Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula
The cross-polarized magic-angle-spinning NMR (CPMAS-NMR) technique was used in this work to assess the carbon distribution in coals of different rank (peat, lignite, xylite, sub-bituminous coal) from important deposits in Greece and Bulgaria. The technique is assumed to be only semiquantitative, due...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2003-09-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.shd.org.yu/HtDocs/SHD/Vol68/No8-9/V68-No8_9-01.pdf |
| _version_ | 1818140692176699392 |
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| author | ANDREAS GEORGAKOPOULOS |
| author_facet | ANDREAS GEORGAKOPOULOS |
| author_sort | ANDREAS GEORGAKOPOULOS |
| collection | DOAJ |
| description | The cross-polarized magic-angle-spinning NMR (CPMAS-NMR) technique was used in this work to assess the carbon distribution in coals of different rank (peat, lignite, xylite, sub-bituminous coal) from important deposits in Greece and Bulgaria. The technique is assumed to be only semiquantitative, due to a number of interferences, such as spinning side bands (SSB) in the spectra, paramagnetic species in the samples, and low or remote protonation of aromatic carbons. The Bulgarian sub-bituminous coal shows the greatest amounts of aromatic structures. The lignite sample from the Drama basin, Northern Greece, is relatively unaltered and largely unweathered, and shows the greatest amounts of aliphatic groups. The 13C-NMR spectra of Pliocene lignites from endemic areas in Serbia and Montenegro and Bosnia, taken from published papers, show significantly more intense resonances for methoxyl, phenolic, and polysaccharide moieties compared to the Drama lignite NMR spectrum. Xylite reveals high contents of carbohydrates. |
| first_indexed | 2024-12-11T10:48:01Z |
| format | Article |
| id | doaj.art-224bed66206643c4a187cddeddc4f722 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-11T10:48:01Z |
| publishDate | 2003-09-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-224bed66206643c4a187cddeddc4f7222022-12-22T01:10:25ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392003-09-01688-9599605Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsulaANDREAS GEORGAKOPOULOSThe cross-polarized magic-angle-spinning NMR (CPMAS-NMR) technique was used in this work to assess the carbon distribution in coals of different rank (peat, lignite, xylite, sub-bituminous coal) from important deposits in Greece and Bulgaria. The technique is assumed to be only semiquantitative, due to a number of interferences, such as spinning side bands (SSB) in the spectra, paramagnetic species in the samples, and low or remote protonation of aromatic carbons. The Bulgarian sub-bituminous coal shows the greatest amounts of aromatic structures. The lignite sample from the Drama basin, Northern Greece, is relatively unaltered and largely unweathered, and shows the greatest amounts of aliphatic groups. The 13C-NMR spectra of Pliocene lignites from endemic areas in Serbia and Montenegro and Bosnia, taken from published papers, show significantly more intense resonances for methoxyl, phenolic, and polysaccharide moieties compared to the Drama lignite NMR spectrum. Xylite reveals high contents of carbohydrates.http://www.shd.org.yu/HtDocs/SHD/Vol68/No8-9/V68-No8_9-01.pdfBalkan endemic nephropathy13C CPMAS-NMRGreecelignitepeatsub-bituminous coalxylite |
| spellingShingle | ANDREAS GEORGAKOPOULOS Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula Journal of the Serbian Chemical Society Balkan endemic nephropathy 13C CPMAS-NMR Greece lignite peat sub-bituminous coal xylite |
| title | Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula |
| title_full | Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula |
| title_fullStr | Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula |
| title_full_unstemmed | Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula |
| title_short | Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula |
| title_sort | aspects of solid state 13c cpmas nmr spectroscopy in coals from the balkan peninsula |
| topic | Balkan endemic nephropathy 13C CPMAS-NMR Greece lignite peat sub-bituminous coal xylite |
| url | http://www.shd.org.yu/HtDocs/SHD/Vol68/No8-9/V68-No8_9-01.pdf |
| work_keys_str_mv | AT andreasgeorgakopoulos aspectsofsolidstate13ccpmasnmrspectroscopyincoalsfromthebalkanpeninsula |