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Investigation of kinetics of tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation
Shi, Lingli1,2,3; Liang, Deqing1,2,3
2017
发表期刊RSC ADVANCES
ISSN2046-2069
卷号7期号:84页码:53563-53569
通讯作者Liang, Deqing(liangdq@ms.giec.ac.cn)
摘要For potential application in advanced gas storage at moderate temperatures, a systematic study on tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation kinetics was conducted using isobaric kinetics measurements to evaluate the effects of pressure (6.0, 3.0 MPa), temperature (278 K, subcooling degree of 6 K), and salt concentration (0.10, 0.20, 0.30, 0.34, 0.45 mass fraction). The results revealed that the systems showed shorter induction time, higher normalized gas consumption and higher rapid growth rate under a higher supersaturation environment, represented by higher pressure or lower temperature. Besides, the effect of salt concentration was complicated. With the increase of salt concentration, the total gas consumption was almost the same while the normalized gas consumption decreased greatly, indicating that the amount of CH4 trapped in the hydrate unit greatly decreased and the system with low salt concentration was a good choice for advanced gas storage. In addition, a Raman device was employed to reveal the structural properties. The spectra showed that the (TBAC + CH4) semiclathrate hydrates were formed with hexagonal structure or tetragonal structure under different salt concentrations, which were different from the structures of pure TBAC hydrate. It was assumed that at low salt concentrations the addition of CH4 induced the formation of hexagonal structure since it had three 512 cages per TBAC which was higher than that of the tetragonal structure.
DOI10.1039/c7ra10595a
关键词[WOS]BUTYL AMMONIUM BROMIDE ; METHANE HYDRATE FORMATION ; PHASE-EQUILIBRIUM CONDITIONS ; N-BUTYLAMMONIUM CHLORIDE ; CLATHRATE HYDRATE ; AQUEOUS-SOLUTIONS ; CARBON-DIOXIDE ; CO2 CAPTURE ; TETRABUTYLPHOSPHONIUM BROMIDE ; COLD-STORAGE
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[51606198] ; National Natural Science Foundation of China[51376182] ; Natural Science Foundation of Guangdong Province[2016A030310126] ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences[Y607jb1001]
WOS研究方向Chemistry
项目资助者National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000416049900064
出版者ROYAL SOC CHEMISTRY
引用统计
被引频次:5[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/344007/16740
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, CAS Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
3.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
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Shi, Lingli,Liang, Deqing. Investigation of kinetics of tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation[J]. RSC ADVANCES,2017,7(84):53563-53569.
APA Shi, Lingli,&Liang, Deqing.(2017).Investigation of kinetics of tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation.RSC ADVANCES,7(84),53563-53569.
MLA Shi, Lingli,et al."Investigation of kinetics of tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation".RSC ADVANCES 7.84(2017):53563-53569.
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