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DOI	10.1038/s41598-018-28555-y
	Nucleation Mechanisms of CO2 Hydrate Reflected by Gas Solubility
	Zhang, Peng; Wu, Qingbai; Mu, Cuicui; Chen, Xueping
发表日期	2018
ISSN	2045-2322
卷号	8
英文摘要	The concentration of gas has been confirmed as a key factor dominating hydrate nucleation. In this study, CO2 hydrates were formed in pure water and a sodium dodecyl sulphate (SDS) solution using a temperature reduction method under constant pressure at different temperatures. The dissolving properties of CO2 throughout the whole induction period were investigated in detail. The experimental results showed that the 'memory effect' of hydrate might not be attributed to residual water structures after hydrate dissociation. Instead, residual gas molecules in the aqueous phase should receive more attention. Hydrate nucleation was confirmed to be a type of chain reaction. Low temperature was a significant factor that promoted hydrate nucleation. As a result, these two factors enhanced the stochastic features of the CO2 hydrate nucleation reaction. Even under the same conditions, critical gas concentrations beyond the threshold that hydrates can spontaneously nucleate were not fixed, but they still exhibited linear relations regarding a set temperature. Taking the significant influences of temperature into account, a new nucleation mechanism for CO2 hydrates was established based on the potential of the reaction system. Therefore, this study sheds new light when explaining the reason for the formation of gas hydrates in natural reservoirs.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS关键词	PRE-COMBUSTION CAPTURE ; NEAR-AMBIENT TEMPERATURES ; GLOBAL CARBON-CYCLE ; METHANE HYDRATE ; FLUE-GAS ; MOLECULAR-DYNAMICS ; FORMATION KINETICS ; AQUEOUS-SOLUTIONS ; MARINE-SEDIMENTS ; DIOXIDE
WOS记录号	WOS:000438190200018
来源期刊	SCIENTIFIC REPORTS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240235
作者单位	[Zhang, Peng; Wu, Qingbai; Chen, Xueping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Mu, Cuicui] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Peng,Wu, Qingbai,Mu, Cuicui,et al. Nucleation Mechanisms of CO2 Hydrate Reflected by Gas Solubility[J]. 中国科学院西北生态环境资源研究院,2018,8.
APA	Zhang, Peng,Wu, Qingbai,Mu, Cuicui,&Chen, Xueping.(2018).Nucleation Mechanisms of CO2 Hydrate Reflected by Gas Solubility.SCIENTIFIC REPORTS,8.
MLA	Zhang, Peng,et al."Nucleation Mechanisms of CO2 Hydrate Reflected by Gas Solubility".SCIENTIFIC REPORTS 8(2018).