Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4640
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dc.contributor.authorGözmen, Belgin-
dc.contributor.authorArtok, Levent-
dc.contributor.authorErbatur, Gaye-
dc.contributor.authorErbatur, Oktay-
dc.date.accessioned2016-05-16T08:00:26Z
dc.date.available2016-05-16T08:00:26Z
dc.date.issued2002-09
dc.identifier.citationGözmen, B, Artok, L., Erbatur, G., and Erbatur, O. (2002). Direct liquefaction of high-sulfur coals: Effect of the catalyst, the solvent, and the mineral matter. Energy and Fuels, 16(5), 1040-1047. doi:10.1021/ef0102667en_US
dc.identifier.issn0887-0624
dc.identifier.issn0887-0624-
dc.identifier.issn1520-5029-
dc.identifier.urihttp://doi.org/10.1021/ef0102667
dc.identifier.urihttp://hdl.handle.net/11147/4640
dc.description.abstractTwo low-rank coals with high sulfur contents (Gediz subbituminous coal: 7.6 wt % S:dry basis. Çayirhan lignite: 5.7 wt% S:dry basis.) were subjected to hydroliquefaction. Liquefaction conditions included dry or solvent mediated runs under pressurized hydrogen without added catalyst or with the impregnated catalyst precursor ammonium heptamolybdate (AHM). Gediz coal having higher sulfur content gave 90% conversion in the absence of catalyst and solvent. Maximum conversion (98%) and maximum oil + gas yield (70%) from this coal were obtained by impregnating AHM onto coal and carrying out liquefaction in H 2/tetralin system at 450 °C for 30 min. Under the same conditions, Çayirhan lignite gave 85% conversion and 70.5% oil + gas yield. The superior hydrodesulfurization effect of impregnated AHM on the oil fraction when used in the absence of solvent (less than 0.1% S in lignite's oil and less than 1% S in subbituminous coal's oil following one-stage hydrogenation) is a promising finding of this work. AHM was found to be much more effective in liquefaction of Çayirhan lignite and this has been ascribed to the well-dispersion of AHM throughout this lignite's structure via a cation-exchange mechanism through oxygen functionalities. Strong evidence for the catalytic effect of clay minerals in coal structure on char-forming reactions during liquefaction was observed by making use of liquefaction reactions of demineralized coal samples. It was also observed that tetralin had a retarding effect on the condensation and subsequent cross-linking reactions.en_US
dc.description.sponsorshipThe Scientific and Technical Research Council of Turkey through the project KTCAG-126en_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.ispartofEnergy and Fuelsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHydrodesulfurizationen_US
dc.subjectLigniteen_US
dc.subjectCatalystsen_US
dc.subjectCrosslinkingen_US
dc.subjectDesulfurizationen_US
dc.subjectHydrogenationen_US
dc.titleDirect liquefaction of high-sulfur coals: Effect of the catalyst, the solvent, and the mineral matteren_US
dc.typeArticleen_US
dc.authoridTR1860en_US
dc.institutionauthorArtok, Levent-
dc.departmentIzmir Institute of Technology. Chemistryen_US
dc.identifier.volume16en_US
dc.identifier.issue5en_US
dc.identifier.startpage1040en_US
dc.identifier.endpage1047en_US
dc.identifier.wosWOS:000178122100005en_US
dc.identifier.scopus2-s2.0-0036740317en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1021/ef0102667-
dc.relation.doi10.1021/ef0102667en_US
dc.coverage.doi10.1021/ef0102667en_US
dc.identifier.scopusqualityQ1-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
crisitem.author.dept04.01. Department of Chemistry-
Appears in Collections:Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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