Isotopically exchangeable organic hydrogen in coal relates to thermal maturity and maceral composition
Organic Geochemistry
By: Maria Mastalerz and A. Schimmelmann
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Abstract
Hydrogen isotopic exchangeability (Hex) and ??Dn values of non-exchangeable organic hydrogen were investigated in coal kerogens ranging in rank from lignite to graphite. The relative abundance of Hex is highest in lignite with about 18% of total hydrogen being exchangeable, and decreases to around 2.5% in coals with Ro of 1.7 to ca. 5.7%. At Still higher rank (Ro > 6%), Hex increases slightly, although the abundance of total hydrogen decreases. ??Dn is influenced by original biochemical D/H ratios and by thermal maturation in contact with water. Therefore, ??Dn does not show an overall consistent trend with maturity. ?? 2002 Elsevier Science Ltd. All rights reserved.
Suggested Citation
Mastalerz, M., Schimmelmann, A., 2002, Isotopically exchangeable organic hydrogen in coal relates to thermal maturity and maceral composition: Organic Geochemistry, v. 33, no. 8, p. 921-931, https://doi.org/10.1016/S0146-6380(02)00064-5.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Isotopically exchangeable organic hydrogen in coal relates to thermal maturity and maceral composition |
| Series title | Organic Geochemistry |
| DOI | 10.1016/S0146-6380(02)00064-5 |
| Volume | 33 |
| Issue | 8 |
| Year Published | 2002 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Organic Geochemistry |
| First page | 921 |
| Last page | 931 |