Desorption Mechanism of Asphaltenes in the Presence of Electrolyte and the Extended Derjaguin-Landau-Verwey-Overbeek Theory

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	Desorption Mechanism of Asphaltenes in the Presence of Electrolyte and the Extended Derjaguin-Landau-Verwey-Overbeek Theory
	Yang, Guang 1; Chen, Ting 2; Zhao, Juan 1; Yu, Danfeng 2; Liu, Fanghui 2; Wang, Dongxue 2; Fan, Minghong 2; Chen, Wenjuan 1; Zhang, Jian 1; Yang, Hui 2
刊名	ENERGY & FUELS
	2015-07-01
卷号	29 期号:7 页码:4272-4280
英文摘要	Desorption of asphaltenes from silica-coated quartz crystals upon exposure to a series of saline solutions was studied through the measurements of quartz crystal microbalance with dissipation (QCM-D), atomic force microscopy (AFM), and contact angle. Interestingly, it was found that the mass loading and thickness of asphaltene film decreased during the injection of sodium chloride solution at the concentrations ranging from 1 to 10 mM, with the surface tending to be hydrophilic, whereas the mass loading and film thickness increased gradually when the concentration increased from 10 to 1000 mM, with the surface inclined to be hydrophobic. It was also found that the electrostatic force had a great effect on this process due to the interactions between the charged interfaces of oil/water and water/solid. Besides, some additional interactions may arise under small distance at the presence of the electrolyte solution, and therefore, a direct force-measuring technique was introduced, in which the functionalized AFM tips felt a solid surface to model the interactions among three phases of oil, water, and solid. Based on the computed results of disjoining pressure isotherms, the theory of Derjaguin-Landau-Verwey-Overbeek (DLVO) was extended, taking into account of the participation of hydration forces which played an important role at short range. These structural forces mostly originated from the overlap of the hydrated layers under a variety of salinity concentrations, resulting in the balance of resultant interactions.
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27702]
专题	化学研究所_胶体、界面与化学热力学实验室
作者单位	1.CNOOC Res Inst, State Key Lab Offshore Oil Exploitat, Beijing 100027, Peoples R China 2.Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yang, Guang,Chen, Ting,Zhao, Juan,et al. Desorption Mechanism of Asphaltenes in the Presence of Electrolyte and the Extended Derjaguin-Landau-Verwey-Overbeek Theory[J]. ENERGY & FUELS,2015,29(7):4272-4280.
APA	Yang, Guang.,Chen, Ting.,Zhao, Juan.,Yu, Danfeng.,Liu, Fanghui.,...&Wang, Jinben.(2015).Desorption Mechanism of Asphaltenes in the Presence of Electrolyte and the Extended Derjaguin-Landau-Verwey-Overbeek Theory.ENERGY & FUELS,29(7),4272-4280.
MLA	Yang, Guang,et al."Desorption Mechanism of Asphaltenes in the Presence of Electrolyte and the Extended Derjaguin-Landau-Verwey-Overbeek Theory".ENERGY & FUELS 29.7(2015):4272-4280.