfur, nitrogen and metals from gas oils and residual oils. These feeds are commonly liquid under reactor conditions. 

Gas phase component transport limited reactions. There are several studies in the literature representative of reactions limited by transport of the gas phase component. In these studies, the gas phase component must first dissolve in the liquid to be then transported to a catalytic site by diffusion into the catalyst pores. Alternatively, the gas phase reactant can contact the catalyst particle outer surface directly without first dissolving in the moving liquid stream. Because the direct contact... 

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