Characterization of asphaltene isolated from low-temperature coal tar

The asphaltene from low-temperature coal tar (LTCT) derived from Shanbei has been characterized through combination of conventional techniques, such as elemental analysis, molecular weight analyses, proton nuclear magnetic resonance, Fourier transform infrared spectroscopy and X-ray photoelectron sp...

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Published in	Fuel processing technology Vol. 138; pp. 413 - 418
Main Authors	Sun, Zhi-Hui, Li, Dong, Ma, Hai-Xia, Tian, Pan-Pan, Li, Xue-Kun, Li, Wen-Hong, Zhu, Yong-Hong
Format	Journal Article
Language	English
Published	Elsevier B.V 01.10.2015
Subjects	Aliphatic compounds Aromatic compounds Asphaltene Asphaltenes Asphalts Characterization Coal tar Constituents Crude oil Fourier transform infrared spectroscopy Low-temperature coal tar Molecular weight nuclear magnetic resonance spectroscopy oxygen petroleum Structure X-ray photoelectron spectroscopy Asphaltene Characterization Low-temperature coal tar Structure
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ISSN	0378-3820 1873-7188
DOI	10.1016/j.fuproc.2015.05.008

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Abstract	The asphaltene from low-temperature coal tar (LTCT) derived from Shanbei has been characterized through combination of conventional techniques, such as elemental analysis, molecular weight analyses, proton nuclear magnetic resonance, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The chemical structural analysis results confirm the view that asphaltenes are composed of confused aromatic rings bearing heteroatoms and alkyl and cycloalkyl constituents. Compared to asphaltenes from crude oils, the asphaltene from LTCT has lower molecular weight, higher aromaticity, higher contents of heteroatoms (especially oxygen) and shorter aliphatic side chains. [Display omitted] •LTCT asphaltene has higher aromaticity and shorter alkyl chain length.•LTCT asphaltene has higher contents of heteroatoms, particularly oxygen.•The oxygen atom exists in the form of C–O.
AbstractList	The asphaltene from low-temperature coal tar (LTCT) derived from Shanbei has been characterized through combination of conventional techniques, such as elemental analysis, molecular weight analyses, proton nuclear magnetic resonance, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The chemical structural analysis results confirm the view that asphaltenes are composed of confused aromatic rings bearing heteroatoms and alkyl and cycloalkyl constituents. Compared to asphaltenes from crude oils, the asphaltene from LTCT has lower molecular weight, higher aromaticity, higher contents of heteroatoms (especially oxygen) and shorter aliphatic side chains. The asphaltene from low-temperature coal tar (LTCT) derived from Shanbei has been characterized through combination of conventional techniques, such as elemental analysis, molecular weight analyses, proton nuclear magnetic resonance, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The chemical structural analysis results confirm the view that asphaltenes are composed of confused aromatic rings bearing heteroatoms and alkyl and cycloalkyl constituents. Compared to asphaltenes from crude oils, the asphaltene from LTCT has lower molecular weight, higher aromaticity, higher contents of heteroatoms (especially oxygen) and shorter aliphatic side chains. [Display omitted] •LTCT asphaltene has higher aromaticity and shorter alkyl chain length.•LTCT asphaltene has higher contents of heteroatoms, particularly oxygen.•The oxygen atom exists in the form of C–O.
Author	Sun, Zhi-Hui Ma, Hai-Xia Tian, Pan-Pan Li, Xue-Kun Li, Dong Zhu, Yong-Hong Li, Wen-Hong
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Snippet	The asphaltene from low-temperature coal tar (LTCT) derived from Shanbei has been characterized through combination of conventional techniques, such as...
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SubjectTerms	Aliphatic compounds Aromatic compounds Asphaltene Asphaltenes Asphalts Characterization Coal tar Constituents Crude oil Fourier transform infrared spectroscopy Low-temperature coal tar Molecular weight nuclear magnetic resonance spectroscopy oxygen petroleum Structure X-ray photoelectron spectroscopy
Title	Characterization of asphaltene isolated from low-temperature coal tar
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