Significance of Isotopically Labile Organic Hydrogen in Thermal Maturation of Organic Matter

Schimmelmann, Arndt ; Mastalerz, Maria

Indiana University

关键词: 08 Hydrogen;    Isotopic Exchange;    02 Petroleum;    Chemical Reactions;    Sulfur Hydrogen Stable Isotopes, Coal, Kerogen, Oil, Bitumen, Natural Gas, Maturation;   

DOI  :  10.2172/974200
RP-ID  :  Final Report
RP-ID  :  FG02-00ER15032
RP-ID  :  974200

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.