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.
| 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 |
| Google Analytic Metrics | Metrics page |