Influence of nitrogen on deep hydrodesulfurization of 4,6-Dimethyldibenzothiophene

摘要

The U.S.Environmental Protection Agency requires that diesel in 2006 have sulfur content no more than 15 wppm [1]. Sulfur removal to such depths will require knowledge of the influence of non-sulfur diesel fuel component on deep hydrodesulfurization (HDS). Nitrogen, in particular, has receive significant attention because the reactivity of nitrogen-containing heterocompounds is much lower than those of polyaromatic sulfur compounds (PASCs) [2]. Therefore, at very low sulfur level, refractory nitrogen compounds could significantly influence the deep HDS of PASCs.