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Wan Nazwanie Wan Abdullah,Wan Azelee Wan Abu Bakar,Rusmidah Ali 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.10
The performance of oxidative desulfurization (ODS) of commercial diesel by alumina supported polymolybdate based catalyst system was studied using tert-butyl hydroperoxide (TBHP) as an oxidizing agent. From catalytic testing, MoO3-Al2O3 calcined at 500 oC was the most potential catalyst which gave the highest sulfur removal under mild condition. The sulfur content in commercial diesel was successfully reduced from 440 ppmw to 105 ppmw followed by solvent extraction. Response surface methodology involving Box-Behnken was employed to evaluate and optimize MoO3/Al2O3 preparation parameters (calcination temperatures, molybdenum loading precursor and catalyst loading), and their optimum values were found to be 510 oC, 0.98 g and 11.18 g/L of calcination temperature, molybdenum loading precursor and catalyst loading, respectively. Based on results, the reaction mechanism for oxidation of sulfur compounds to the corresponding sulfones occur in the presence of MoO3 /Al2O3 catalyst was proposed.
Catalytic pyrolysis of waste oil into hydrocarbon fuel utilizing cerium oxide catalyst
Mohamad Arsyad Abdul Khalid,Nurhayati Abdullah,Mohamad Nasir Mohamad Ibrahim,Rahmad Mohd Taib,Salmiah Jamal Mat Rosid,Nurasmat Mohd Shukri,NoorFatimah Yahaya,Wan Nazwanie Binti Wan Abdullah 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.6
The depletion of fossil fuels has prompted research into alternative fuels made from regeneration of wastematerials. Pyrolysis is a method of converting waste oil into valuable products, such as char, gas, and fuel. This studypresents the catalytic pyrolysis of waste oil for producing fuel utilizing cerium oxide, CeO2/Al2O3 and zinc oxide, ZnO/Al2O3 catalyst. The catalyst and oil were characterized using several characterization techniques to find the physicochemicalproperties of the catalyst and oil. The optimum condition for catalytic pyrolysis was a reaction temperature at500 oC, with the heating rate at 10 oC/min, utilizing CeO2/Al2O3 catalyst calcined at 700 oC. The catalytic pyrolysis successfullyconverted the waste oil into fuel and the oil product obtained was 93.01 wt% with a high calorific value(54.2MJ/kg). The pyrolysis oil is comprised of aliphatic hydrocarbon (C5-C15 hydrocarbon) that is within the hydrocarbonrange for gasoline and diesel. The oil product was also detected to have a low content of oxygen (3.07 wt%) andsulfur (0.60wt%), indicating its potential to serve as a cleaner, fuel reducing the sulfur dioxide, SOX formation. Theresults reveal that pyrolysis reactors have the ability to convert waste oil into hydrocarbon fuel.