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题名: "Peeling Off" Mechanism of Asphaltenes from Solid/Liquid Interface in the Presence of a Highly Charged Amphiphilic Macromolecule
作者: Chen, Ting1, 2; Liu, Fanghui1; Huang, Shizhe1; Zhan, Wei1; Wang, Hui1; Hou, Qingfeng3; Guo, Donghong3; Ma, Aiging4; Sun, Keji4; Yang, Hui1; Wang, Jinben1
刊名: ENERGY & FUELS
发表日期: 2016-11-01
卷: 30, 期:11, 页:9250-9259
收录类别: SCI
英文摘要: Asphaltene desorption from silica-coated quartz crystal surface, in the presence of a highly charged amphiphilic macromolecule (polyacryloyloxyethyl-N,N-dimethyl-N-benzylammonium bromide, denoted as PASBn), was investigated through a quartz crystal microbalance with dissipation, atomic force microcopy, and ultraviolet spectroscopy measurements. The results showed that asphaltenes were displaced by PASBn even at a low concentration of 0.5 g/L, mainly attributed to the electrostatic, polar, and hydrophobic interactions between asphaltenes and PASBn, as well as the electrostatic interactions between PASBn and binding sites of the solid surface. In order to understand the processes of asphaltene desorption and PASBn adsorption, the random sequential adsorption model was introduced. Unfortunately, this classical model was not consistent with the kinetic process of asphaltenes exposed to PASBn aqueous solution, due to the complex adsorption desorption processes, including the detachment of asphaltenes, subsequent transport of the detached ones to the bulk, and the adsorption of PASBn. Furthermore, a new kinetic model and a reasonable physical model were proposed to reveal the desorption mechanism of asphaltenes from the solid/liquid interface, providing a new way of improving heavy oil recovery.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36509
Appears in Collections:胶体、界面与化学热力学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CNPC, Res Inst Petr Explorat & Dev, Key Lab Oilfield Chem, Beijing 100083, Peoples R China
4.Shengli Oilfield Branch Co, Sinopec, Oi1 Prod Technol Res Inst, Dongying 257000, Shandong, Peoples R China
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