Elucidation of the Average Molecular Structure of Argentinian Asphaltenes

Autores
Bava, Yanina Belén; Gerones, Mariana; Buceta, David; De La Iglesia Rodríguez, Darío; López-Quintela, M. Arturo; Erben, Mauricio Federico
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Petroleum asphaltenes were separated from three different Argentinian crude oils. The asphaltene fractions were extracted by precipitation employing n-pentane and n-heptane solvents, and the coprecipitated resins were removed via Soxhlet extraction. The asphaltenes were characterized by elemental analysis, thermogravimetric analysis, laser desorption ionization mass spectrometry, Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance, powder X-ray diffraction, and Raman spectroscopy. It was found that the asphaltene fractions present both a higher content of heteroatoms and a major degree of aromaticity, when n-heptane is employed. Average structural parameters were obtained by a comprehensive analysis of the experimental data, including those describing the central polycyclic aromatic hydrocarbon (PAH) cores and lateral chains. Thus, a hypothetical average molecular structure is proposed for the Argentinian asphaltenes. The average model molecules have a nucleus of PAHs arranged as pericondensed systems of 4-6 fused aromatic rings, with naphthenic groups and/or alkyl chains of 5-10 carbon long attached.
Fil: Bava, Yanina Belén. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; Argentina
Fil: Gerones, Mariana. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; Argentina
Fil: Buceta, David. Universidad de Santiago de Compostela; España
Fil: De La Iglesia Rodríguez, Darío. Universidad de Santiago de Compostela; España
Fil: López-Quintela, M. Arturo. Universidad de Santiago de Compostela; España
Fil: Erben, Mauricio Federico. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; Argentina
Materia
Asfaltenos
Petróleo
Espectroscopia
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/130098
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/130098
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Elucidation of the Average Molecular Structure of Argentinian AsphaltenesBava, Yanina BelénGerones, MarianaBuceta, DavidDe La Iglesia Rodríguez, DaríoLópez-Quintela, M. ArturoErben, Mauricio FedericoAsfaltenosPetróleoEspectroscopiahttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Petroleum asphaltenes were separated from three different Argentinian crude oils. The asphaltene fractions were extracted by precipitation employing n-pentane and n-heptane solvents, and the coprecipitated resins were removed via Soxhlet extraction. The asphaltenes were characterized by elemental analysis, thermogravimetric analysis, laser desorption ionization mass spectrometry, Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance, powder X-ray diffraction, and Raman spectroscopy. It was found that the asphaltene fractions present both a higher content of heteroatoms and a major degree of aromaticity, when n-heptane is employed. Average structural parameters were obtained by a comprehensive analysis of the experimental data, including those describing the central polycyclic aromatic hydrocarbon (PAH) cores and lateral chains. Thus, a hypothetical average molecular structure is proposed for the Argentinian asphaltenes. The average model molecules have a nucleus of PAHs arranged as pericondensed systems of 4-6 fused aromatic rings, with naphthenic groups and/or alkyl chains of 5-10 carbon long attached.Fil: Bava, Yanina Belén. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; ArgentinaFil: Gerones, Mariana. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; ArgentinaFil: Buceta, David. Universidad de Santiago de Compostela; EspañaFil: De La Iglesia Rodríguez, Darío. Universidad de Santiago de Compostela; EspañaFil: López-Quintela, M. Arturo. Universidad de Santiago de Compostela; EspañaFil: Erben, Mauricio Federico. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; ArgentinaAmerican Chemical Society2019-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/130098Bava, Yanina Belén; Gerones, Mariana; Buceta, David; De La Iglesia Rodríguez, Darío; López-Quintela, M. Arturo; et al.; Elucidation of the Average Molecular Structure of Argentinian Asphaltenes; American Chemical Society; Energy & Fuels (print); 33; 4; 4-2019; 2950-29600887-0624CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.energyfuels.8b04318info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.energyfuels.8b04318info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:55:47Zoai:ri.conicet.gov.ar:11336/130098instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:55:48.164CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
title Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
spellingShingle Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
Bava, Yanina Belén
Asfaltenos
Petróleo
Espectroscopia
title_short Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
title_full Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
title_fullStr Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
title_full_unstemmed Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
title_sort Elucidation of the Average Molecular Structure of Argentinian Asphaltenes
dc.creator.none.fl_str_mv Bava, Yanina Belén
Gerones, Mariana
Buceta, David
De La Iglesia Rodríguez, Darío
López-Quintela, M. Arturo
Erben, Mauricio Federico
author Bava, Yanina Belén
author_facet Bava, Yanina Belén
Gerones, Mariana
Buceta, David
De La Iglesia Rodríguez, Darío
López-Quintela, M. Arturo
Erben, Mauricio Federico
author_role author
author2 Gerones, Mariana
Buceta, David
De La Iglesia Rodríguez, Darío
López-Quintela, M. Arturo
Erben, Mauricio Federico
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Asfaltenos
Petróleo
Espectroscopia
topic Asfaltenos
Petróleo
Espectroscopia
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Petroleum asphaltenes were separated from three different Argentinian crude oils. The asphaltene fractions were extracted by precipitation employing n-pentane and n-heptane solvents, and the coprecipitated resins were removed via Soxhlet extraction. The asphaltenes were characterized by elemental analysis, thermogravimetric analysis, laser desorption ionization mass spectrometry, Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance, powder X-ray diffraction, and Raman spectroscopy. It was found that the asphaltene fractions present both a higher content of heteroatoms and a major degree of aromaticity, when n-heptane is employed. Average structural parameters were obtained by a comprehensive analysis of the experimental data, including those describing the central polycyclic aromatic hydrocarbon (PAH) cores and lateral chains. Thus, a hypothetical average molecular structure is proposed for the Argentinian asphaltenes. The average model molecules have a nucleus of PAHs arranged as pericondensed systems of 4-6 fused aromatic rings, with naphthenic groups and/or alkyl chains of 5-10 carbon long attached.
Fil: Bava, Yanina Belén. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; Argentina
Fil: Gerones, Mariana. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; Argentina
Fil: Buceta, David. Universidad de Santiago de Compostela; España
Fil: De La Iglesia Rodríguez, Darío. Universidad de Santiago de Compostela; España
Fil: López-Quintela, M. Arturo. Universidad de Santiago de Compostela; España
Fil: Erben, Mauricio Federico. Facultad de Ciencias Exactas, Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; Argentina
description Petroleum asphaltenes were separated from three different Argentinian crude oils. The asphaltene fractions were extracted by precipitation employing n-pentane and n-heptane solvents, and the coprecipitated resins were removed via Soxhlet extraction. The asphaltenes were characterized by elemental analysis, thermogravimetric analysis, laser desorption ionization mass spectrometry, Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance, powder X-ray diffraction, and Raman spectroscopy. It was found that the asphaltene fractions present both a higher content of heteroatoms and a major degree of aromaticity, when n-heptane is employed. Average structural parameters were obtained by a comprehensive analysis of the experimental data, including those describing the central polycyclic aromatic hydrocarbon (PAH) cores and lateral chains. Thus, a hypothetical average molecular structure is proposed for the Argentinian asphaltenes. The average model molecules have a nucleus of PAHs arranged as pericondensed systems of 4-6 fused aromatic rings, with naphthenic groups and/or alkyl chains of 5-10 carbon long attached.
publishDate 2019
dc.date.none.fl_str_mv 2019-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/130098
Bava, Yanina Belén; Gerones, Mariana; Buceta, David; De La Iglesia Rodríguez, Darío; López-Quintela, M. Arturo; et al.; Elucidation of the Average Molecular Structure of Argentinian Asphaltenes; American Chemical Society; Energy & Fuels (print); 33; 4; 4-2019; 2950-2960
0887-0624
CONICET Digital
CONICET
url http://hdl.handle.net/11336/130098
identifier_str_mv Bava, Yanina Belén; Gerones, Mariana; Buceta, David; De La Iglesia Rodríguez, Darío; López-Quintela, M. Arturo; et al.; Elucidation of the Average Molecular Structure of Argentinian Asphaltenes; American Chemical Society; Energy & Fuels (print); 33; 4; 4-2019; 2950-2960
0887-0624
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.energyfuels.8b04318
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.energyfuels.8b04318
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
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:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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