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Experimental Study on the Formation Kinetics of Methane Hydrates in the Presence of Tetrabutylammonium Bromide
Shi, Lingli1,2,3,4; Shen, Xiaodong1,2,3,4,5; Ding, Jiaxiang1,2,3,4,5; Liang, Deqing1,2,3,4
2017-08-01
Source PublicationENERGY & FUELS
Volume31Issue:8Pages:8540-8547
AbstractTetrabutylammonium bromide (TBAB) could form semiclathrate hydrate under milder conditions compared to gas hydrate and, thus, effectively improve the thermodynamic stability of gas hydrate. To evaluate the effect of TBAB on the formation kinetics of methane hydrates, the kinetic properties of TBAB + CH4 semiclathrate hydrate were investigated with an isobaric method at 7.0 MPa with salt mass fraction and subcooling degree varying from 0.05 to 0.60 and from 4 to 10 K, respectively. The result showed that, with a higher salt concentration and subcooling degree, the induction time presented its stochastic property, while the normalized gas consumption and gas consumption rate were relatively constant and higher, respectively. In addition, Raman spectroscopy, powder X-ray diffraction (PXRD) device, and cryo-scanning electron microscopy were employed to identify the molecular behavior and observe the morphology of the hydrate. The spectra of Raman and PXRD revealed that the CH4 molecules were encaged in dodecahedron cages and its addition induced the orthorhombic pattern, which had the larger potential gas capacity, rather than the tetragonal pattern. The microstructure pictures presented that the addition of TBAB could make the surface of the hydrate more ordered and tight, as a contrary to that of inhibitors, which led to a more chaotic and porous surface. These results could provide important information for hydrate-based industrial applications, such as gas separation and storage.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.energyfuels.7b01213
WOS Subject ExtendedEnergy & Fuels ; Engineering
WOS KeywordN-BUTYLAMMONIUM BROMIDE ; SEMI-CLATHRATE HYDRATE ; SIMULATED FLUE-GAS ; TBAB PLUS WATER ; PHASE-EQUILIBRIUM ; SEMICLATHRATE HYDRATE ; CARBON-DIOXIDE ; DISSOCIATION CONDITIONS ; AQUEOUS-SOLUTIONS ; CRYSTAL-GROWTH
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(51606198 ; Natural Science Foundation of Guangdong Province(2016A030310126) ; Key Laboratory of Gas Hydrate Chinese Academy of Sciences(Y607jb1001) ; 51376182)
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000408178100086
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/16292
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, 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
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi, Lingli,Shen, Xiaodong,Ding, Jiaxiang,et al. Experimental Study on the Formation Kinetics of Methane Hydrates in the Presence of Tetrabutylammonium Bromide[J]. ENERGY & FUELS,2017,31(8):8540-8547.
APA Shi, Lingli,Shen, Xiaodong,Ding, Jiaxiang,&Liang, Deqing.(2017).Experimental Study on the Formation Kinetics of Methane Hydrates in the Presence of Tetrabutylammonium Bromide.ENERGY & FUELS,31(8),8540-8547.
MLA Shi, Lingli,et al."Experimental Study on the Formation Kinetics of Methane Hydrates in the Presence of Tetrabutylammonium Bromide".ENERGY & FUELS 31.8(2017):8540-8547.
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