Oxidative desulfurization of 4,6-dimethyl dibenzothiophene and light cycle oil over supported molybdenum oxide catalysts

Textural properties of nickel, palladium and titanium oxides supported on MCM-41 materials and their application on oxidative desulfurization of dibenzothiophene

“…Data indicate that there was no significant blockage of the pores by oxide particles of nickel, palladium and titanium incorporated to the MCM-41 mesopore structure. However, there was a reduction of the mesopores volumes which can be caused by oxide charges, resulting in the hexagonal structure contraction 5,9 , compatible with the XRD results. Figure 4 shows TEM images of the synthesized samples MCM-41, NiO/MCM-41, PdO/MCM-41 and TiO 2 /MCM-41, respectively.…”

“…The metallic oxides, as for nickel, palladium and titanium can easily change their valence state, promote the redox cycle and therefore, present good desulfurization outcomes. The active phases can change the structural and morphologic properties of the final catalysts, capable of enhancing their stability and activity for this process [7][8][9][10] . One of the main applications of the silica mesoporous matrix containing metals is the desulfurization of automotives fuels 9 .…”

“…The active phases can change the structural and morphologic properties of the final catalysts, capable of enhancing their stability and activity for this process [7][8][9][10] . One of the main applications of the silica mesoporous matrix containing metals is the desulfurization of automotives fuels 9 . With environmental regulations even more rigorous, refineries are facing the inevitable reality that they will need to produce fuels with minimal amounts of sulfur 7 .…”

Oxidative desulfurization of diesel with TBHP/isobutyl aldehyde/air oxidation system

“…Usually, hydrogen peroxide and TBHP are used as the oxidizing reagents because of its high oxidisability in the ODS process. Various studies of oxidation system on this process have been reported, such as H 2 O 2 / formic acid [13], H 2 O 2 /inorganic solid acids [14], Mo/Al 2 O 3 and H 2 O 2 [8], TBHP/Bi-Mo/Siral [15], CpMo(CO) 3 Cl/H 2 O 2 orTBHP [16], (Me 3 TACN)Mn/TBHP [17], V-Mo/TBHP [18], Mo/Al 2 O 3 /TBHP [19]. Recently, the molecular oxygen has been used as the oxidizing reagent in the ODS process because it is cheap, nonpolluting, not strongly corrosive and commercially available.…”

Investigation of Influential Parameters in Deep Oxidative Desulfurization of Dibenzothiophene with Hydrogen Peroxide and Formic Acid

“…At the second stage, these highly polarized products are removed from the fuels by adsorption or liquid-liquid extraction [4,5]. Various oxidation systems for ODS process with different oxidants and catalysts have been employed, such as H 2 O 2 /acetic acid [6][7][8], H 2 O 2 /formic acid [4,9,10], H 2 O 2 /heterogeneous catalysts [11][12][13], H 2 O 2 /ionic liquid [14,15] oxygen/aldehyde [16], ozone/heterogeneous catalysts [17], and tert-butyl hydroperoxide/heterogeneous catalysts [18][19][20]. Hydrogen peroxide is the most common oxidant for ODS proces, because it is cheap, environmentally friendly, and commercially available.…”