Salinity-dependent adhesion of model molecules of crude oil at quartz surface with different wettability

doi:10.1016/j.fuel.2018.03.040

CORC > 化学研究所 > 中国科学院化学研究所

	Salinity-dependent adhesion of model molecules of crude oil at quartz surface with different wettability
	Liu, Fanghui 1,2; Yang, Hui 1; Wang, Jingyao 3; Zhang, Minghui 1; Chen, Ting 1; Hu, Guangxin 1; Zhang, Wei 1; Wu, Jiangzhong 3; Xu, Shijing 3; Wu, Xu 4
刊名	FUEL
	2018-07-01
卷号	223 页码:401-407
关键词	Low Salinity Effect Specific Functional Group Adhesion Forces Wettability
ISSN号	0016-2361
DOI	10.1016/j.fuel.2018.03.040
英文摘要	The adhesion forces between model chemical moieties of oil molecules (CH3-, C6H5-, COOH-, and NH2-) and quartz surfaces with different wettability were investigated by the aid of chemical force microscopy at low and high salinity (10 mM and 100 mM). Our results showed that the adhesion force on hydrophilic surfaces decreased as in the order: -NH2 > -COOH > -C6H5 approximate to -CH3, due to the contribution of hydrogen bonding interactions between polar groups of functionalized tips and Si-OH groups of quartz surfaces. By comparison, the adhesion force decreased almost in an opposite order: -CH3 > -C6H5 > -COOH approximate to -NH2 , in the case of hydrophobic surfaces, attributed to the strong trend of hydrophobic interactions between nonpolar oil groups and hydrophobic surface (modified with alkyl chains). A high potential of low salinity effect on improving oil recovery can be found in polar oil system in the presence of hydrophilic surfaces, as well as in nonpolar oil system in the presence of hydrophobic surfaces, because of the significantly reduced adhesion forces from high to low salinity environment. Thus it can be concluded that for hydrophilic reservoirs, the low salinity effect may be remarkable in the case of crude oil containing more polar components. And for hydrophobic reservoirs, crude oil with more nonpolar components would exhibit a significant low salinity effect. All these provide a better understanding in the molecular level for low salinity water flooding applications.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000429423700039
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45995]
专题	中国科学院化学研究所
通讯作者	Yang, Hui; Wang, Jinben
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.PetroChina, Res Inst Petr Explorat & Dev, State Key Lab Enhanced Oil Recovery, Beijing 100083, Peoples R China 4.Guangzhou Univ, Dept Chem & Chem Engn, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fanghui,Yang, Hui,Wang, Jingyao,et al. Salinity-dependent adhesion of model molecules of crude oil at quartz surface with different wettability[J]. FUEL,2018,223:401-407.
APA	Liu, Fanghui.,Yang, Hui.,Wang, Jingyao.,Zhang, Minghui.,Chen, Ting.,...&Wang, Jinben.(2018).Salinity-dependent adhesion of model molecules of crude oil at quartz surface with different wettability.FUEL,223,401-407.
MLA	Liu, Fanghui,et al."Salinity-dependent adhesion of model molecules of crude oil at quartz surface with different wettability".FUEL 223(2018):401-407.