Kerogen of Toarcian shales of the Paris Basin. A study of its maturation by flash pyrolysis techniques
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Oil generation of lacustrine Type II shale: A case study of the Shahejie Formation, Laizhou Bay Sag, Bohai Bay Basin (China)
2020, Journal of Petroleum Science and EngineeringKinetics of oil generation from brackish-lacustrine source rocks in the southern Bohai Sea, East China
2020, Organic GeochemistryThe characteristics of free/bound biomarkers released from source rock shown by stepwise Py-GC-MS and thermogravimetric analysis (TGA/DTG)
2019, Journal of Petroleum Science and EngineeringCitation Excerpt :The advantage is that pyrolyzate can avoid the secondary cracking under high-temperature (Liao et al., 2015). More importantly, the method is characterized by releasing the bound biomarkers within the kerogen structure (Philp and Gilbert, 1987; Río et al., 1995). van Graas et al. (1981) conducted flash pyrolysis of asphaltenes and revealed that the distribution of biomarkers in the pyrolyzate was significantly different with the extractable lipids in the corresponding samples.
Effects of maturity on the pyrolytic fingerprint of coals from North Borneo
2017, International Journal of Coal GeologyCitation Excerpt :One such method uses pyrolytic cleavage of macromolecular materials into GC-amenable products, referred to as conventional analytical pyrolysis (Py-GC–MS) (Moldoveanu, 1998; Voorhees, 2013; Wampler, 2006). In the 1980s and 1990s, the potential of Py-GC–MS for coal characterization was extensively explored and deepened our understanding of the kerogen structure and its relation to depositional environment and coal rank (Almendros et al., 1998; Carlsen and Christiansen, 1995; Christiansen et al., 1995; Del Río and Hatcher, 1998; Goossens et al., 1988; Han and Kruge, 1999; Hartgers et al., 1994; Hatcher and Clifford, 1997; Hatcher et al., 1992; Hoefs et al., 1998; Kralert et al., 1995; Larter, 1984; Larter et al., 1978; Meuzelaar et al., 1984; Nip et al., 1988; Sinninghe Damsté et al., 1989, 1992; Stankiewicz et al., 1996; Van Aarssen et al., 1994; Van de Meent et al., 1980; Van Graas et al., 1981). Even though Py-GC–MS is limited with regard to absolute quantitation and may lead to undesired side-reactions and substrate-dependent reactions (Saiz-Jimenez, 1994), its fingerprinting value provided by the release of numerous structurally diagnostic products makes pyrolysis a rapid screening tool for coal chemistry.
Stepwise pyrolysis of the kerogen from the Huadian oil shale, NE China: Algaenan-derived hydrocarbons and mid-chain ketones
2016, Organic GeochemistryCitation Excerpt :The low abundance of prist-1-ene in subsequent pyrolyzates suggests that only a limited number of precursors are involved. Prist-1-ene is often the main isoprenoid hydrocarbon found in pyrolyzates from immature kerogens, together with much smaller quantities of prist-2-ene (van Graas et al., 1981; Höld et al., 2001). Note that prist-1-ene is a relatively minor constituent in flash pyrolyzates of the Huadian shale at 650 °C (Zhang et al., 2014b), because it breaks down into small molecules at high temperature, or can be masked by the much higher contents of n-alkanes and n-alkenes produced from kerogen breakdown at higher pyrolysis temperatures.
Flash pyrolysis of kerogens from algal rich oil shales from the Eocene Huadian Formation, NE China
2014, Organic Geochemistry