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非离子表面活性剂在黏土矿物表面的吸附规律研究

ZHAO Shuai,TIAN Yu,ZHENG Hao-xuan, TIAN Hao-rui, ZHANG Rui,HU Qiang-qiang, YAN Xiao-long,SHI Yong-min

Applied Chemical Industry(2023)

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Abstract
为针对不同地层选取适应性更强的化学剂,减少黏土矿物对表面活性剂的吸附损耗,以脂肪醇聚氧乙烯类表面活性剂为例,采用静态吸附法研究非离子表面活性剂在不同黏土矿物表面的吸附规律,探讨不同EO加成数、不同碳链数、临界胶束浓度和Zeta电位对非离子表面活性剂吸附机理的影响.结果表明,在吸附过程中,碳链长度-疏水性-吸附量之间始终为正反馈效果;EO加成数-氢键/疏水性-吸附量之间的关系取决于氢键强度与疏水性强度的关系.优选得出十二烷基醇聚氧乙烯醚-7 为抗吸附性较好的非离子表面活性剂,也为三次采油过程中化学剂的选取提供了依据.
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Key words
adsorption and loss,fatty alcohol polyoxyethylene ether,critical micelle concentration,Zeta potential
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