Upgrading HDS activity of MoS2 catalysts by chelating thioglycolic acid to MoOx supported on alumina

Highly active P-doped sulfided NiMo/alumina HDS catalysts from Mo-blue by using saccharose as reducing agents precursor

“…HDS activity of various materials was also compared on per active sites basis by affecting intrinsic activity (on per Mo mass basis) taking into account corresponding Mo 4+ fraction and dispersion (as determined by XPS analysis and from Eq. ( 3), respectively) over different prepared catalysts [26].…”

“…In this line the visible region signal around 400 nm previously identified in SA-containing alumina-supported NiMo formulations [9] could be rather attributed to ligand to metal charge transfer (LMCT) complexes saccharide-molybdenum. Indeed, absorptions due to LMCT complexes of thioglycolic acid-molybdenum have been identified in that region [26,51].…”

One pot synthesis of NiMo–Al2O3 catalysts by solvent-free solid-state method for hydrodesulfurization

“…[6][7][8] In addition, the addition of different organic compounds such as ethylene diamine tetraacetic acid (EDTA), citric acid, thioglycolic acid or polyethylene glycol also has crucial inuence. [9][10][11][12] Many approaches have been employed to improve metal dispersion of the catalysts for high HDS activity. The commonly used HDS catalyst preparation methods include simultaneous or sequential impregnation, hydrothermal deposition and solgel synthesis.…”

Effect of 2,6-Bis-(1-hydroxy-1,1-diphenyl-methyl) Pyridine as Organic Additive in Sulfide NiMoP/γ-Al2O3 Catalyst for Hydrodesulfurization of Straight-Run Gas Oil

“…The NiMoP (0.0) spectrum exhibiting bands at 176, 255, 376, 638, 714, 853, 975, and 993 cm −1 . The bands at 993, 975, 376, 225, 376 and 176 cm −1 are assigned to Mo 7 O 24 6− [ 34 ], while the intense 853 cm −1 signal is ascribed to large MoO 3 aggregates [ 35 ]. The peaks at 638 and 714 cm −1 are associated with the γ-Al 2 O 3 [ 36 ].…”