Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Reactivity and structural changes of asphaltene during the supercritical water upgrading process | |
Li, Ning1,2,3; Zhang, Xinghua1,2 ; Zhang, Qi1,2; Chen, Lungang1,2; Ma, Longlong1,2; Xiao, Xianming3
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| 2020-10-15 | |
| Source Publication | FUEL
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| ISSN | 0016-2361 |
| Volume | 278Pages:9 |
| Corresponding Author | Zhang, Xinghua(zhangxh@ms.giec.ac.cn) ; Ma, Longlong(mall@ms.giec.ac.cn) |
| Abstract | Experiments on the reactivity and structural changes of asphaltene in the SCW upgrading process were conducted with a batch reactor. The reactivity and structural changes of asphaltene was evaluated with the yield of products (gas, maltene and coke) and the characterizations of remaining asphaltene with elemental analysis (C, H, N, and S), gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR) H-1 and nuclear magnetic resonance (H-1 NMR). As shown from the transformation of asphaltene, the enhance of severity condition would increase the conversion of asphaltene but resulted in the secondary reaction of maltene and the formation of more coke and gases. And the characterizations fully illustrated that the size was greatly reduced, the ratios of H/C, N/C and S/C were seriously lowered, the alkyl side chains were much shorted and the aromaticity and condensation degree were significantly enhanced as for remaining asphaltene obtained from the SCW upgrading process. Finally, the transformation pathway of asphaltene was analyzed with the reconstruction of asphaltene macromolecular model at various severity condition and the results showed that the reactivity and structural changes of asphaltene was closely related to the cracking of asphaltene macromolecular into smaller one, the fracture of alkyl side chains and the reaction of dehydrogenation and polymerization. |
| Keyword | Asphaltene Supercritical water Reactivity Structural changes |
| DOI | 10.1016/j.fuel.2020.118331 |
| WOS Keyword | UNSATURATED ALIPHATICS HYDROGENATION ; HEAVY OIL ; COKE FORMATION ; RESIDUAL OIL ; GASIFICATION ; POLYETHYLENE ; PYROLYSIS ; OXIDATION ; BITUMEN ; SUPPRESSION |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2019YFD1100601] ; National Natural Science Foundation of China[21908220] ; National Natural Science Foundation of China[51576198] ; National Natural Science Foundation of China[51876210] ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21060102] ; Guangdong Natural Science Funds[2020A1515010364] |
| WOS Research Area | Energy & Fuels ; Engineering |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Guangdong Natural Science Funds |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000559055900012 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/27604 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Zhang, Xinghua; Ma, Longlong |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, PR, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Li, Ning,Zhang, Xinghua,Zhang, Qi,et al. Reactivity and structural changes of asphaltene during the supercritical water upgrading process[J]. FUEL,2020,278:9. |
| APA | Li, Ning,Zhang, Xinghua,Zhang, Qi,Chen, Lungang,Ma, Longlong,&Xiao, Xianming.(2020).Reactivity and structural changes of asphaltene during the supercritical water upgrading process.FUEL,278,9. |
| MLA | Li, Ning,et al."Reactivity and structural changes of asphaltene during the supercritical water upgrading process".FUEL 278(2020):9. |
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