What role do cobalt, molybdenum, and nickel play in hydrogenation catalysts?
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Molybdenum-nickel catalysts are used for pre-hydrogenation in gasoline hydrogenation units, while cobalt catalysts are employed in the hydrodesulfurization unit – what role do they play in this process?
The function of the hydrodesulfurization catalyst is to cause hydrogenolysis of organic sulfides in the hydrocarbon feedstock, converting them into hydrogen sulfide, which is easier to remove, thereby further preventing downstream catalysts from being poisoned.
The first step is that the main function of the hydrogenation reaction is to convert organic sulfur in the feed gas into inorganic sulfur, namely hydrogen sulfide. The second step, the desulfurization reaction, is a process in which the hydrogen sulfide produced by hydrogenation reacts with zinc oxide to remove sulfur.