?-olefin selectivity of Fe-Cu-K catalysts in Fischer-Tropsch synthesis: Effects of catalyst composition and process conditions

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dc.contributor.authorOzkara-Aydinoglu, Seyma
dc.contributor.authorAtac, Ozlem
dc.contributor.authorGul, Omer F.
dc.contributor.authorKinayyigit, Solen
dc.contributor.authorSal, Sinan
dc.contributor.authorBaranak, Murat
dc.contributor.authorBoz, Ismail
dc.date.accessioned2024-03-13T10:30:57Z
dc.date.available2024-03-13T10:30:57Z
dc.date.issued2012
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractFischer-Tropsch (FT) synthesis has been studied over a series of precipitated Fe catalysts promoted to investigate the effect of K and Cu promoters on the carbon number distribution of FT product. The main intention is to maximize the alpha-olefin selectivity by controlling the secondary reactions of alpha-olefin as a function of potassium and copper loadings. The results showed that impregnation of different loadings of Cu and K promoters to precipitated iron-based catalyst was found to have significant influences on the crystallographic structure, morphological and physical properties of iron-based catalysts, as well as catalytic activity, stability and selectivity performances during FT synthesis. 100Fe7Cu3K sample exhibited the highest catalytic activity and stability in TOS tests. The catalyst is capable of working under a variety of temperatures and space velocities at a same activity level with no significant activity loss. Proper control of Cu and K contents is essential to obtain maximum C-5+ yield since the changes in the relative loadings of both Cu and K promoters affect hydrocarbon product distribution. 100Fe7Cu3K sample has high secondary alpha-olefin hydrogenation activity as olefin/paraffin ratio decreases with increasing carbon number while C-19+ selectivity is relatively low compared to other samples. The effects of space velocity and temperature on alpha-olefin selectivity are strongly dependent on the amounts of Cu and K promoters and chain length. The maximum alpha-olefin/n-paraffin ratio has been obtained over 100Fe3Cu1K sample at 543 K with a space velocity of 3 NL/h/g-cat. (C) 2011 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [1007-108G043]en_US
dc.description.sponsorshipThis work was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK) through the project TUBITAK 1007-108G043 Liquid Fuel Production from Coal and Biomass Blends.en_US
dc.identifier.doi10.1016/j.cej.2011.11.094
dc.identifier.endpage589en_US
dc.identifier.issn1385-8947
dc.identifier.issn1873-3212
dc.identifier.scopus2-s2.0-84856331938en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage581en_US
dc.identifier.urihttps://doi.org/10.1016/j.cej.2011.11.094
dc.identifier.urihttps://hdl.handle.net/20.500.12662/3624
dc.identifier.volume181en_US
dc.identifier.wosWOS:000301087000065en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofChemical Engineering Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFischer-Tropsch synthesisen_US
dc.subjectIron catalysten_US
dc.subjectalpha-olefin selectivityen_US
dc.subjectCu promoteren_US
dc.subjectK promoteren_US
dc.title?-olefin selectivity of Fe-Cu-K catalysts in Fischer-Tropsch synthesis: Effects of catalyst composition and process conditionsen_US
dc.typeArticleen_US

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