Surface properties hydroprocessing catalysts

The appropriate selection of hydroprocessing catalysts depends on a careful inspection of the chemical properties of the feedstock and the expected products. For conventional distillate HDT (naphtha, kerosene, and gas oil), the specific surface area and the composition of the active phase are the most relevant features. CoMo-based catalysts are the traditional HDS catalysts used in the industry. NiMo catalysts are better for saturation reactions and HDN due to their higher hydrogenation power. Therefore, Ni-promoted catalysts are preferred over CoMo catalysts when the chemistry of the process proceeds through the hydrogenation route (i.e., gas oil feeds containing aromatic S- and N-compounds). NiW catalysts exhibit remarkable hydrogenation properties, but they are rarely used in... 

---