Elucidating the formation pathway of photo-generated asphaltenes from light Louisiana sweet crude oil after exposure to natural sunlight in the Gulf of Mexico

Qing Wang,Burke Leonce,Meredith Evans Seeley, Nathaniel F. Adegboyega,Kaijun Lu,William C. Hockaday,Zhanfei Liu

Organic Geochemistry（2020）

引用 10|浏览5

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摘要

•Light Louisiana sweet crude oil was photooxidized for 44 d with natural sunlight.•SARA fractions of weathered oil were analyzed by pyrolysis GC–MS and NMR.•Photo-generated asphaltenes were mainly sourced from the aromatic fraction.•Photo-generated asphaltenes had small aromatic cores and long alkyl tails.•Intact n-alkanes were occluded into native and photo-generated asphaltenes.

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关键词

Deepwater Horizon oil spill,Pyrolysis GC–MS,Solid state NMR,Photooxidation,Crude oil,Asphaltene,SARA,Aromatic hydrocarbons,Louisiana sweet,Gulf of Mexico

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