Mesophase formation investigation in pitches by NMR relaxometry

Mesophase formation investigation in pitches by NMR relaxometry

Carbonaceous pitches are used as raw materials in advanced carbon products. This work aims at combining solvent extraction methodology with low field nuclear magnetic resonance relaxometry technique in order to characterize heated-treated samples of petroleum pitches. The T1 relaxation times showed two distinct domains: one was referring to the aromatic region and the other one was attributed to mesophase. The results also evidenced that the ¹H NMR relaxometry could be used as a new tool for the characterization of this kind of system.

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Main Authors: Lima,Antonio Luís dos Santos, Pinto,Angelo C., Gil,Rosane A. S. San, Tavares,Maria Inês B.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2007
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000200002
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spelling oai:scielo:S0103-505320070002000022007-06-13Mesophase formation investigation in pitches by NMR relaxometryLima,Antonio Luís dos SantosPinto,Angelo C.Gil,Rosane A. S. SanTavares,Maria Inês B. mesophase pitch nuclear magnetic resonance low field NMR relaxometry Carbonaceous pitches are used as raw materials in advanced carbon products. This work aims at combining solvent extraction methodology with low field nuclear magnetic resonance relaxometry technique in order to characterize heated-treated samples of petroleum pitches. The T1 relaxation times showed two distinct domains: one was referring to the aromatic region and the other one was attributed to mesophase. The results also evidenced that the ¹H NMR relaxometry could be used as a new tool for the characterization of this kind of system.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.18 n.2 20072007-04-01info:eu-repo/semantics/othertext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000200002en10.1590/S0103-50532007000200002
institution SCIELO
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country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Lima,Antonio Luís dos Santos
Pinto,Angelo C.
Gil,Rosane A. S. San
Tavares,Maria Inês B.
spellingShingle Lima,Antonio Luís dos Santos
Pinto,Angelo C.
Gil,Rosane A. S. San
Tavares,Maria Inês B.
Mesophase formation investigation in pitches by NMR relaxometry
author_facet Lima,Antonio Luís dos Santos
Pinto,Angelo C.
Gil,Rosane A. S. San
Tavares,Maria Inês B.
author_sort Lima,Antonio Luís dos Santos
title Mesophase formation investigation in pitches by NMR relaxometry
title_short Mesophase formation investigation in pitches by NMR relaxometry
title_full Mesophase formation investigation in pitches by NMR relaxometry
title_fullStr Mesophase formation investigation in pitches by NMR relaxometry
title_full_unstemmed Mesophase formation investigation in pitches by NMR relaxometry
title_sort mesophase formation investigation in pitches by nmr relaxometry
description Carbonaceous pitches are used as raw materials in advanced carbon products. This work aims at combining solvent extraction methodology with low field nuclear magnetic resonance relaxometry technique in order to characterize heated-treated samples of petroleum pitches. The T1 relaxation times showed two distinct domains: one was referring to the aromatic region and the other one was attributed to mesophase. The results also evidenced that the ¹H NMR relaxometry could be used as a new tool for the characterization of this kind of system.
publisher Sociedade Brasileira de Química
publishDate 2007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000200002
work_keys_str_mv AT limaantonioluisdossantos mesophaseformationinvestigationinpitchesbynmrrelaxometry
AT pintoangeloc mesophaseformationinvestigationinpitchesbynmrrelaxometry
AT gilrosaneassan mesophaseformationinvestigationinpitchesbynmrrelaxometry
AT tavaresmariainesb mesophaseformationinvestigationinpitchesbynmrrelaxometry
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