Catalytic Oxidative Desulfurization Of Fuel Oil With Molecular Oxygen(Air)

Sulfur dioxide as a pollutant resulting from fuel combustion contributes a lot to the environmental pollution.Benzothiophene(BT),dibenzothiophene(DBT)and other sulfur compounds presented in fuel oils possess harmful potentials for human health,as well as earth environment due to their emission of SO2 upon combustion.In this study,different catalysts such as cobalt acetate(CoO4C4H6.4H2O),manganese acetate(MnO4C4H6.4H2O),ferric chloride(FeCl3.6H2O),and vanadium pentaoxide(V2O5)have been used for catalytic oxidative of DBT in model oil.Similarly,MOFs and other soluble compounds such as acetic acid(CH3COOH),Hydrogen Bromide(HBr),Ferrous acetylacetonate(C10H16FeO4)and sodium bicarbonate NaHCO3,cobalt nitrate Co(NO3)2,manganese nitrate Mn(NO3)2,and copper nitrate Cu(NO3)2 have been investigated under ambient condition in order to get a promising result for removing DBT sulfur from oils.Different MOFs were synthesized,and their desulfurization performance for DBT model oil was examined under different reaction temperature,pressure,and time,respectively.Adsorption desulfurization ability of these MOFs was also studied for DBT model oil.Different MOFs possessed different durability and affinities for the adsorption of DBT,in the presence of aromatic components and moisture.The oxidative and adsorption capacity of MOFs with respect to large-ring aromatic sulfur compounds were studied at several temperatures.HPLC SCL-lOAvp SHIMADZU and sulfur analyzer KY-3000SN were used to analyze the sulfur content in model oil and SHIMADZU GC-2010 analyzer used to determine the oxidized products for the oxidation of pure n-octane.Conclusively,the result from this study reveals that the compounds prepared are cheap in comparison with other desulfurizing adsorbents.Moreover,the oxidation desulfurization process using molecular oxygen as oxidant may be applicable with environmental friendliness provided appropriate catalysts were observed.