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Mapping the chemistry of resinite, funginite and associated vitrinite in coal with micro-FTIR.

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Title: Mapping the chemistry of resinite, funginite and associated vitrinite in coal with micro-FTIR.
Authors: CHEN, Y.1, CARO, L.D.2, MASTALERZ, M.3, SCHIMMELMANN, A.1, BLANDÓN, A.2
Source: Journal of Microscopy. Jan2013, Vol. 249 Issue 1, p69-81. 13p.
Subjects: Resinite, Vitrinite, Fourier transform infrared spectroscopy, High resolution imaging, Bituminous coal, Hydrocarbons, Comparative studies
Abstract: Micro-FTIR mapping is a powerful tool for nondestructive, in situ chemical characterization of coal macerals at high resolution. In this study, the chemistry of resinite, funginite and associated vitrinite is characterized via reflectance micro-FTIR for Cenozoic high volatile C bituminous coals from Colombia. In comparison with the micro-FTIR spectra of vitrinite and inertinite, the corresponding spectra of liptinite macerals in the same coals are characterized by stronger aliphatic CH x absorbance at 3000-2800 and 1460-1450 cm−1, but less intense aromatic C=C ring stretching vibration and aromatic CH x out-of-plane deformation at 700-900 cm−1. The aliphatic components in resinite have the longest carbon chains and are least branched, bestowing the highest hydrocarbon generation potential on resinite among the three macerals studied. In contrast, funginite exhibits the strongest aromatic character, the highest aromaticity, the lowest 'A' factor values and the lowest C=O/C=C ratios among the three maceral groups. Vitrinite generally displays intermediate chemical characteristics. Reflectance micro-FTIR mapping of coal samples further confirms the aliphatic character of resinite and the aromatic nature of funginite. In addition, chemical mapping of resinite and adjacent vitrinite shows that vitrinite immediately adjacent to resinite displays higher aliphatic CH x stretching intensity than more distant vitrinite, suggesting that chemical components from resinite can diffuse over short distances into adjacent vitrinite, specifically causing hydrogen enrichment. It needs to be pointed out, however, that the region of influence is localized and limited to a narrow zone, whose extent likely depends on resinite's properties, such as its size and aliphatic material content. This way, the chemical map of resinite and associated vitrinite provides direct evidence of the intermaceral effects occurring during the peat forming stage or during later coalification. No influence of funginite (primarily fungal spores and sclerotia) on the chemistry of adjacent vitrinite has been demonstrated, which is likely due to the highly aromatic structure of this type of funginite. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Mapping the chemistry of resinite, funginite and associated vitrinite in coal with micro-FTIR.
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  Data: <searchLink fieldCode="AR" term="%22CHEN%2C+Y%2E%22">CHEN, Y.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22CARO%2C+L%2ED%2E%22">CARO, L.D.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22MASTALERZ%2C+M%2E%22">MASTALERZ, M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22SCHIMMELMANN%2C+A%2E%22">SCHIMMELMANN, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22BLANDÓN%2C+A%2E%22">BLANDÓN, A.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Microscopy%22">Journal of Microscopy</searchLink>. Jan2013, Vol. 249 Issue 1, p69-81. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Resinite%22">Resinite</searchLink><br /><searchLink fieldCode="DE" term="%22Vitrinite%22">Vitrinite</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transform+infrared+spectroscopy%22">Fourier transform infrared spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22High+resolution+imaging%22">High resolution imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Bituminous+coal%22">Bituminous coal</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrocarbons%22">Hydrocarbons</searchLink><br /><searchLink fieldCode="DE" term="%22Comparative+studies%22">Comparative studies</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Micro-FTIR mapping is a powerful tool for nondestructive, in situ chemical characterization of coal macerals at high resolution. In this study, the chemistry of resinite, funginite and associated vitrinite is characterized via reflectance micro-FTIR for Cenozoic high volatile C bituminous coals from Colombia. In comparison with the micro-FTIR spectra of vitrinite and inertinite, the corresponding spectra of liptinite macerals in the same coals are characterized by stronger aliphatic CH x absorbance at 3000-2800 and 1460-1450 cm−1, but less intense aromatic C=C ring stretching vibration and aromatic CH x out-of-plane deformation at 700-900 cm−1. The aliphatic components in resinite have the longest carbon chains and are least branched, bestowing the highest hydrocarbon generation potential on resinite among the three macerals studied. In contrast, funginite exhibits the strongest aromatic character, the highest aromaticity, the lowest 'A' factor values and the lowest C=O/C=C ratios among the three maceral groups. Vitrinite generally displays intermediate chemical characteristics. Reflectance micro-FTIR mapping of coal samples further confirms the aliphatic character of resinite and the aromatic nature of funginite. In addition, chemical mapping of resinite and adjacent vitrinite shows that vitrinite immediately adjacent to resinite displays higher aliphatic CH x stretching intensity than more distant vitrinite, suggesting that chemical components from resinite can diffuse over short distances into adjacent vitrinite, specifically causing hydrogen enrichment. It needs to be pointed out, however, that the region of influence is localized and limited to a narrow zone, whose extent likely depends on resinite's properties, such as its size and aliphatic material content. This way, the chemical map of resinite and associated vitrinite provides direct evidence of the intermaceral effects occurring during the peat forming stage or during later coalification. No influence of funginite (primarily fungal spores and sclerotia) on the chemistry of adjacent vitrinite has been demonstrated, which is likely due to the highly aromatic structure of this type of funginite. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Microscopy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1111/j.1365-2818.2012.03685.x
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 13
        StartPage: 69
    Subjects:
      – SubjectFull: Resinite
        Type: general
      – SubjectFull: Vitrinite
        Type: general
      – SubjectFull: Fourier transform infrared spectroscopy
        Type: general
      – SubjectFull: High resolution imaging
        Type: general
      – SubjectFull: Bituminous coal
        Type: general
      – SubjectFull: Hydrocarbons
        Type: general
      – SubjectFull: Comparative studies
        Type: general
    Titles:
      – TitleFull: Mapping the chemistry of resinite, funginite and associated vitrinite in coal with micro-FTIR.
        Type: main
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            NameFull: CHEN, Y.
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            NameFull: CARO, L.D.
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            NameFull: MASTALERZ, M.
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            NameFull: SCHIMMELMANN, A.
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            NameFull: BLANDÓN, A.
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              M: 01
              Text: Jan2013
              Type: published
              Y: 2013
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              Value: 249
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