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dc.contributor.advisorDalai, Ajay
dc.creatorAyandiran, Afees Ayodeji
dc.date.accessioned2021-06-03T20:11:22Z
dc.date.available2022-06-03T06:05:07Z
dc.date.created2021-05
dc.date.issued2021-06-03
dc.date.submittedMay 2021
dc.identifier.urihttps://hdl.handle.net/10388/13410
dc.description.abstractProduction of jet fuel range hydrocarbons via processing of oleic acid has proved to be a viable alternative to the conventional ways of producing jet fuel range hydrocarbons. In this study, the collaborative influence of Fe on the Cu/SiO2-Al2O3 catalysts of 5–15 wt. % Cu loadings was established by changing the contents of Fe in the range of 1–5 wt. % on the optimized 13 wt. %Cu catalyst supported on SiO2-Al2O3. The highest yield (59.5%) and selectivity (73.6%) jet fuel range hydrocarbons were obtained from the evaluation of the Fe(3)-Cu(13)/SiO2-Al2O3 catalyst at 300 °C and 2.07 MPa H2 pressure, which can be attributed to its desirable textural properties, mild Bronsted acid sites confirmed pyridine FTIR analysis, high metal dispersion revealed from CO chemisorption analysis and TPR analysis. In the second phase of this research work, the collaborative effects of 1 wt.% Ti, 1 wt.% Zr, and 0.5-2 wt.% Sn on the promising bimetallic catalyst (Fe(3)-Cu(13)/SiO2-Al2O3) were also established through in depth characterization and evaluation to produce jet fuel range hydrocarbons via hydroprocessing of oleic acid. Hydroprocessing of oleic acid over 1 wt. % Sn promoted Fe(3)-Cu(13)/SiO2-Al2O3 catalyst at 320°C, 2.1 MPa H2 pressure and 8 h, resulted in the highest selectivity (76.8 %) and yield (71.7 %) of jet fuel range hydrocarbons. The promising performance of the catalyst is attributed to its high metal dispersion (revealed from its smallest crystallite size of 5.1 nm and its weakest metal-support interaction), desirable textural properties (revealed from its largest surface area of 571 m2 /g and highest pore volume of 0.65 cm3 /g). Maximization of selectivity of jet fuel range hydrocarbons and oleic acid conversion with the best combination of the process parameters involved and evaluation of thermodynamic and kinetic activation parameters is the focus of phase 3 of this research work. Reduced quadratic jet fuel range hydrocarbons selectivity model and reduced cubic oleic acid conversion model of high significance levels and high correlation coefficient were developed. Reaction temperature of 339.5 oC, 6.2 wt.% catalyst concentration, 1.6 MPa H2 pressure and 8.0 h reaction time were the optimum process parameters that can maximize selectivity of jet fuel range hydrocarbons and oleic acid conversion at 82.2% and 98.2 %, respectively. This process was found to be endothermic, irreversible and non-spontaneous with 45.8kJ/mol activation enthalpy of reaction, -0.25kJ/mol entropy of reaction and the reaction’s Gibb’s free energy of 198.8kJ/mol at 340 oC. The minimum energy required for the reaction to take place was evaluated to be 50.7kJ/mol. iv Production of aviation biofuel that will be competitive with the conventional jet fuel derived from crude oil in terms of its cost effectiveness has been the subject of research in recent years. In the phase 4 of this research work, technoeconomic analysis of greenseed canola derived jet fuel range hydrocarbons were carried out using a SuperPro design software. 79200 MT/year of oleic acid (model compound of greenseed canola oil) was hydroprocessed with 1.6 MPa of hydrogen over a 1 wt. % Sn promoted trimetallic catalyst to produce 59345 MT/year jet fuel range hydrocarbons of 99.5 wt. % purity. Economic evaluation of the production process revealed net annual profit of 1.25 million dollars, respectively, with 38.46 % return on investment and 2.6 years payback time. In conclusion, a novel 1 wt. % Sn promoted on Fe(3)-Cu(13)/SiO2-Al2O3 catalyst was established to be effective and profitable for production of jet fuel range hydrocarbons after optimization of catalysts of different supports, loadings of Sn, Fe and Cu, process parameters and economic evaluation.
dc.format.mimetypeapplication/pdf
dc.subjectJet fuel
dc.subjectHydroprocessing
dc.subjectOleic acid
dc.subjectSn-promoted catalyst
dc.subjectmetal–support interaction
dc.subjectOptimization
dc.subjectKinetics
dc.titleNovel Catalysts Development for Production of Jet Fuel Range Hydrocarbons from Vegetable Oils
dc.typeThesis
dc.date.updated2021-06-03T20:11:22Z
thesis.degree.departmentChemical and Biological Engineering
thesis.degree.disciplineChemical Engineering
thesis.degree.grantorUniversity of Saskatchewan
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)
dc.type.materialtext
dc.contributor.committeeMemberHu, Yongfeng
dc.contributor.committeeMemberMeda, Venkatesh
dc.contributor.committeeMemberZhang, Lifeng
dc.contributor.committeeMemberAbdelrasoul, Amira
dc.contributor.committeeMemberYang, Qiaoqin
dc.creator.orcid0000-0001-8594-7321
local.embargo.terms2022-06-03


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