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- W4361279440 abstract "Abstract. To explore the effect of various solvents extraction on the chemical property of shales, several lacustrine shales from Chang 7 member of the Upper Triassic Yanchang Formation, Ordos Basin with maturities from marginally mature (Tmax = 439 ℃) to late mature (Tmax = 456 ℃) were extracted by using acetone, tetrahydrofuran (THF), carbon disulfide (CS2), and benzene, respectively. Fourier transform infrared spectroscopy (FTIR) was employed to examine the functional groups of the samples before and after extraction with different solvents. The results showed that the extraction yield from shale with THF is significantly higher than that of other solvents, which may be related to the properties of the THF, including the aromatic structure, high boiling point, excellent Hansen solubility parameters, and strong polarity. The TOC-normalized yield of the mature sample J1 is significantly higher than that of other samples, which may be related to that the J1 sample is at the peak of hydrocarbon generation, thus a large number of kerogens were cracked into oil and bitumen. The aromaticity of organic matter (OM) increases with the increase of maturity. The length of the aliphatic chains of the organic matter first increased with the increase of maturity before late maturity stage, and then decreased in late maturity stage. The extraction of shales with solvents hardly changes the length of aliphatic chains. Higher aromaticity is observed in shale residues after THF extractions than other solvents (i.e., acetone, CS2, benzene)." @default.
- W4361279440 created "2023-03-31" @default.
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- W4361279440 date "2023-03-30" @default.
- W4361279440 modified "2023-09-29" @default.
- W4361279440 title "The influence of various solvents extraction on chemical properties on Chang 7 shale, Ordos Basin, China" @default.
- W4361279440 doi "https://doi.org/10.5194/egusphere-2023-272" @default.
- W4361279440 hasPublicationYear "2023" @default.
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