The CoOMoO3Al2O3 catalyst. IV. Pulse and continuous flow experiments and catalyst promotion by cobalt, nickel, zinc, and manganese
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Cited by (70)
Nickel sulfide crystals in Ni-Mo and Ni-W catalysts: Eye-catching inactive feature or an active phase in its own right?
2017, Catalysis TodayCitation Excerpt :So, overall, the NiSx crystals could account for 11% and 48% of the active sites in NiMo/Al2O3 commercial unit and NiW bulk, respectively. Typically, in studies into the effect of promotor to Mo/W atom ratio on activity, a maximum is observed around Co/Ni to Co/Ni + Mo/W atomic ratio of 0.3–0.5 [57–60]. This maximum refers to the bulk concentrations and not to the promotor to Mo/W ratio at the edges of the MoS2/WS2 structures.
Economic and technical impacts of replacing Co and Ni promotion in hydrotreating catalysts
2013, Applied Catalysis A: GeneralCitation Excerpt :Further theories propose that the role of Co and Ni is simply to increase the structural disorder of the MoS2 phase [144,145]. Co and Ni free combinations tested in hydrotreating reactions include unsupported sulfides [89,90,95,113,146,147,153,156,165,166], several Chevrel compounds [152,162–164,170] as well as compositions supported on Al2O3 [44,107,114,134,135,148,151,155,157–161,167–169], SiO2 [44,89], carbon [154] and ZrO2 [72]. As discussed above, while noble metals containing compositions have an improved activity, this does not compensate for the huge increase in catalyst cost price.
The influence of metal loading and activation on mesoporous materials supported nickel phosphide hydrotreating catalysts
2009, Applied Catalysis A: GeneralInfluence of double promotion on HDS catalysts prepared by urea-matrix combustion synthesis
2006, Applied Catalysis A: GeneralImpact of the urea-matrix combustion method on the HDS performance of Ni-MoS<inf>2</inf>/γ-Al<inf>2</inf>O<inf>3</inf> catalysts
2005, Journal of Molecular Catalysis A: Chemical
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Visiting Professor; Permanent address: Chemistry Department, Carleton University, Ottawa Canada.