Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry

Algerian crude oil displays a marked propensity for asphaltene precipitation, leading to solid deposits during extraction, transportation, and storage. The relationship between precipitation and chemical composition is unclear; in fact, Algerian crude oil actually features a low asphaltene concentra...

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Detalles Bibliográficos
Autores: Saad, Fatima, Bounaceur, Boumedienne, Daaou, Mortada, Avilés Moreno, Juan Ramón, Martínez-Haya, Bruno
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/716665
Acceso en línea:http://hdl.handle.net/10486/716665
https://dx.doi.org/10.1021/acs.energyfuels.1c00333
Access Level:acceso abierto
Palabra clave:Asphaltenes
petroleum
crude oil
Química
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spelling Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometrySaad, FatimaBounaceur, BoumedienneDaaou, MortadaAvilés Moreno, Juan RamónMartínez-Haya, BrunoAsphaltenespetroleumcrude oilQuímicaAlgerian crude oil displays a marked propensity for asphaltene precipitation, leading to solid deposits during extraction, transportation, and storage. The relationship between precipitation and chemical composition is unclear; in fact, Algerian crude oil actually features a low asphaltene concentration, despite its relatively large rate of deposit formation. The rationalization of the precipitation process and its remediation should benefit from a molecular characterization of the crude oil. In this study, two unstable asphaltene fractions (A1 and A2) from two different deposits, and two resin crude oil fractions (R1 and R2) from the Hassi-Messaoud Algerian field have been characterized at the molecular level by means of high-resolution mass spectrometry with an Atmospheric Pressure Chemical Ionization (APCI) source. Positively and negatively charged compounds with molecular weights 200-1200 m/z were detected. Several thousand molecular stoichiometries were identified and classified for each sample, in terms of heteroatom content and aromaticity, searching for trends characteristic of the two asphaltenes and of the associated resins. The A2 asphaltene, from a downstream storage tank, displays a higher aromaticity and O-heteroatom content, which correlates with an enhanced aggregation propensity, in comparison to the A1 fraction, collected at the well bore. The resin fractions are found to be abundant in aliphatic hydrocarbons and heteroatomic compounds of moderate aromaticity. The more polar resin fraction, R2, is enriched in N-containing species, with respect to the less polar resin fraction R1, which correlates with the stabilizing function observed in previous works. The results stress the view of crude oil fractions as complex mixtures, rather than in terms of average prototypical compounds, when facing the understanding of asphaltene deposition conditionsThe authors would like to thank DGRSDT and ATRST of Algerian MESRS for their financial technical support. B.M.H. acknowledges support from the Ministry of Science of Spain (MICINN) and European ERDF funds (Grant No. PID2019-110430GB-C22) and Junta de Andalucía (Grant No. UPO-1265695)American Chemical SocietyDepartamento de Química Física AplicadaFacultad de Ciencias20212021-05-06research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/716665https://dx.doi.org/10.1021/acs.energyfuels.1c00333reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7166652026-06-23T12:46:27Z
dc.title.none.fl_str_mv Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
title Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
spellingShingle Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
Saad, Fatima
Asphaltenes
petroleum
crude oil
Química
title_short Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
title_full Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
title_fullStr Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
title_full_unstemmed Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
title_sort Molecular characterization of nonvolatile fractions of Algerian petroleum with high-resolution mass spectrometry
dc.creator.none.fl_str_mv Saad, Fatima
Bounaceur, Boumedienne
Daaou, Mortada
Avilés Moreno, Juan Ramón
Martínez-Haya, Bruno
author Saad, Fatima
author_facet Saad, Fatima
Bounaceur, Boumedienne
Daaou, Mortada
Avilés Moreno, Juan Ramón
Martínez-Haya, Bruno
author_role author
author2 Bounaceur, Boumedienne
Daaou, Mortada
Avilés Moreno, Juan Ramón
Martínez-Haya, Bruno
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Química Física Aplicada
Facultad de Ciencias
dc.subject.none.fl_str_mv Asphaltenes
petroleum
crude oil
Química
topic Asphaltenes
petroleum
crude oil
Química
description Algerian crude oil displays a marked propensity for asphaltene precipitation, leading to solid deposits during extraction, transportation, and storage. The relationship between precipitation and chemical composition is unclear; in fact, Algerian crude oil actually features a low asphaltene concentration, despite its relatively large rate of deposit formation. The rationalization of the precipitation process and its remediation should benefit from a molecular characterization of the crude oil. In this study, two unstable asphaltene fractions (A1 and A2) from two different deposits, and two resin crude oil fractions (R1 and R2) from the Hassi-Messaoud Algerian field have been characterized at the molecular level by means of high-resolution mass spectrometry with an Atmospheric Pressure Chemical Ionization (APCI) source. Positively and negatively charged compounds with molecular weights 200-1200 m/z were detected. Several thousand molecular stoichiometries were identified and classified for each sample, in terms of heteroatom content and aromaticity, searching for trends characteristic of the two asphaltenes and of the associated resins. The A2 asphaltene, from a downstream storage tank, displays a higher aromaticity and O-heteroatom content, which correlates with an enhanced aggregation propensity, in comparison to the A1 fraction, collected at the well bore. The resin fractions are found to be abundant in aliphatic hydrocarbons and heteroatomic compounds of moderate aromaticity. The more polar resin fraction, R2, is enriched in N-containing species, with respect to the less polar resin fraction R1, which correlates with the stabilizing function observed in previous works. The results stress the view of crude oil fractions as complex mixtures, rather than in terms of average prototypical compounds, when facing the understanding of asphaltene deposition conditions
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-05-06
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/716665
https://dx.doi.org/10.1021/acs.energyfuels.1c00333
url http://hdl.handle.net/10486/716665
https://dx.doi.org/10.1021/acs.energyfuels.1c00333
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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