Reactivity and structural changes of asphaltene during the supercritical water upgrading process

doi:10.1016/j.fuel.2020.118331

GIEC OpenIR

	Reactivity and structural changes of asphaltene during the supercritical water upgrading process
	Li, Ning 1,2,3; Zhang, Xinghua1,2 ; Zhang, Qi1,2 ; Chen, Lungang 1,2; Ma, Longlong1,2 ; Xiao, Xianming 3
	2020-10-15
发表期刊	FUEL
ISSN	0016-2361
卷号	278 页码:9
通讯作者	Zhang, Xinghua(zhangxh@ms.giec.ac.cn) ; Ma, Longlong(mall@ms.giec.ac.cn)
摘要	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.
关键词	Asphaltene Supercritical water Reactivity Structural changes
DOI	10.1016/j.fuel.2020.118331
关键词[WOS]	UNSATURATED ALIPHATICS HYDROGENATION ; HEAVY OIL ; COKE FORMATION ; RESIDUAL OIL ; GASIFICATION ; POLYETHYLENE ; PYROLYSIS ; OXIDATION ; BITUMEN ; SUPPRESSION
收录类别	SCI
语种	英语
资助项目	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研究方向	Energy & Fuels ; Engineering
项目资助者	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类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000559055900012
出版者	ELSEVIER SCI LTD
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/27604
专题	中国科学院广州能源研究所
通讯作者	Zhang, Xinghua; Ma, Longlong
作者单位	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
第一作者单位	中国科学院广州能源研究所
推荐引用方式 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.