Carbon and Hydrogen Isotopes of Gaseous Products from Coal Maceral in Simulation Experiments
Received date: 2009-09-28
Revised date: 2009-12-21
Online published: 2010-04-10
Carbon and hydrogen isotope is an important tool for gas geochemistry. In this paper, carbon and hydrogen isotopes of gas products from vitrinite and fusinite isolated from lignite coal in Shenshan were measured. The result showed that δ13C values of methane and its homologues in gaseous products have a similar tendency of carbon isotope of alkane gases in natural gas at the same temperature, in which δ13C values become heavier with carbon number, i.e. δ13C1＜δ13C2＜δ13C3. Meanwhile, δ13C values of methane and its homologue (δ13C1, δ13C2, δ13C3) in gaseous products become heavier with increase of simulation temperature. In addition, δD values in gaseous products generated from vitrinite and fusinite has a serial of δDH2<δD1<δD2<δD3<δD4 at the same temperature, and the same change of δD values in gaseous products is observed with increasing ,temperature, i.e. δDH2, δD1, δD2, δD3, δD4
WANG Xiao-Yu, MA Su-Ping, QIU Jun-Li, LEI Tian-Zhu, XIA Yan-Qing . Carbon and Hydrogen Isotopes of Gaseous Products from Coal Maceral in Simulation Experiments[J]. Natural Gas Geoscience, 2010 , 21(2) : 338 -344 . DOI: 10.11764/j.issn.1672-1926.2010.02.338
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