Effects of Salinity on Formation Behavior of Methane Hydrate in Montmorillonite

doi:10.3390/en13010231

GIEC OpenIR

	Effects of Salinity on Formation Behavior of Methane Hydrate in Montmorillonite
	Tao, Yuanqing 1,2,3,4; Yan, Kefeng1,2,3,4 ; Li, Xiaosen1,2,3,4 ; Chen, Zhaoyang 1,2,3,4; Yu, Yisong 1,2,3,4; Xu, Chungang 1,2,3,4
	2020
发表期刊	ENERGIES
卷号	13 期号:1 页码:15
通讯作者	Li, Xiaosen(lixs@ms.giec.ac.cn)
摘要	In marine sediments, seawater influences the phase behavior of natural gas hydrate. As a porous medium, the water distribution and physical properties of montmorillonite are influenced by the salt ions in seawater. In this work, the bound-water content in, and crystal structure of, montmorillonite is measured to investigate the effect of salt ions on the water distribution in montmorillonite. It can be determined from the results that the bound-water content in montmorillonite decreases as the salt-ion concentration increases. Salt ions affect the intercalation of water molecules in montmorillonite, and they then inhibit the expansion effect of montmorillonite. Next, the phase behaviors of methane hydrate in montmorillonite with NaCl solution are investigated using high-pressure micro-differential scanning calorimetry. The phase behavior of hydrate in montmorillonite with NaCl solution is discussed. In montmorillonite with NaCl solution, the phase equilibrium temperatures and the conversion rate of methane hydrate both decrease with increasing NaCl concentration. The results show that methane hydrate in montmorillonite is influenced not only by the phase-equilibrium effect of salt ions, but also by the formation effect of the salt ions on the bound-water content in montmorillonite.
关键词	natural gas hydrate montmorillonite salt ions bound water
DOI	10.3390/en13010231
关键词[WOS]	NATURAL-GAS HYDRATE ; SOUTH CHINA SEA ; MOLECULAR-DYNAMICS SIMULATION ; CLAY MINERAL DISTRIBUTION ; DISSOCIATION CONDITIONS ; EQUILIBRIUM CONDITIONS ; SWELLING BEHAVIOR ; SURFACE SEDIMENTS ; PORE-WATER ; STABILITY
收录类别	SCI
语种	英语
资助项目	Key Program of the National Natural Science Foundation of China[51736009] ; Natural Science Foundation of Guangdong Province of China[2019A1515012086] ; Natural Science Foundation of Guangdong Province of China[2017A030313301] ; Special project for marine economy development of Guangdong Province[GDME-2018D002] ; National Key R&D Program of China[2016YFC0304002] ; National Key R&D Program of China[2017YFC0307306] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences (CAS)[YZ201619] ; Frontier Sciences Key Research Program of the Chinese Academy of Sciences[QYZDJ-SSW-JSC033] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY SLH041] ; Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education[LOEC-201802]
WOS研究方向	Energy & Fuels
项目资助者	Key Program of the National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province of China ; Special project for marine economy development of Guangdong Province ; National Key R&D Program of China ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences (CAS) ; Frontier Sciences Key Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education
WOS类目	Energy & Fuels
WOS记录号	WOS:000520425800231
出版者	MDPI
引用统计	被引频次：7[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/344007/26852
专题	中国科学院广州能源研究所
通讯作者	Li, Xiaosen
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, 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	Tao, Yuanqing,Yan, Kefeng,Li, Xiaosen,et al. Effects of Salinity on Formation Behavior of Methane Hydrate in Montmorillonite[J]. ENERGIES,2020,13(1):15.
APA	Tao, Yuanqing,Yan, Kefeng,Li, Xiaosen,Chen, Zhaoyang,Yu, Yisong,&Xu, Chungang.(2020).Effects of Salinity on Formation Behavior of Methane Hydrate in Montmorillonite.ENERGIES,13(1),15.
MLA	Tao, Yuanqing,et al."Effects of Salinity on Formation Behavior of Methane Hydrate in Montmorillonite".ENERGIES 13.1(2020):15.