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dc.contributor.authorRazvigorova, Mariaen_US
dc.contributor.authorBudinova, Temenuzhka K.en_US
dc.contributor.authorTsyntsarski, Boyko G.en_US
dc.contributor.authorPetrova, Bilyana N.en_US
dc.contributor.authorEkinci, Ekremen_US
dc.contributor.authorAtakül, Hüsnüen_US
dc.date.accessioned2015-01-15T23:01:05Z
dc.date.available2015-01-15T23:01:05Z
dc.date.issued2008-11-03
dc.identifier.citationRazvigorova, M., Budinova, T., Tsyntsarski, B., Petrova, B., Ekinci, E., & Atakul, H. (2008). The composition of acids in bitumen and in products from saponification of kerogen: Investigation of their role as connecting kerogen and mineral matrix. International Journal of Coal Geology, 76(3), 243-249. doi:10.1016/j.coal.2008.07.011en_US
dc.identifier.issn0166-5162
dc.identifier.otherWOS:000260711300006
dc.identifier.urihttps://hdl.handle.net/11729/280
dc.identifier.urihttp://dx.doi.org/10.1016/j.coal.2008.07.011
dc.description.abstractIn order to obtain more information and to understand the nature of relation between organic and mineral matter in oil shales, the compositions of soluble bitumen fractions obtained by extraction from Bulgarian oil shales before and after demineralization with 10% HCl, concentrated HE and a HF/HCl mixture were investigated. The four extracts were quantitatively examined by IR and H-1 NMR spectroscopy. The investigation of isolated acidic material of the bitumen fractions showed that the fatty acids are present in bitumen fractions as free acids, esters and salts. The amount of free acids in bitumen is very small. The dominant part of bitumen acids is associated with mineral components of the oil shales as well as part of them is included in the mineral matrix, and can be separated only after deep demineralization. The kerogen of the oil shales, obtained after separation of the bitumen fractions and mineral components, was subjected to saponification in order to determine the amount of acids, bound as esters to the kerogen matrix. The major components found were n-carboxylic, alpha,omega,-di-carboxylic, and aromatic acids. The connection of kerogen with mineral components is accomplished by the participation of carboxylic and complicated ester bonds. Experimental data for the composition of bitumen acids give evidence that algae and terrestrial materials are initial sources in the formation of soluble organic matter of Bulgarian oil shale.en_US
dc.language.isoengen_US
dc.publisherElsevier Science BVen_US
dc.relation.isversionof10.1016/j.coal.2008.07.011
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOil shaleen_US
dc.subjectExtractionen_US
dc.subjectBitumenen_US
dc.subjectKerogenen_US
dc.subjectSaponificationen_US
dc.subjectCarboxylic acidsen_US
dc.titleThe composition of acids in bitumen and in products from saponification of kerogen: Investigation of their role as connecting kerogen and mineral matrixen_US
dc.typearticleen_US
dc.description.versionPublisher's Versionen_US
dc.contributor.departmentIşık Üniversitesi, Mühendislik Fakültesi, Kimya Mühendisliğien_US
dc.contributor.departmentIşık University, Faculty of Engineering, Department of Chemical Engineeringen_US
dc.identifier.volume76
dc.identifier.issue3
dc.identifier.startpage243
dc.identifier.endpage249
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.institutionauthorEkinci, Ekremen_US


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