Hydroprocessing of Phenanthrene Over Sulfided Fe–W Supported on Modified SBA-15

Detailed understanding on thermodynamic and kinetic features of phenanthrene hydroprocessing on Ni‐Mo/HY catalyst

“…Moreover, due to the low cost and abundant resources, transition metal catalysts are suitable for large‐scale application in industry. However, the activity and selectivity of transition metal catalysts are lower than those of noble metal catalysts 17–20 . To enhancing the activity and selectivity of transition metal catalysts, many studies have been devoted to observe the behaviors of transition metal catalysts in the hydrogenation of polyaromatic hydrocarbons 17–20 .…”

“…Sánchez et al found that, on a MoS 2 ‐amorphous silica‐alumina catalyst, at a ratio of Brønsted acid site number (ηH + ) to MoS 2 edge site number (ηMo) (ηH + /ηMo) of 0.39, phenanthrene hydrogenation was preferred, whereas at a ηH + /ηMo ratio of 30.9, acid‐catalyzed reactions, and coke formation were dominated 18 . Restrepo‐Garcia et al reported that the selective hydrogenation of the central ring of phenanthrene was enhanced on the catalyst fabricated by loading sulfurized Fe–W on Al‐modified SBA‐15, and the catalyst with an Al/Si molar ratio of 0.04 had the highest selectivity to produce 9,10‐dihydrophenanthrene 19 . Schachtl et al revealed that Ni‐Mo/γ‐Al 2 O 3 promoted phenanthrene hydrogenation via a path: phenanthrene → 1,2,3,4‐tetrahydrophenanthrene → 1,2,3,4,5,6,7,8‐octahydrophenanthrene 20 .…”

“…Transition metal catalysts exhibit excellent ability in resisting poisons and superior stability in the hydrogenation of polyaromatic hydrocarbons, especially at the high temperatures and pressures widely used for the hydrotreating process of gasoline and diesel in industry. [13][14][15][16][17][18][19][20] Moreover, due to the low cost and abundant resources, transition metal catalysts are suitable for large-scale application in industry. However, the activity and selectivity of transition metal catalysts are lower than those of noble metal catalysts.…”

“…However, the activity and selectivity of transition metal catalysts are lower than those of noble metal catalysts. [17][18][19][20] To enhancing the activity and selectivity of transition metal catalysts, many studies have been devoted to observe the behaviors of transition metal catalysts in the hydrogenation of polyaromatic hydrocarbons. [17][18][19][20] Sánchez et al found that, on a MoS 2 -amorphous silica-alumina catalyst, at a ratio of Brønsted acid site number (ηH + ) to MoS 2 edge site number (ηMo) (ηH + /ηMo) of 0.39, phenanthrene hydrogenation was preferred, whereas at a ηH + /ηMo ratio of 30.9, acid-catalyzed reactions, and coke formation were dominated.…”

“…reported that the selective hydrogenation of the central ring of phenanthrene was enhanced on the catalyst fabricated by loading sulfurized Fe-W on Al-modified SBA-15, and the catalyst with an Al/Si molar ratio of 0.04 had the highest selectivity to produce 9,10-dihydrophenanthrene. 19 Schachtl et al revealed that Ni-Mo/ γ-Al 2 O 3 promoted phenanthrene hydrogenation via a path: phenanthrene ! 1,2,3,4-tetrahydrophenanthrene !…”