Investigation into the Inhibition of Methane Hydrate Formation in the Presence of Hydroxy- and Esteryl-Terminated Poly(N-vinylcaprolactam)

doi:10.1021/acs.energyfuels.1c04438

GIEC OpenIR

	Investigation into the Inhibition of Methane Hydrate Formation in the Presence of Hydroxy- and Esteryl-Terminated Poly(N-vinylcaprolactam)
	Tang, Cuiping1,2,3 ; Zhang, Yanan 1,2,3,4; Liang, Deqing1,2,3
	2022-04-07
发表期刊	ENERGY & FUELS
ISSN	0887-0624
卷号	36 期号:7 页码:3848-3856
通讯作者	Liang, Deqing(liangdq@ms.giec.ac.cn)
摘要	Adding hydrate inhibitors is an important method to prevent gas hydrates from blocking oil and gas pipelines and ground equipment. In this work, on the basis of polyvinyl caprolactam (PVCap), an ester group and a hydroxyl group were introduced into the molecular chain end of PVCap to synthesize a blocked modified inhibitor, Es-PVCap-OH. Fourier transform infrared spectroscopy, H-1 NMR, and gel permeation chromatography methods were used to characterize PVCap and Es-PVCap-OH. The inhibition performance of Es-PVCap-OH for the formation of methane hydrate was studied and compared with that of the kinetic inhibitor PVCap. Powder X-ray diffraction, Raman spectroscopy, and cryogenic scanning electron microscopy (cryo-SEM) were used to characterize the microstructure of methane hydrate. The results showed that Es-PVCap-OH had better kinetic hydrate inhibitor performance and higher maximum subcooling than PVCap at the same concentration for methane gas hydrate formation. With 1 wt % Es-PVCap-OH solution, the induction time of hydrate formation increased by about 1400 min compared with that of the pure water system. Es-PVCap-OH selectively acts on specific hydrate crystal planes and affects the relative peak intensities of crystal planes. The addition of Es-PVCap-OH can substantially reduce the occupancy ratio of methane in the large cages of the hydrate lattice and change the morphology of the hydrate from submicron pores to a scaly cluster.
DOI	10.1021/acs.energyfuels.1c04438
关键词[WOS]	KINETIC HYDRATE ; GAS-HYDRATE ; PERFORMANCE ; DISSOCIATION ; PRESERVATION ; TEMPERATURE ; EQUILIBRIA ; PREDICTION ; DEPENDENCE
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51876211] ; Guangdong Special Support Program-local innovation and entrepreneurship team project[2019BT02L278] ; Natural Science Foundation of Guangdong Province[2021A1515110698] ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences[E129020301]
WOS研究方向	Energy & Fuels ; Engineering
项目资助者	National Natural Science Foundation of China ; Guangdong Special Support Program-local innovation and entrepreneurship team project ; Natural Science Foundation of Guangdong Province ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000797939400038
出版者	AMER CHEMICAL SOC
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/344007/36609
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, Guangzhou 510640, Peoples R China 2.CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy 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	Tang, Cuiping,Zhang, Yanan,Liang, Deqing. Investigation into the Inhibition of Methane Hydrate Formation in the Presence of Hydroxy- and Esteryl-Terminated Poly(N-vinylcaprolactam)[J]. ENERGY & FUELS,2022,36(7):3848-3856.
APA	Tang, Cuiping,Zhang, Yanan,&Liang, Deqing.(2022).Investigation into the Inhibition of Methane Hydrate Formation in the Presence of Hydroxy- and Esteryl-Terminated Poly(N-vinylcaprolactam).ENERGY & FUELS,36(7),3848-3856.
MLA	Tang, Cuiping,et al."Investigation into the Inhibition of Methane Hydrate Formation in the Presence of Hydroxy- and Esteryl-Terminated Poly(N-vinylcaprolactam)".ENERGY & FUELS 36.7(2022):3848-3856.