2020
DOI: 10.1021/acs.energyfuels.0c03751
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Investigation of Island/Single-Core- and Archipelago/Multicore-Enriched Asphaltenes and Their Solubility Fractions by Thermal Analysis Coupled with High-Resolution Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

Abstract: Despite extensive research, the molecular-level chemical characterization of asphaltenes, a highly aromatic solubility fraction of petroleum, remains an analytical challenge. This fraction is related to diverse problems in crude oil exploration, transportation, and refining. Two asphaltene architecture motifs are commonly discussed in the literature, "island" (single-core)-and "archipelago" (multicore)-type structures. The thermal desorption and pyrolysis behavior of island-and archipelago-enriched asphaltenes… Show more

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Cited by 39 publications
(79 citation statements)
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References 89 publications
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“…In contrast, archipelago-enriched asphaltenes revealed another distribution at intermediate DBE (5)(6)(7)(8)(9)(10)(11)(12) values and broad carbon number spread resulting from the pyrolysis of the bridged building blocks. 54 This compositional space is not dominantly found for the investigated plastic pyrolysis char. Thus, we hypothesize only a small fraction of archipelago-type aromatics and a strong influence of more condensed island-type structures as a pyrolytic precursor to even fully graphitized char.…”
Section: Resultsmentioning
confidence: 84%
See 1 more Smart Citation
“…In contrast, archipelago-enriched asphaltenes revealed another distribution at intermediate DBE (5)(6)(7)(8)(9)(10)(11)(12) values and broad carbon number spread resulting from the pyrolysis of the bridged building blocks. 54 This compositional space is not dominantly found for the investigated plastic pyrolysis char. Thus, we hypothesize only a small fraction of archipelago-type aromatics and a strong influence of more condensed island-type structures as a pyrolytic precursor to even fully graphitized char.…”
Section: Resultsmentioning
confidence: 84%
“…Utilizing the DBE, a measure for the unsaturation of a molecule, aromatic structures can be discussed. 54 Two molecular distributions can be observed, with the first distribution (Figure 5c, yellow) exhibiting rather low DBE values (1)(2)(3)(4)(5)(6) and a broad carbon number spread (#C 12-41) and the second pattern (Figure 5c, green) closely located to the planar aromatic limit with high DBE values (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) and a narrower carbon number spread (3-7 #C width). The first pattern accounts for the alkenes (DBE 1), dienes (DBE 2), benzene-(DBE 4), and naphthenic-derivatives (DBE 2-5) in detail discussed above and additionally validated here using the exact mass measurement.…”
Section: Resultsmentioning
confidence: 99%
“…Consequently, the plastic pyrolysis coke still revealed a significant contribution of pyrolyzable material belonging to the archipelago motif as a pyrolytic precursor to more condensed island motifs or even fully graphitized char. [54] Two distinct chemical distributions, one at higher DBE values with comparable low #C spread and second at low DBE 0-5 with a high #C spread, attributed to polycyclic aromatic hydrocarbons and alkenes, dienes, benzene-derivatives, and naphthenic species, can be found, respectively.…”
Section: Resultsmentioning
confidence: 95%
“…Utilizing the DBE, a measure for the unsaturation of a molecule, aromatic structures can be discussed. [54] Two molecular distributions can be observed, with the first distribution (Figure 5c, yellow) exhibiting rather low DBE values (1-6) and a broad carbon number spread (#C 12-41) and the second pattern (Figure 5c, green) closely located to the planar aromatic limit with high DBE values (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) and a narrower carbon number spread (3-7 #C width). The first pattern accounts for the alkenes (DBE 1), dienes (DBE 2), benzene-(DBE 4), and naphthenic-derivatives (DBE 2-5) in detail discussed above and additionally validated here using the exact mass measurement.…”
Section: Resultsmentioning
confidence: 98%
“…Utilizing the DBE, a measure for the unsaturation of a molecule, aromatic structures can be discussed. [54] Two molecular distributions can be observed, with the first distribution (Figure 5c, yellow) exhibiting rather low DBE values (1)(2)(3)(4)(5)(6) and a broad carbon number spread (#C 12-41) and the second pattern (Figure 5c, green) closely located to the planar aromatic limit with high DBE values (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) and a narrower carbon number spread (3-7 #C width). The first pattern accounts for the alkenes (DBE 1), dienes (DBE 2), benzene-(DBE 4), and naphthenic-derivatives (DBE 2-5) in detail discussed above and additionally validated here using the exact mass measurement.…”
Section: Resultsmentioning
confidence: 99%