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Salmiah Jamal Mat Rosid,Azman Azid,Aisyah Fathiah Ahmad,Nursyamimi Zulkurnain,Susilawati Toemen,Wan Azelee Wan Abu Bakar,Ahmad Zamani Ab Halim,Wan Nur Aini Wan Mokhtar,Sarina Mat Rosid 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.1
Developed countries are increasing their demand for natural gas as it is an industrial requirement for fuel transportation. Most of modern society relies heavily on vehicles. However, the presence of CO₂ gas has led to the categorization of sour natural gas which reduces the quality and price of natural gas. Therefore, the catalytic methanation technique was applied to convert carbon dioxide (CO₂) to methane (CH₄) gas and reduce the emissions of CO₂ within the environment. In this study, samarium oxide supported on alumina doped with ruthenium and manganese was synthesized via wet impregnation. X-ray diffraction (XRD) analysis revealed samarium oxide, Sm₂O₃ and manganese oxide, MnO₂ as an active species. The reduction temperature for active species was at a low reaction temperature, 268.2℃ with medium basicity site as in Temperature Programme Reduction (TPR) and Temperature Programme Desorption (TPD) analyses. Field Emission Scanning Electron Microscopy (FESEM) analysis showed an agglomeration of particle size. The characterised potential catalyst of Ru/Mn/Sm (5:35:60)/Al₂O₃ (RMS 5:35:60) calcined at 1,000℃ revealed 100% conversion of CO₂ with 68.87% CH₄ formation at the reaction temperature of 400℃. These results were verified by artificial neural network (ANN) with validation R² of 0.99 indicating all modelling data are acceptable.
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.