DISSOLUTION OF 2 TURKISH LIGNITES IN TETRALIN UNDER HYDROGEN OR NITROGEN - EFFECTS OF THE EXTRACTION PARAMETERS ON THE CONVERSION

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dc.contributor.authorCEYLAN, K
dc.contributor.authorOLCAY, A
dc.date.accessioned2024-08-04T20:11:45Z
dc.date.available2024-08-04T20:11:45Z
dc.date.issued1992
dc.departmentİnönü Üniversitesien_US
dc.description.abstractTwo Turkish lignites were extracted with tetralin in a batch autoclave under nitrogen or hydrogen atmosphere. The isothermal extraction temperatures ranged from 325 to 425-degrees-C at 25-degrees-C intervals and the isothermal extraction periods were 0, 30, 60 and 120 min. After removal of char and solvent, the remaining products, which were completely soluble in tetrahydrofuran, were separated into three fractions: preasphaltenes (benzene insolubles), asphaltenes (benzene soluble, n-pentane insolubles) and oils (n-pentane solubles) by successive extractions with benzene and n-pentane. The variations in coal conversion and soluble product composition were investigated with respect to the extraction conditions. The conversion was low below 350-degrees-C but high above 375-degrees-C. As the conversion of the lignites increases, transformation of tetralin to naphthalene also increases. An increase in extraction period affects the product composition but not the percentage conversion, at temperatures of 400-degrees-C and above. In general, the effect of type of gaseous atmosphere on the total conversion was minor. Depending on the extraction conditions, however, the gaseous atmosphere affected the soluble product composition.en_US
dc.identifier.doi10.1016/0016-2361(92)90151-D
dc.identifier.endpage544en_US
dc.identifier.issn0016-2361
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-0000978359en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage539en_US
dc.identifier.urihttps://doi.org/10.1016/0016-2361(92)90151-D
dc.identifier.urihttps://hdl.handle.net/11616/92976
dc.identifier.volume71en_US
dc.identifier.wosWOS:A1992HP55300008en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherButterworth-Heinemann Ltden_US
dc.relation.ispartofFuelen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLIGNITEen_US
dc.subjectEXTRACTION PARAMETERSen_US
dc.subjectTHFSen_US
dc.titleDISSOLUTION OF 2 TURKISH LIGNITES IN TETRALIN UNDER HYDROGEN OR NITROGEN - EFFECTS OF THE EXTRACTION PARAMETERS ON THE CONVERSIONen_US
dc.typeArticleen_US

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