Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal
An Oligocene lignite (Ebro Basin, Spain) and its density fractions were analyzed petrographically and with microscale techniques (electron microprobe and micro-FTIR) to gain insight into differences between individual macerals of low rank high-sulfur coal. The density of the alginite-dominated frac...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universitat de Barcelona (UB), Geociències Barcelona (Geo3BCN), Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDAEA), Universitat Autònoma de Barcelona (UAB)
2013-12-01
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| Series: | Geologica Acta |
| Subjects: | |
| Online Access: | https://revistes.ub.edu/index.php/GEOACTA/article/view/8145 |
| _version_ | 1797654678472753152 |
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| author | M. MASTALERZ J.C. HOWER D.N. TAULBEE |
| author_facet | M. MASTALERZ J.C. HOWER D.N. TAULBEE |
| author_sort | M. MASTALERZ |
| collection | DOAJ |
| description |
An Oligocene lignite (Ebro Basin, Spain) and its density fractions were analyzed petrographically and with microscale techniques (electron microprobe and micro-FTIR) to gain insight into differences between individual macerals of low rank high-sulfur coal. The density of the alginite-dominated fraction is below 1.26g/cm3, and that of the huminite-dominated fraction is above 1.38g/cm3. Densities within 1.26-1.38g/cm3 represent mixtures of liptinite and huminite macerals. With regard to elemental composition, alginite has the highest carbon content (75.6% on average) and the lowest oxygen content (6.1% on average). Corpohuminite is characterized by the lowest carbon content (62.3% on average) and the highest oxygen content (21.5% on average). Nitrogen contents for corpohuminite and ulminite (~1%) are similar, but are signifi cantly lower in alginite (0.2% on average). Sulfur content is highest in alginite (13.4% on average), followed by corpohuminite (9.8%) and ulminite (7.7%). Functional group analysis documents large differences between macerals of the huminite and liptinite group, but also indicates differences between individual macerals within both the huminite and liptinite group. These differences are most notable in aromaticity, degree of aromatic ring condensations, and hydrocarbon potential.
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| first_indexed | 2024-03-11T17:03:00Z |
| format | Article |
| id | doaj.art-207d847a989242e2a9250d388ee506b8 |
| institution | Directory Open Access Journal |
| issn | 1696-5728 |
| language | English |
| last_indexed | 2024-03-11T17:03:00Z |
| publishDate | 2013-12-01 |
| publisher | Universitat de Barcelona (UB), Geociències Barcelona (Geo3BCN), Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDAEA), Universitat Autònoma de Barcelona (UAB) |
| record_format | Article |
| series | Geologica Acta |
| spelling | doaj.art-207d847a989242e2a9250d388ee506b82023-10-20T07:05:34ZengUniversitat de Barcelona (UB), Geociències Barcelona (Geo3BCN), Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDAEA), Universitat Autònoma de Barcelona (UAB)Geologica Acta1696-57282013-12-01114Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coalM. MASTALERZ0J.C. HOWER1D.N. TAULBEE2Indiana Geological Survey, Indiana University611 North Walnut Grove Ave., Bloomington, Indiana, 47405-2208, United States. Phone: 1-812-855-9416.University of Kentucky Center for Applied Energy Research 2540 Research Park Drive, Lexington, Kentucky 40511, United States.University of Kentucky Center for Applied Energy Research 2540 Research Park Drive, Lexington, Kentucky 40511, United States. An Oligocene lignite (Ebro Basin, Spain) and its density fractions were analyzed petrographically and with microscale techniques (electron microprobe and micro-FTIR) to gain insight into differences between individual macerals of low rank high-sulfur coal. The density of the alginite-dominated fraction is below 1.26g/cm3, and that of the huminite-dominated fraction is above 1.38g/cm3. Densities within 1.26-1.38g/cm3 represent mixtures of liptinite and huminite macerals. With regard to elemental composition, alginite has the highest carbon content (75.6% on average) and the lowest oxygen content (6.1% on average). Corpohuminite is characterized by the lowest carbon content (62.3% on average) and the highest oxygen content (21.5% on average). Nitrogen contents for corpohuminite and ulminite (~1%) are similar, but are signifi cantly lower in alginite (0.2% on average). Sulfur content is highest in alginite (13.4% on average), followed by corpohuminite (9.8%) and ulminite (7.7%). Functional group analysis documents large differences between macerals of the huminite and liptinite group, but also indicates differences between individual macerals within both the huminite and liptinite group. These differences are most notable in aromaticity, degree of aromatic ring condensations, and hydrocarbon potential. https://revistes.ub.edu/index.php/GEOACTA/article/view/8145Lignite. Macerals. Elemental composition. Functional groups. |
| spellingShingle | M. MASTALERZ J.C. HOWER D.N. TAULBEE Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal Geologica Acta Lignite. Macerals. Elemental composition. Functional groups. |
| title | Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal |
| title_full | Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal |
| title_fullStr | Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal |
| title_full_unstemmed | Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal |
| title_short | Variations in chemistry of macerals as refl ected by micro-scale analysis of a Spanish coal |
| title_sort | variations in chemistry of macerals as refl ected by micro scale analysis of a spanish coal |
| topic | Lignite. Macerals. Elemental composition. Functional groups. |
| url | https://revistes.ub.edu/index.php/GEOACTA/article/view/8145 |
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