Rapid offline isotopic characterisation of hydrocarbon gases generated by micro-scale sealed vessel pyrolysis

Ladjavardi, Mojgan; Berwick, Lyndon; Grice, Kliti; Boreham, Chris; Horsfield, Brian

doi:10.1016/j.orggeochem.2013.03.003

Cited by 7 publications

(2 citation statements)

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“…Its main operational advantages are high precision and reproducibility, combined with milligram sample loading and batch processing capabilities, all conducted at low cost . While some offline studies have been undertaken, for example, concerning the carbon isotopic compositions of pyrolysates, it is online MSSV analysis that has been most frequently used, with a wide range of applications in kinetic modeling, isotopic investigations, and reservoir geochemistry studies. − Pyrolysis products occurring in high yield, such as n -alkanes, aromatic hydrocarbons, and thiophenes, have been the main focus of attention.…”

Section: Introductionmentioning

confidence: 99%

Release of Bound Biomarkers Using Microscale Sealed Vessel Catalytic Hydrogenation

Yang

Horsfield²,

Karger

et al. 2021

Energy Fuels

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The covalently bound biomarkers in the macrostructure of kerogen or asphaltene can provide unique information compared with the routinely extractable biomarkers. Here, a shale sample (immature Posidonia Shale) and an oil sample (Norwegian Geochemical Standard NSO-1) were systematically investigated by heating them to different temperatures and by mixing them with different catalytic materials to optimize the microscale sealed vessel catalytic hydrogenation (MSSV-Hy) protocol. It can be demonstrated that (1) tetralin acts as an effective hydrogen donor to stabilize the generated free radicals in the pyrolysis system enabling the bound biomarkers to resemble more closely their free counterparts, (2) PtO2 is the most appropriate catalyst for promoting the overall release of bound biomarkers, and (3) 390 °C is the best end temperature (from 200 °C at 0.7 °C/min) for the MSSV-Hy approach, balancing between bound biomarker yields and the protection of the original biomarker steric configurations. MSSV-Hy is a quick, highly reproducible, less sample demanding, and cost-effective method to release bound biomarkers and has great potential for studying the carbon cycle in its broadest sense.

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Section: Introductionmentioning

confidence: 99%

Release of Bound Biomarkers Using Microscale Sealed Vessel Catalytic Hydrogenation

Yang

Horsfield²,

Karger

et al. 2021

Energy Fuels

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“…MSSVpy has been widely applied to simulate the catagenetic reactions of hydrocarbons and study the kinetics of petroleum generation (e.g. Horsfield et al, 1989;Schenk and Horsfield, 1993;Ladjavardi et al, 2013), as well as to characterise naturally occurring OM (Greenwood et al, 2006;Berwick et al, 2010;Lockhart et al, 2013) and investigate the formation of specific organic products during diagenesis (Sinninghe Damsté et al, 1998). Another common technique for the artificial maturation of OM is hydrous pyrolysis, in which crushed or powdered rock is heated with water in sealed vessels (Lewan et al, 1979).…”

Section: Introductionmentioning

confidence: 99%

Effects of sulfide minerals on aromatic maturity parameters: Laboratory investigation using micro-scale sealed vessel pyrolysis

Holman

Greenwood

Brocks

et al. 2014

Organic Geochemistry

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a b s t r a c tSedimentary organic matter from the Here's Your Chance (HYC) Pb-Zn-Ag deposit (McArthur Basin, Northern Territory, Australia) displays increased thermal maturity compared to nearby non-mineralised sediments. Micro-scale sealed vessel pyrolysis (MSSVpy) of an immature, organic rich sediment from the host Barney Creek Formation (BCF) was used to simulate the thermal maturation of OM from the HYC deposit, and to assess the effect of sulfide minerals on organic maturation processes. MSSVpy at increasing temperatures (300, 330 and 360°C) resulted in increased methylphenanthrene maturity ratios which were within the range reported for bitumen extracted from HYC sediments. The methylphenanthrene index ratio from MSSVpy of the BCF sample was lower than in HYC, due to a reduced proportion of methylated phenanthrenes. Polycyclic aromatic hydrocarbons with four to six rings were produced in increasing abundance as pyrolysis temperature increased, although they did not approach the levels reported from HYC. Addition of lead sulfide, zinc sulfide and pyrite to the MSSVpy experiments resulted in a reduced response of the methylphenanthrene maturity parameters, possibly due to retardation of methyl-shift and transmethylation reactions.

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Development of new method of δ13C measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry

Wang

et al. 2014

Journal of Chromatography A

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Rapid offline isotopic characterisation of hydrocarbon gases generated by micro-scale sealed vessel pyrolysis

Abstract: Please cite this article as: Ladjavardi, M., Berwick, L.J., Grice, K., Boreham, C.J., Horsfield, B., Rapid offline isotopic characterisation of hydrocarbon gases generated by micro scale sealed vessel pyrolysis, Organic Geochemistry (2013), doi: http://dx

Cited by 7 publications

References 7 publications

Release of Bound Biomarkers Using Microscale Sealed Vessel Catalytic Hydrogenation

Release of Bound Biomarkers Using Microscale Sealed Vessel Catalytic Hydrogenation

Effects of sulfide minerals on aromatic maturity parameters: Laboratory investigation using micro-scale sealed vessel pyrolysis

Development of new method of δ13C measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry

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