The Selective Removal off Nitrogenous-Type Compounds from Fuels by Using Zeolites

Abstract

Several zeolites were tested for the selective removal of nitrogenous compounds from an organic solution. A model compound study showed that the extent of sorption from a complex mixture is a function of the nature of the nitrogenous compounds. A correlation between the extent of sorption and the size of a compound suggests that diffusion is the controlling parameter. A capacity of 10 wt% was obtained for the model compound study. The zeolites were also tested for the removal of nitrogenous compounds from a coker naphtha and from a hydroprocessed naphtha. The low capacities relative to the model compound study of ?1 wt% and ?3 wt% obtained for the coker and the hydroprocessed naphthas, respectively, suggest the sorption of nonnitrogenous compounds.