Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
| Fang, Peng1,2; Hong, Zhibin1; Wu, Jia1,2; Wang, Yuan3; Liu, Keyu4; Zhou, Minghui5 | |
| The influence of asphaltene matrix on the thermal evolution of polycyclic aromatic hydrocarbons: Experimental evidence and geochemical implications | |
| Source Publication | JOURNAL OF ASIAN EARTH SCIENCES
 |
| ISSN | 1367-9120 |
| 2024 | |
| Volume | 259Pages:15 |
| DOI | 10.1016/j.jseaes.2023.105927 |
| Language | 英语 |
| WOS Research Area | Geology |
| Abstract | The thermal evolution of components trapped in matrix of asphaltenes is supposed to be retarded, as compared to the free ones. Studying the geochemical evolution of trapped polycyclic aromatic hydrocarbons (PAHs) may provide insight for the characterization of high-maturity organic matter. The discrepancies in the thermal evolution between free and trapped (asphaltene-adsorbed/occluded) PAHs (phenanthrene, chrysene, pyrene, and their methylated isomers) were studied by thermal maturation (gold tubes, 300 similar to 400 degrees C) experiments on a low-maturity solid bitumen from the Sichuan Basin, southwestern China. The results show that the thermal evolution of asphaltene-adsorbed PAHs is retarded compared to that of free ones. This is attributed to slight differences in reaction kinetics due to steric hindrance by the asphaltene structure. The asphaltene matrix appears to act as a reaction inhibitor leading to a retardation of the thermal evolution of the methylphenanthrene index (MPI) in asphaltene-adsorbed hydrocarbons. This could provide a possibility for maturity assessment of high-maturity organic matter. The thermal evolution of asphaltene-occluded PAHs in the experiments resulted in thermodynamically controlled isomer distributions of occluded methylphenanthrenes and methylchrysenes. However, the occluded methylpyrene isomers were hardly affected by thermal stress. They probably retained their original distributions and may serve as source indicators. |
| Keyword | Asphaltenes Adsorbed/Occluded hydrocarbons Polycyclic aromatic hydrocarbons Thermal evolution Maturity |
| WOS ID | WOS:001122189400001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/75965 |
| Collection | 有机地球化学国家重点实验室 |
| Corresponding Author | Fang, Peng; Wu, Jia |
| Affiliation | 1.China Univ Petr, Natl Key Lab Petr Resources & Engn, Beijing 102249, Peoples R China 2.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.SINOPEC, Wuxi Res Inst Petr Geol, Petr Explorat & Prod Res Inst, Wuxi 214216, Jiangsu, Peoples R China 4.China Univ Petr East China, Sch Geosci, Qingdao 266580, Shandong, Peoples R China 5.PetroChina, State Key Lab Enhanced Oil Recovery, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China |
| Recommended Citation GB/T 7714 | Fang, Peng,Hong, Zhibin,Wu, Jia,et al. The influence of asphaltene matrix on the thermal evolution of polycyclic aromatic hydrocarbons: Experimental evidence and geochemical implications[J]. JOURNAL OF ASIAN EARTH SCIENCES,2024,259:15. |
| APA | Fang, Peng,Hong, Zhibin,Wu, Jia,Wang, Yuan,Liu, Keyu,&Zhou, Minghui.(2024).The influence of asphaltene matrix on the thermal evolution of polycyclic aromatic hydrocarbons: Experimental evidence and geochemical implications.JOURNAL OF ASIAN EARTH SCIENCES,259,15. |
| MLA | Fang, Peng,et al."The influence of asphaltene matrix on the thermal evolution of polycyclic aromatic hydrocarbons: Experimental evidence and geochemical implications".JOURNAL OF ASIAN EARTH SCIENCES 259(2024):15. |
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