In situ Raman investigation on mixed CH4-C3H8 hydrate dissociation in the presence of polyvinylpyrrolidone

doi:10.1016/j.fuel.2017.11.063

GIEC OpenIR

	In situ Raman investigation on mixed CH4-C3H8 hydrate dissociation in the presence of polyvinylpyrrolidone
	Tang, Cuiping1,2,3,4 ; Zhou, Xuebing 1,2,3,4; Li, Dongliang1,2,3,4 ; Zhao, Xiangyong1,2,3,4 ; Liang, Deqing1,2,3,4
	2018-02-15
发表期刊	FUEL
ISSN	0016-2361
卷号	214 页码:505-511
通讯作者	Liang, Deqing(Liangdq@ms.giec.ac.cn)
摘要	The dissociation of hydrates containing kinetic inhibitors is important for the treatment of gas hydrate blockages in pipelines. In this work, the dissociation of natural gas hydrates in the presence of polyvinylpyrrolidone (PVP) was investigated by Raman spectroscopy and cryo-scanning electron microscope (SEM). The natural gas hydrates were formed from a synthetic natural gas mixture composed of CH4 (95.0 vol%) and C3H8 (5.0 vol%). The results showed that the crystallographic structure of the formed hydrate was structure II (sII) with CH4 encaged in both small and large cages and C3H8 in large cages. Raman spectra showed that PVP could not be captured by the sII hydrate cage and had no influence on the structural type of the hydrate. However, PVP inhibited the occupancy of CH4 molecules in the large cages. The dissociation of hydrates in the presence of PVP was slower than without PVP. No other transient structure was observed during the dissociation and gas hydrate cages were suggested to collapse as an entity, without the interference of PVP. The microstructure of the gas hydrates appeared to change from close-to-spherical to scale-like when PVP was added.
关键词	Gas hydrate Dissociation Kinetic inhibitor Raman spectra
DOI	10.1016/j.fuel.2017.11.063
关键词[WOS]	GAS HYDRATE ; METHANE HYDRATE ; MOLECULAR-DYNAMICS ; KINETIC INHIBITORS ; CRYSTAL-GROWTH ; WATER DROPLETS ; DECOMPOSITION ; PROPANE ; SPECTROSCOPY ; SYSTEMS
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41406103] ; Program of Chinese Academy of Sciences[KGZD-EW-301]
WOS研究方向	Energy & Fuels ; Engineering
项目资助者	National Natural Science Foundation of China ; Program of Chinese Academy of Sciences
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000417103800053
出版者	ELSEVIER SCI LTD
引用统计	被引频次：32[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/344007/22819
专题	中国科学院广州能源研究所
通讯作者	Liang, Deqing
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, 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	Tang, Cuiping,Zhou, Xuebing,Li, Dongliang,et al. In situ Raman investigation on mixed CH4-C3H8 hydrate dissociation in the presence of polyvinylpyrrolidone[J]. FUEL,2018,214:505-511.
APA	Tang, Cuiping,Zhou, Xuebing,Li, Dongliang,Zhao, Xiangyong,&Liang, Deqing.(2018).In situ Raman investigation on mixed CH4-C3H8 hydrate dissociation in the presence of polyvinylpyrrolidone.FUEL,214,505-511.
MLA	Tang, Cuiping,et al."In situ Raman investigation on mixed CH4-C3H8 hydrate dissociation in the presence of polyvinylpyrrolidone".FUEL 214(2018):505-511.