Significance of Isotopically Labile Organic Hydrogen in Thermal Maturation of Organic Matter [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 553 Economic geology
• Thông tin xuất bản: Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2010
• Mô tả vật lý: Size: pdf file, 17 pages
• Bộ sưu tập: Metadata
• ID: 268608
• Chủ đề: 1. 01 coal, lignite, and peat; 2. 02 petroleum; 3. 04 oil shales and tar sands; 4. 08 hydrogen; 5. 37 inorganic, organic, physical and analytical chemistry

Tóm tắt

Isotopically labile organic hydrogen in fossil fuels occupies chemical positions that participate in isotopic exchange and in chemical reactions during thermal maturation from kerogen to bitumen, oil and gas. Carbon-bound organic hydrogen is isotopically far less exchangeable than hydrogen bound to nitrogen, oxygen, or sulfur. We explore why organic hydrogen isotope ratios express a relationship with organic nitrogen isotope ratios in kerogen at low to moderate maturity. We develop and apply new techniques to utilize organic D/H ratios in organic matter fractions and on a molecular level as tools for exploration for fossil fuels and for paleoenvironmental research. The scope of our samples includes naturally and artificially matured substrates, such as coal, shale, oil and gas.