<p>Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation</p>

doi:10.1016/j.energy.2021.123056

GIEC OpenIR

	Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation
	Long, Zhen 1,2,3,4; Zhou, Xuebing 1,2,3,4; Lu, Zhilin 1,2,3,4; Liang, Deqing1,2,3,4
	2022-03-01
发表期刊	ENERGY
ISSN	0360-5442
卷号	242 页码:12
通讯作者	Liang, Deqing(liangdq@ms.giec.ac.cn)
摘要	Low dosage kinetic hydrate inhibitors play an important role in flow assurance for oil and gas industry. New polymers especially based on N-vinyl caprolactam (NVCap) are widely designed to serve as potential inhibitors. In this work, a series of random copolymers of NVCap with hydrophobic monomer isopropylacrylamide (NIPAM) were synthesized. The effect of molecular weight on inhibition performance of newly copolymers (PVCap-co-NIPAM)s on CH4 hydrate formation were firstly examined and compared with N-vinyl caprolactam homopolymer (PVCap). The macroscopic kinetic tests indicated that all the copolymers were more powerful than PVCap as nucleation inhibitors under the same conditions. Significant reductions in the hydrate growth rates by 1.0 wt% inhibitors were also observed. Copolymers with the lowest molecular weight possessed the best suppression performance. Powder X-ray diffraction and Raman spectra indicated neither PVCap nor PVCap-co-NIPAM affected the hydrate structure due to their too large molecular size to match the hydrate cages. However, cage-dependent gas occupancy calculated from Raman data proved that the polymers preferred to hinder CH4 molecules from being trapped by large cages (5(1,2)6(2)). A possible inhibition mechanism of PVCap-co-NIPAM was also proposed. These results could be helpful to develop synergistic kinetic hydrate inhibitors for guaranteeing pipeline fluids transportation safety. (C) 2021 Elsevier Ltd. All rights reserved.
关键词	Kinetic hydrate inhibitors (KHIs) Poly (N-vinyl caprolactam)-co-isopropylacrylamide) (PVCap-co-NIPAM) Subcooling Growth Micro-structure
DOI	10.1016/j.energy.2021.123056
关键词[WOS]	AMPHIPHILIC BLOCK-COPOLYMERS ; MONOETHYLENE GLYCOL ; KINETIC INHIBITION ; GAS ; VINYLCAPROLACTAM ; AGGLOMERATION ; DISSOCIATION ; POLYMERS ; ENERGY ; WATER
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51506202] ; Pearl River S&T Nova Program of Guangzhou[201806010114] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278]
WOS研究方向	Thermodynamics ; Energy & Fuels
项目资助者	National Natural Science Foundation of China ; Pearl River S&T Nova Program of Guangzhou ; Guangdong Special Support Program-Local innovation and entrepreneurship team project
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:000792909400002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：9[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/344007/36495
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, 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.State Key Lab Nat Gas Hydrate, Beijing 100028, 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	Long, Zhen,Zhou, Xuebing,Lu, Zhilin,et al. Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation [J]. ENERGY,2022,242:12.
APA	Long, Zhen,Zhou, Xuebing,Lu, Zhilin,&Liang, Deqing.(2022). Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation .ENERGY,242,12.
MLA	Long, Zhen,et al." Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation ".ENERGY 242(2022):12.