Ultradeep Hydrodesulfurization of Diesel: Mechanisms, Catalyst Design Strategies, and Challenges

• DOI: 10.1021/acs.iecr.0c04049
• Publication Date: 2020-11-27T09:47:53Z
• Authors: Xiaoyi Weng; Liyuan Cao; Guohao Zhang; Feng Chen; Liang Zhao; Yuhao Zhang; Jinsen Gao; Chunming Xu
• Keywords: Ultra-low-sulfur diesel; Space velocity; Dibenzothiophene

With the increasingly strict diesel standards in countries of world, deep processing oil to ultralow sulfur levels is receiving more and attention. This paper mainly reviews reaction mechanism, catalysts, process conditions hydrodesulfurization, it provides new research directions for producing (ULSD). In terms sterically hindered sulfides, nitrides, aromatic compounds, hydrogen sulfide affect direct desulfurization hydrogenate pathways hydrodesulfurization varying degrees. order eliminate these effects, properties high-dispersion active metals, large pore size, high specific surface area, content medium-weak acid, a certain amount Bronsted acid support are beneficial further improve activity catalyst, produce ULSD that meets market demand. article also influences (for instance, temperature, pressure, liquid hourly space velocity, consumption) on ultradeep reaction, finds those moderately temperatures partial pressures, as well low be beneficial. short, development catalysts current hotspot field diesel, still needed.