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Comprehensive analysis of multiple asphaltene fractions combining statistical analyses and novel visualization tools
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Thomas, Mary J., Jones, Hugh E., Palacio Lozano, Diana Catalina, Gavard, Remy, Carney, Shaun and Barrow, Mark P. (2021) Comprehensive analysis of multiple asphaltene fractions combining statistical analyses and novel visualization tools. Fuel, 291 . 120132. doi:10.1016/j.fuel.2021.120132 ISSN 0016-2361.
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Official URL: https://doi.org/10.1016/j.fuel.2021.120132
Abstract
Marine heavy fuel oils (HFOs), derived from and often blended with hydrotreated residual cuts, typically possess high boiling point, viscosity, and molecular complexity, and so are inherently challenging to analyze at the molecular level. Their high asphaltene content is associated with undesirable phenomena including flocculation, deposition, and black paint formation in marine engines. Asphaltene fractions of eight HFOs were selected for analysis by Fourier transform ion cyclotron resonance mass spectrometry (FTICR MS) due to their differing behaviour, including responsiveness to additive chemistries designed to stabilise against asphaltene handling issues. A selected mass region was isolated and fragmented using infra-red multiphoton dissociation (IRMPD), and the relative heteroatom content in asphaltene cores and smaller aromatic moieties, and degree of alkylation and aromaticity, of the fragments generated for each sample compared. A more extensive elucidation of the molecular-level differences between the n-alkane insoluble asphaltene fractions is afforded, with key components underlying variation in bulk behaviour identified through statistical approaches. The approach presented allows additive packages to be adjusted to address asphaltene handling issues presented by more challenging samples, and simpler and more ubiquitous formulations may eventually be developed.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Marine engines -- Fuel consumption, Asphaltene, Desulfurization , Asphaltene -- Desulfurization , Fourier transform nuclear magnetic resonance spectroscopy , Mass spectrometry | ||||||||||||||||||
Journal or Publication Title: | Fuel | ||||||||||||||||||
Publisher: | Elsevier Ltd | ||||||||||||||||||
ISSN: | 0016-2361 | ||||||||||||||||||
Official Date: | 1 May 2021 | ||||||||||||||||||
Dates: |
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Volume: | 291 | ||||||||||||||||||
Article Number: | 120132 | ||||||||||||||||||
DOI: | 10.1016/j.fuel.2021.120132 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
Date of first compliant deposit: | 17 March 2021 | ||||||||||||||||||
Date of first compliant Open Access: | 25 January 2022 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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