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dc.contributor.authorVenter, Roelf
dc.contributor.authorSchabort, Corneels
dc.contributor.authorMarx, Sanette
dc.date.accessioned2020-09-01T06:57:26Z
dc.date.available2020-09-01T06:57:26Z
dc.date.issued2015
dc.identifier.citationVenter, R. et al. 2015. The hydrotreatment of an unsaturated fatty acid vegetable oil to hydrocarbons over Ni/SiO2-Al2O3. Proceedings 23rd European Biomass Conference and Exhibition, 1-4 June, Vienna, Austria:970-973. [https://doi.org/10.5071/23rdEUBCE2015-3CO.3.2]en_US
dc.identifier.issn2282-5819
dc.identifier.urihttp://hdl.handle.net/10394/35665
dc.identifier.urihttp://www.etaflorence.it/proceedings/?detail=11314
dc.identifier.urihttps://doi.org/10.5071/23rdEUBCE2015-3CO.3.2
dc.description.abstractIn this study, sunflower oil was hydrotreated in the presence of a nickel catalyst with the objective to evaluate the effect of reaction parameters on the characteristics of the reaction product. The effect of reaction temperature, reaction time and initial hydrogen pressure on the conversion of the triglyceride feedstock, the naphtha, kerosene and diesel yield and the liquid product yield was investigated. The reaction product during hydroprocessing is influenced by the type of catalyst used, the reaction conditions as well as the nature of the feedstock. Experiments were conducted using a cylindrical bench scale batch reactor with an inside volume of 350 cm3. Reactions were carried out at temperatures of 390°C to 420°C and initial hydrogen pressures of 5 MPa – 11MPa. The effect of using a catalyst versus no catalyst during hydroprocessing was also compared. The gas product was analysed using gas chromatography with FID and TCD detectors while the liquid product was analysed using GC-MS. It was found that temperature and reaction time has a significant effect on the composition of the liquid product. At a temperature of 390°C with a reaction time of 30 minutes, the diesel yield was found to be 68% to be reduced to 29.6% at a reaction temperature of 420°C with a reaction time of 60 minutes. At more harsh conditions the concentration of lower boiling compounds were found to increase due to the effect of side reactions such as cracking, aromatization and cyclization. It was also found that liquid yield decreased with an increase in reaction temperature due to gas formation. Ni/SiO2-Al2O3 was found to be a promising catalyst for the hydrotreatment of triglyceride-based feedstock due to its relatively low cost and no need for sulfidation. A disadvantage of this catalyst is the formation of methane during the reaction which could have a negative effect on optimal hydrogen consumptionen_US
dc.language.isoenen_US
dc.publisherETA-Florence Renewable Energiesen_US
dc.subjectHydrotreatmenten_US
dc.subjectNickel catalysten_US
dc.subjectRenewable dieselen_US
dc.subjectDeoxygenationen_US
dc.titleThe hydrotreatment of an unsaturated fatty acid vegetable oil to hydrocarbons over Ni/SiO2-Al2O3en_US
dc.typePresentationen_US
dc.contributor.researchID10216847 - Marx, Sanette
dc.contributor.researchID10303685 - Venter, Roelof Jacobus
dc.contributor.researchID12380687 - Schabort, Cornelis Johannes


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