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Karakterizacija kerogena tipa III Tirolskog škriljca (Hahntennjoch, Austrija) zasnovana na njegovim oksidacionim proizvodima

dc.creatorBajc, S.
dc.creatorCvetković, Olga
dc.creatorAmbles, A.
dc.creatorVitorović, Dragomir
dc.date.accessioned2019-01-30T17:17:37Z
dc.date.available2019-01-30T17:17:37Z
dc.date.issued2008
dc.identifier.issn0352-5139
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/407
dc.description.abstractA 29-step alkaline permanganate degradation of type III kerogen from Tyrolean (Hahntennjoch, Austria) oil shale was performed. A high yield of oxidation products was obtained (93.7 % relative to the original kerogen): 0.5 % neutrals and bases, 19.5 % ether-soluble acids and 58.9 % of precipitated (PA). A substantial amount of kerogen carbon (14.8 %) was oxidized into carbon dioxide. The organic residue remaining after the final oxidation step was 6.9 %. The PA components were further oxidized and the total yields relative to original PA were 1.0 % neutrals and bases and 59.0 % ether-soluble acids, the non-degraded residue being 29.3 %. Detailed quantitative and qualitative analysis of all oxidation products suggested the Tyrolean shale kerogen to be a heterogeneous macromolecular substance consisting of three types of structures differing in composition and susceptibility towards alkaline permanganate: the first, resistant, presumably composed of aromatic structures linked by resorcinol ethereal bonds; the second, combined in nature, the aliphatic part comprising methyl-substituents and short cross-links, both easily oxidized into CO2, water and low molecular weight acids and aromatic structures yielding aromatic diand tri-carboxylic acids as oxidation products; finally the third, composed of aliphatic cross-links and substituents, alicyclic (and/or heterocyclic) and some aromatic structures, bound into units moderately resistant towards oxidation. The overall yields of kerogen and PA oxidation products lead towards a balance between aromatic, alkane monoand dicarboxylic and alkanepolycarboxylic acids, suggesting a shift of the structure of Tyrolean shale kerogen from typical aromatic reference type III towards a heterogeneous aromatic-aliphaticalicyclic type structure.en
dc.description.abstractStupnjevitom degradacijom kerogena tirolskog škriljca pomoću alkalnog permanganata dobijeni su visoki prinosi oksidacionih proizvoda. Dobijene nerastvorne kiseline naknadno su degradovane u 8 stupnjeva. Detaljna GC-MS analiza kiselina rastvornih u etru, dobijenih degradacijom kerogena, potom intermedijarnih nerastvornih kiselina, pokazala je da je kerogen tirolskog škriljca heterogena makromolekularna supstanca i da se sastoji iz tri tipa strukture, različitog sastava i različite osetljivosti na primenjeno oksidaciono sredstvo. Prvi tip je aromatične prirode sa rezorcinolnim etarskim umreženjem, otporan prema alkalnom permanganatu. Drugi se vrlo lako oksiduje, a sastoji se od aromatičnih struktura umreženih kratkim alifatičnim nizovima i sa većim udelom metil-supstituenata. Ovaj tip strukture je pri oksidaciji dao visok prinos SO2, alifatične kiseline malih molekulskih masa i aromatične dii trikarboksilne kiseline u visokom prinosu. Treći tip strukture je srednje osetljivosti na permanganat, a sastoji se od alicikličnih i/ili heterocikličnih i aromatičnih jezgara povezanih alifatičnim nizovima srednjih dužina. Kvantitativan odnos alifatičnih, aromatičnih i alkan-polikarboksilnih kiselina u oksidacionim proizvodima pokazao je da struktura kerogena tirolskog škriljca odstupa od tipskih, dominantno aromatičnih struktura tipa III, kojima pripada po svom H/C-O/C atomskom odnosu, i da je pomerena ka heterogenim, aromatično-alifatično-alicikličnim strukturama tipa II.sr
dc.publisherSerbian Chemical Society
dc.rightsopenAccess
dc.sourceJournal of the Serbian Chemical Society
dc.subjectTyrolean shaleen
dc.subjecttype III kerogenen
dc.subjectstructural characterizationen
dc.subjectalkaline permanganate degradationen
dc.subjectoxidation productsen
dc.titleCharacterization of type III kerogen from Tyrolean shale (Hahntennjoch, Austria) based on its oxidation productsen
dc.titleKarakterizacija kerogena tipa III Tirolskog škriljca (Hahntennjoch, Austrija) zasnovana na njegovim oksidacionim proizvodimasr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractЦветковић, Олга; Виторовиц, Д.; Бајц, С.; Aмблес, A.; Карактеризација керогена типа ИИИ Тиролског шкриљца (Хахнтенњоцх, Aустрија) заснована на његовим оксидационим производима; Карактеризација керогена типа ИИИ Тиролског шкриљца (Хахнтенњоцх, Aустрија) заснована на његовим оксидационим производима;
dc.citation.volume73
dc.citation.issue4
dc.citation.spage463
dc.citation.epage478
dc.citation.other73(4): 463-478
dc.citation.rankM23
dc.identifier.doi10.2298/JSCO804463B
dc.identifier.rcubConv_2392
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/9067/405.pdf
dc.identifier.wos000255421300009
dc.type.versionpublishedVersion


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