Formation of a Low-Density Liquid Phase during the Dissociation of Gas Hydrates in Confined Environments

doi:10.3390/nano11030590

	Formation of a Low-Density Liquid Phase during the Dissociation of Gas Hydrates in Confined Environments
	Wan, Lihua 1,2,3,4; Zang, Xiaoya 1,2,3,4; Fu, Juan 2,4; Zhou, Xuebing 1,2,3,4; Lu, Jingsheng 1,2,3,4; Guan, Jinan 1,2,3,4; Liang, Deqing 1,2,3,4
刊名	NANOMATERIALS
	2021-03-01
卷号	11 期号:3 页码:15
关键词	nanoscale gas hydrate nanoscale pores decomposition mechanism low-density liquid water dissociation behavior
DOI	10.3390/nano11030590
通讯作者	Wan, Lihua(wanlh@ms.giec.ac.cn)
英文摘要	The large amounts of natural gas in a dense solid phase stored in the confined environment of porous materials have become a new, potential method for storing and transporting natural gas. However, there is no experimental evidence to accurately determine the phase state of water during nanoscale gas hydrate dissociation. The results on the dissociation behavior of methane hydrates confined in a nanosilica gel and the contained water phase state during hydrate dissociation at temperatures below the ice point and under atmospheric pressure are presented. Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffraction (PXRD) were used to trace the dissociation of confined methane hydrate synthesized from pore water confined inside the nanosilica gel. The characterization of the confined methane hydrate was also analyzed by PXRD. It was found that the confined methane hydrates dissociated into ultra viscous low-density liquid water (LDL) and methane gas. The results showed that the mechanism of confined methane hydrate dissociation at temperatures below the ice point depended on the phase state of water during hydrate dissociation.
资助项目	National Natural Science Foundation of China (NSFC)[51576197] ; National Natural Science Foundation of China (NSFC)[52004261] ; National Natural Science Foundation of China (NSFC)[51676197] ; PetroChina Innovation Foundation[2019D-5007-0216] ; Guangdong Province Natural Science Foundation of China[2020A1515011120] ; National Key Research and Development Plan of China[2016YFC0304002] ; Guangdong Province MEDProject[GDME-2018D002]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000633952600001
资助机构	National Natural Science Foundation of China (NSFC) ; PetroChina Innovation Foundation ; Guangdong Province Natural Science Foundation of China ; National Key Research and Development Plan of China ; Guangdong Province MEDProject
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32882]
专题	中国科学院广州能源研究所
通讯作者	Wan, Lihua
作者单位	1.Chinese Acad Sci, CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Wan, Lihua,Zang, Xiaoya,Fu, Juan,et al. Formation of a Low-Density Liquid Phase during the Dissociation of Gas Hydrates in Confined Environments[J]. NANOMATERIALS,2021,11(3):15.
APA	Wan, Lihua.,Zang, Xiaoya.,Fu, Juan.,Zhou, Xuebing.,Lu, Jingsheng.,...&Liang, Deqing.(2021).Formation of a Low-Density Liquid Phase during the Dissociation of Gas Hydrates in Confined Environments.NANOMATERIALS,11(3),15.
MLA	Wan, Lihua,et al."Formation of a Low-Density Liquid Phase during the Dissociation of Gas Hydrates in Confined Environments".NANOMATERIALS 11.3(2021):15.