Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques

a Escola Universitária Politècnica de Manresa, Av. Bases de Manresa 61 -73, E-08240 -Manresa, Catalonia, Spain b Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Cienttíficas, Campus Reina de Mercedes, Apartado 1052, E-41080 Sevilla, Spain c Instituto de...

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Detalles Bibliográficos
Autores: Olivella, Maria Angels, Río Andrade, José Carlos del, Palacios, J., Vairavamurthy, M.A., de las Heras, F.X.C.
Tipo de recurso: artículo
Fecha de publicación:2002
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/39874
Acceso en línea:http://hdl.handle.net/10261/39874
Access Level:acceso abierto
Palabra clave:Humic acid
Leonardite coal
Pyrolysis GC-MS
XPS
XANES
Tetramethyl-ammonium hydroxide
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spelling Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniquesOlivella, Maria AngelsRío Andrade, José Carlos delPalacios, J.Vairavamurthy, M.A.de las Heras, F.X.C.Humic acidLeonardite coalPyrolysis GC-MSXPSXANESTetramethyl-ammonium hydroxidea Escola Universitária Politècnica de Manresa, Av. Bases de Manresa 61 -73, E-08240 -Manresa, Catalonia, Spain b Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Cienttíficas, Campus Reina de Mercedes, Apartado 1052, E-41080 Sevilla, Spain c Instituto de Catálisis y Petroquímica, Consejo Superior de Investigaciones Científicas, Campus Universidad Autónoma, Cantoblanco, E-28049 Madrid, Spain d Department of Applied Science, Brookhaven National Laboratory, Upton, New York 11973, USAWe studied the humic-acid fraction isolated from a Spanish leonardite coal (Torrelapaja, Cretaceous basin belonging to the Utrillas facies) using a suite of chromatographic and spectroscopic techniques to characterize the structure of the carbon skeleton and the nature of the sulfur-containing compounds. In particular, analytical pyrolysis coupled to gas chromatography-mass spectrometry was used to gain detailed molecular information on the organic structures. Pyrolysis in the presence of a methylating agent (tetramethyl-ammonium hydroxide, TMAH) was used to characterize polar moieties. We employed non-destructive techniques, XANES and XPS, to investigate the composition of the sulfur functionalities (such as sulfide, polysulfide, thiophene, sulfoxide, sulfonate and sulfate). The combination of these different approaches allows a more complete understanding of the organic sulfur structures in the leonardite coal. In agreement with previous studies, our results show that oxidized sulfur functionalities, such as sulfonate and sulfate, represent the major forms of sulfur in leonardite coal.The Financial support of Spanish contract PB97-0682 and US Department of Energy support through the Office of Basic Energy Sciences, Geosciences Program to the Brookhaven National Laboratory (Contract no. DEAC02-98CH10886) are acknowledged. Murthy Vairavamurthy acknowledges support by the U.S. Department of Energy, Division of Geosciences of the Office of the Basic Energy Sciences under Contract No. DE-AC02-98CH10886 for his contribution.Peer reviewedElsevierComisión Interministerial de Ciencia y Tecnología, CICYT (España)Department of Energy (US)201120112002info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/39874reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/398742026-05-22T06:33:51Z
dc.title.none.fl_str_mv Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
title Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
spellingShingle Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
Olivella, Maria Angels
Humic acid
Leonardite coal
Pyrolysis GC-MS
XPS
XANES
Tetramethyl-ammonium hydroxide
title_short Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
title_full Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
title_fullStr Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
title_full_unstemmed Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
title_sort Characterization of humic acid from leonardite coal: an integrated study of Py-GC-MS, XPS and XANES techniques
dc.creator.none.fl_str_mv Olivella, Maria Angels
Río Andrade, José Carlos del
Palacios, J.
Vairavamurthy, M.A.
de las Heras, F.X.C.
author Olivella, Maria Angels
author_facet Olivella, Maria Angels
Río Andrade, José Carlos del
Palacios, J.
Vairavamurthy, M.A.
de las Heras, F.X.C.
author_role author
author2 Río Andrade, José Carlos del
Palacios, J.
Vairavamurthy, M.A.
de las Heras, F.X.C.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Department of Energy (US)
dc.subject.none.fl_str_mv Humic acid
Leonardite coal
Pyrolysis GC-MS
XPS
XANES
Tetramethyl-ammonium hydroxide
topic Humic acid
Leonardite coal
Pyrolysis GC-MS
XPS
XANES
Tetramethyl-ammonium hydroxide
description a Escola Universitária Politècnica de Manresa, Av. Bases de Manresa 61 -73, E-08240 -Manresa, Catalonia, Spain b Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Cienttíficas, Campus Reina de Mercedes, Apartado 1052, E-41080 Sevilla, Spain c Instituto de Catálisis y Petroquímica, Consejo Superior de Investigaciones Científicas, Campus Universidad Autónoma, Cantoblanco, E-28049 Madrid, Spain d Department of Applied Science, Brookhaven National Laboratory, Upton, New York 11973, USA
publishDate 2002
dc.date.none.fl_str_mv 2002
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/39874
url http://hdl.handle.net/10261/39874
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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