Electrospray Ionization FT-ICR MS Analysis of Polar Compounds in Natural Bitumen of Munaily-Mola Oil Sands and Its Asphaltenes
Kuoshiken U. Tileuberdi Y. Shi Q. Ongarbayev Y. Li S. Zhanbekov K. Kanzharkan E. Imanbayev Y.
September 2024Engineered Science Publisher
ES Materials and Manufacturing
2024#25
Herein, we present a study of the most polar compounds of Munaily-Mola bitumen and its asphaltenes using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) combined with electrospray ionization (ESI) technology at the molecular level. Spectral peaks of the negative ion ESI FT-ICR MS mass spectra of Munaily-Mola asphaltene are more intense at the low end of the mass, indicating the presence of more aromatic compounds. Molecular composition analysis of Munaily-Mola bitumen and its asphaltene samples shows that asphaltenes are enriched in compounds such as O2, N2, N1O2, N1, N1O1, N2O1, O4S1, O4, N1O3, O3, O3S1, O1, O5S1, O2S1, N1O4, O5, among which O2 compounds had the highest relative abundance. The relative abundance of O2 compounds is related to the petroleum acid content in the crude oil used to produce asphaltene. The distribution of DBE values in Munaily-Mola asphaltene is higher than DBE values in Munaily-Mola bitumen. Accordingly, the distribution center gravity of asphaltene is also high. This indicates that the highly aromatic compounds in bitumen are concentrated in asphaltenes.
: Oil sand , Asphaltene , Bitumen , Molecular composition , Polar compounds
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Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, 71, al-Farabi ave., Almaty, 050040, Kazakhstan
Laboratory of Petrochemical Processes, Institute of Сombustion Problems, 172, Bogenbai batyr str., Almaty, 050012, Kazakhstan
Institute of Natural Sciences and Geography, Abai Kazakh National Pedagogical University, 13, Dostyk ave., Almaty, 050010, Kazakhstan
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
Faculty of Chemistry and Chemical Technology
Laboratory of Petrochemical Processes
Institute of Natural Sciences and Geography
State Key Laboratory of Heavy Oil Processing
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