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Cited by 13 publications
(5 citation statements)
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“…It is known that residues >450 °C in HCO and ET consist of polycyclic aromatic compounds. , ET, as other product of pyrolysis of petroleum feedstocks, is characterized by the content of technogenic asphaltenes (heptane-insoluble residue by IP 143) and resins (polar compounds by IP 469). Technogenic asphaltenes ( W = 14 wt %) isolated from ET are characterized by a molecular mass distribution from 100 to 1200 m / z , with M max = 550 m / z .…”
Section: Resultsmentioning
confidence: 99%
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“…It is known that residues >450 °C in HCO and ET consist of polycyclic aromatic compounds. , ET, as other product of pyrolysis of petroleum feedstocks, is characterized by the content of technogenic asphaltenes (heptane-insoluble residue by IP 143) and resins (polar compounds by IP 469). Technogenic asphaltenes ( W = 14 wt %) isolated from ET are characterized by a molecular mass distribution from 100 to 1200 m / z , with M max = 550 m / z .…”
Section: Resultsmentioning
confidence: 99%
“…The lowest conversion was obtained for VR + HCO (8.7 wt %). Fang et al, who previously studied the hydrogen-donating ability of HCO, noted its relatively low hydrogen transfer activity and discussed the conditions for prehydrogenation of the additive to increase it.…”
Section: Resultsmentioning
confidence: 99%
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“…Asphaltenes are complex structures composed of saturated, aromatic, and heteroaromatic rings framed by alkyl substituents. Naphthenic and aromatic structural fragments can be condensed into a single system or linked by paraffin chains of various lengths or rings and functional groups. In addition to the analysis of elemental composition and determination of average molecular masses, various methods of analysis have been recently used to characterize asphaltenes. These are X-ray diffraction (XRD), infrared (IR) spectroscopy, nuclear magnetic resonance (NMR), , small-angle X-ray scattering (SAXS), , and high-resolution mass spectrometry. , These analytical methods are used to evaluate the degree of aromaticity of their molecules, determine the number and length of the side alkyl substituents, and get an idea of the presence and distribution of various classes of heteroatomic structures. The information obtained is important for understanding the chemistry of asphaltene molecules but does not provide a complete picture of their composition and structure.…”
Section: Introductionmentioning
confidence: 99%