Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/1879
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dc.contributor.authorBayraktar, Oğuz-
dc.contributor.authorKugler, Edwin L.-
dc.date.accessioned2016-07-11T12:55:01Z-
dc.date.available2016-07-11T12:55:01Z-
dc.date.issued2004-03-
dc.identifier.citationBayraktar, O., and Kugler, E. L. (2004). Temperature-programmed reduction of metal-contaminated fluid catalytic cracking (FCC) catalysts. Applied Catalysis A: General, 260(1), 125-132. doi:10.1016/j.apcata.2003.10.013en_US
dc.identifier.issn0926-860X-
dc.identifier.urihttp://doi.org/10.1016/j.apcata.2003.10.013-
dc.identifier.urihttp://hdl.handle.net/11147/1879-
dc.description.abstractA temperature-programmed reduction study of equilibrium fluid catalytic cracking (FCC) catalysts has shown three hydrogen-consumption peaks associated with contaminanted metals. A low-temperature peak, located near 510°C, is produced by the reduction of several components in the catalyst. Highly-dispersed vanadium contributes to this peak. A high-temperature peak, located near 800°C, is produced by reduction of nickel aluminate or nickel silicate compounds. A linear relationship exists between the area of the high-temperature peak and nickel concentration on equilibrium catalysts. An intermediate-temperature peak, located near 690°C, appears to be related to some form of vanadium compound. The intermediate-temperature peak does not occur on low-vanadium-concentration equilibrium catalysts, but is observed at higher vanadium-contamination levels. The presence of the 690°C peak was found by deconvoluting hydrogen-consumption data. The existence of this intermediate-temperature peak was proven by external reduction of highly-contaminated equilibrium catalyst at 500 and 700°C. External reduction at 500°C removes the low-temperature peak from the temperature-programmed reduction (TPR) spectrum. External reduction at 700°C removes both the low-temperature and intermediate-temperature peaks from the TPR spectrum. The difference in spectrum between calcined and 700°C reduced samples shows a clear spectrum with only the low and intermediate-temperature peaks present.en_US
dc.language.isoenen_US
dc.publisherElsevier Ltd.en_US
dc.relation.ispartofApplied Catalysis A: Generalen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCatalystsen_US
dc.subjectPretreatmenten_US
dc.subjectTemperature-programmed reductionen_US
dc.subjectFluidized catalytic cracking catalystsen_US
dc.subjectNickelen_US
dc.subjectVanadiumen_US
dc.titleTemperature-programmed reduction of metal-contaminated fluid catalytic cracking (FCC) catalystsen_US
dc.typeArticleen_US
dc.institutionauthorBayraktar, Oğuz-
dc.departmentİzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.volume260en_US
dc.identifier.issue1en_US
dc.identifier.startpage125en_US
dc.identifier.endpage132en_US
dc.identifier.wosWOS:000220493500016en_US
dc.identifier.scopus2-s2.0-1542316834en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1016/j.apcata.2003.10.013-
dc.relation.doi10.1016/j.apcata.2003.10.013en_US
dc.coverage.doi10.1016/j.apcata.2003.10.013en_US
local.message.claim2022-06-06T15:09:57.039+0300|||rp02965|||submit_approve|||dc_contributor_author|||None*
dc.identifier.wosqualityQ1-
dc.identifier.scopusqualityQ1-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.openairetypeArticle-
item.languageiso639-1en-
item.fulltextWith Fulltext-
crisitem.author.dept03.02. Department of Chemical Engineering-
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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