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Application of palladium supported on functionalized MWNTs for oxidative desulfurization of naphtha
Neda Mohammadi Meman,Bahman ZareNezhad,Alimorad Rashidi,Zeinab Hajjar,Elaheh Esmaeili 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.22 No.-
In this research, Pd supported multi wall carbon nanotube(MWNT) nano catalyst prepared in previouswork used for investigation the efficiency of an oxidative desulfurization (ODS) process in sulfurreduction from naphtha. Palladium (Pd) supported on functionalized multi-walled carbon nanotubes(FMWNTs) have been found to be effective in catalyzing oxidation of the sulfur impurities in naphtha tocorresponding sulfones. a catalyst of 0.1%wt Pd on FMWNT as a support synthesized by impregnationmethod and was characterized by TEM, X-ray Diffraction (XRD), TPR and BET analysis. oxidativedesulfurization reaction was done at 25 8C in atmospheric pressure under reaction condition of VH2O2 =2 mL and Fuel/solvent molar ratio = 2.We also applied our catalyst in oxidative desulfurization reactionof naphtha (with sulfur contents 870 ppm), and more than 90% of sulfur was removed from naphthaunder mild reaction conditions.
Application of palladium supported on functionalized MWNTs for oxidative desulfurization of naphtha
Neda Mohammadi Meman,Bahman ZareNezhad,Alimorad Rashidi,Zeinab Hajjar,Elaheh Esmaeili 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-
In this research, Pd supported multi wall carbon nanotube(MWNT) nano catalyst prepared in previous work used for investigation the efficiency of an oxidative desulfurization (ODS) process in sulfur reduction from naphtha. Palladium (Pd) supported on functionalized multi-walled carbon nanotubes (FMWNTs) have been found to be effective in catalyzing oxidation of the sulfur impurities in naphtha to corresponding sulfones. a catalyst of 0.1%wt Pd on FMWNT as a support synthesized by impregnation method and was characterized by TEM, X-ray Diffraction (XRD), TPR and BET analysis. oxidative desulfurization reaction was done at 25 °C in atmospheric pressure under reaction condition of VH2O2 = 2 mL and Fuel/solvent molar ratio = 2. We also applied our catalyst in oxidative desulfurization reaction of naphtha (with sulfur contents 870 ppm), and more than 90% of sulfur was removed from naphtha under mild reaction conditions.
Neda Mohammadi Meman,Bahman ZareNezhad,Mahnaz Pourkhalil,Alimorad Rashidi 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
In order to meet the approved sulfur emission standards, it is necessary to develop alternative methodsfor deep desulfurization of fuels and sour petroleum fractions. In this work a functionalized multi-walledCNT supported MnOx nanocatalyst (MnOx/FMWNT) has been synthesized and its performance toenhance the efficiency of oxidative desulfurization (ODS) process for deep desulfurization of sournaphtha has been investigated. The synthesized MnOx/FMWNT heterogeneous nanocatalyst showsexcellent performance regarding the oxidation of sulfur impurities in naphtha petroleum cut tocorresponding sulfones. The synthesized catalyst is characterized by Fourier transform infraredspectroscopy (FTIR), transmission electron microscope (TEM), X-ray diffraction (XRD) and H2-temperature programmed reduction (H2-TPR) methods. The performance test of the synthesizednanocatalyst at 25 ℃ and atmospheric pressure indicates a sulfur removal efficiency of 99.85% within30 min. The proposed ODS technique allows a substantial cost reduction as compared to existing energyintensive desulfurization processes and can be used for establishing the new large scale catalytic reactorsfor deep desulfurization of petroleum fractions.