Evolution of aromatic structure and nanopores in shale kerogen by using in-situ HRTEM and in-situ FT-IR experiment
文献类型：期刊论文
| 作者 | Su, Chi1,3; Liu, Yu4; Yang, Yueheng1,3; Gao, Tengwei4; Qi, Tianyang4; Wang, Yang2 |
| 刊名 | FUEL
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 359页码:13 |
| 关键词 | In-situ HRTEM Kerogen Molecular structure Aromatic clusters Nanopores |
| ISSN号 | 0016-2361 |
| DOI | 10.1016/j.fuel.2023.130479 |
| 英文摘要 | The evolution of kerogen molecular structure and nanopores plays critical roles in oil/gas generation and storage of shale gas. However, due to the heterogeneity and complexity of the kerogen molecule and nanopores, the precise process and evolution mechanism of kerogen molecule and nanopores remain obscure. In this study, insitu Transmission Electron Microscope (TEM) was introduced to directly observe the evolution process of kerogen aromatic fringes and nanopores. Besides, nuclear magnetic resonance (NMR) spectroscopy and in-situ Fourier Transform Infrared (FT-IR) spectroscopy were also used to help analyze the evolution mechanism of kerogen aromatic structures. The results show that with the heating temperature increasing from 150 degrees C to 900 degrees C, the kerogen aromatic structure undergoes a three-stage evolution. In stage I (from 150 degrees C to 300 degrees C), the small sized aromatic clusters (naphthalene and 2 x 2 rings) drop off from the kerogen molecules and transform into the oil component. Their proportions in total kerogen aromatic rings decrease significantly from 49 % to 27 %. In stage II (from 300 degrees C to 700 degrees C), the aliphatic structures are converted to small sized aromatic clusters through aromatization, and the proportion of small sized aromatic clusters increases from 27 % to 38 %. In stage III, aromatic clusters undergo interconnection, resulting in the formation of significantly larger aromatic rings. During this stage, the proportion of large sized aromatic clusters increases obviously from 8 % to 42 %. Based on the in-situ HRTEM images, 2-15 nm pores were also identified. Throughout the heating process, the nanopore area within the kerogen particle (1956 nm2) exhibits an initial increase from 170 nm2 to 377 nm2 (150 degrees C-600 degrees C). Subsequently, the nanopore area experiences a decrease from 377 nm2 to 140 nm2 (600 degrees C-900 degrees C). By utilizing the benefits of in-situ HRTEM, the evolution of kerogen molecules and nanopores were elucidated in detail, aiding in the comprehension of the oil/gas generation and shale gas storage. |
| WOS关键词 | ORGANIC-MATTER ; PORE STRUCTURE ; BITUMINOUS COALS ; HEAT-TREATMENT ; CARBON ; PYROLYSIS ; OIL ; TRANSFORMATIONS ; SPECTROSCOPY ; INSIGHTS |
| 资助项目 | National Natural Science Foundation of China[42172156] ; National Natural Science Foundation of China[42102225] ; Fundamental Research Funds for the Central Universities[2023ZKPYDC07] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001129871000001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111681]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Liu, Yu |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.China Univ Min & Technol, Key Lab Coalbed Methane Resources & Reservoir Form, Minist Educ, Xuzhou 221008, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.China Univ Min & Technol, Coll Geosci & Survey Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Chi,Liu, Yu,Yang, Yueheng,et al. Evolution of aromatic structure and nanopores in shale kerogen by using in-situ HRTEM and in-situ FT-IR experiment[J]. FUEL,2024,359:13. |
| APA | Su, Chi,Liu, Yu,Yang, Yueheng,Gao, Tengwei,Qi, Tianyang,&Wang, Yang.(2024).Evolution of aromatic structure and nanopores in shale kerogen by using in-situ HRTEM and in-situ FT-IR experiment.FUEL,359,13. |
| MLA | Su, Chi,et al."Evolution of aromatic structure and nanopores in shale kerogen by using in-situ HRTEM and in-situ FT-IR experiment".FUEL 359(2024):13. |
入库方式： OAI收割
来源：地质与地球物理研究所
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