Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| In situ Raman investigation on mixed CH4-C3H8 hydrate dissociation in the presence of polyvinylpyrrolidone | |
Tang, Cuiping1,2,3,4 ; Zhou, Xuebing1,2,3,4; Li, Dongliang1,2,3,4; Zhao, Xiangyong1,2,3,4; Liang, Deqing1,2,3,4
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| 2018-02-15 | |
| Source Publication | FUEL
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| ISSN | 0016-2361 |
| Volume | 214Pages:505-511 |
| Corresponding Author | Liang, Deqing(Liangdq@ms.giec.ac.cn) |
| Abstract | 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. |
| Keyword | Gas hydrate Dissociation Kinetic inhibitor Raman spectra |
| DOI | 10.1016/j.fuel.2017.11.063 |
| WOS Keyword | GAS HYDRATE ; METHANE HYDRATE ; MOLECULAR-DYNAMICS ; KINETIC INHIBITORS ; CRYSTAL-GROWTH ; WATER DROPLETS ; DECOMPOSITION ; PROPANE ; SPECTROSCOPY ; SYSTEMS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41406103] ; Program of Chinese Academy of Sciences[KGZD-EW-301] |
| WOS Research Area | Energy & Fuels ; Engineering |
| Funding Organization | National Natural Science Foundation of China ; Program of Chinese Academy of Sciences |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000417103800053 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/22819 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Liang, Deqing |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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. |
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