Porphyrin protonation induces decoupling of trace metals in petroleum
文献类型：期刊论文
| 作者 | Zhang, Jingkun1; Cao, Jian2; He, Wenjun3 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 198页码:11 |
| 关键词 | Organic-inorganic interaction Hydrocarbon reservoir geochemistry Oil source tracing Calcite cement Junggar Basin |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104878 |
| 通讯作者 | Zhang, Jingkun(jkzhang@nigpas.ac.cn) |
| 英文摘要 | The mechanism of migration of trace metals in petroleum systems is poorly understood, which limits our understanding of organic-inorganic interactions and their application in tracing oil sources. Based on a molecular model of metalloporphyrin, numerical simulations involving density functional theory have revealed that porphyrin protonation is associated with trace-metal decoupling in petroleum. Trace metals readily form covalent bonds with weakly protonated porphyrin N to form stable compounds. However, the metals may be decoupled at lower fluid pH owing to increased N protonation, which activates the formation of ionic bonds with O2- . The released metals may then be fixed in authigenic calcite cement (ACC) reservoirs through substitution of Ca. For Mg, Mn, and Fe, the decoupling order is Mg > Fe > Mn, whereas that for the substitution of Ca is Mn > Fe > Mg, reflecting the complexity of organic-inorganic interactions and indicating the potential application of metals in fingerprinting oil sources. This case study of the southern Junggar Basin, China, revealed that Mn, Fe, and Mg enrichment of ACC may provide indications of Paleozoic, Mesozoic, and Cenozoic petroleum systems, respectively, providing a potential new approach for the tracing of oil sources in petroleum basins. |
| WOS关键词 | ORGANIC-INORGANIC INTERACTIONS ; JUNGGAR BASIN ; MIGRATION ; CALCITE ; VANADIUM ; NICKEL ; PROXIES ; ORIGIN ; CHINA ; GAS |
| 资助项目 | National Natural Science Foundation of China[42102148] ; National Natural Science Foundation of China[42230808] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001356584700001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/44577]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Zhang, Jingkun |
| 作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China 3.PetroChina Xinjiang Oilfield Co, Res Inst Petr Explorat & Explorat, Karamay 834000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jingkun,Cao, Jian,He, Wenjun. Porphyrin protonation induces decoupling of trace metals in petroleum[J]. ORGANIC GEOCHEMISTRY,2024,198:11. |
| APA | Zhang, Jingkun,Cao, Jian,&He, Wenjun.(2024).Porphyrin protonation induces decoupling of trace metals in petroleum.ORGANIC GEOCHEMISTRY,198,11. |
| MLA | Zhang, Jingkun,et al."Porphyrin protonation induces decoupling of trace metals in petroleum".ORGANIC GEOCHEMISTRY 198(2024):11. |
入库方式： OAI收割
来源：南京地质古生物研究所
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