Hydrodesulfurization is a catalytic chemical process that involves the treatment of petroleum fractions with hydrogen gas in the presence of a catalyst, typically at elevated temperatures and pressures. The process converts sulfur compounds, including DBTs, into hydrogen sulfide (H2S), which can then be removed. Common catalysts used in HDS include transition metal sulfides such as molybdenum disulfide (MoS2) promoted with cobalt (Co) or nickel (Ni).
