分子动力学 在自发浸泡过程中对石英裂孔内的表面活性剂-油相互作用的研究
Shaobo Du1, Jie Huang1, Yangping Liu1
1China Oilfield Service Limited, Tianjin 300459, China.
ACS omega
|February 2, 2026
概括
表面活性剂改变了紧密的水库中的油水可湿性. 像HGME这样的非离子表面活性剂通过在分子水平上修改界面特性,比离子SDS和CTAB更有效地增强油的扩散和回收.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 石油工程是石油工程中的一个.
背景情况:
- 在狭窄的水库中,自发的浸泡依赖于表面活性剂来控制可湿性并促进石油回收.
- 表面活性剂,油和矿物质表面相互作用的分子机制尚未完全理解.
研究的目的:
- 研究油表面活性剂系统在氧化SiO2孔中的界面特性.
- 阐明表面活性剂的极性和结构如何影响吸附,扩散和可湿性.
- 为表面活性剂辅助的油位移提供分子层面的洞察力.
主要方法:
- 用分子动力学模拟来研究SiO2裂孔中的油表面活性剂系统.
- 模拟了三种表面活性剂SDS,CTAB和HGME,以分析它们对界面特性的影响.
- 进行了相互作用能量分析,以了解吸附和稳定机制.
主要成果:
- HGME促进了油的扩散,接触角度为84°-86°,表明增强了湿.
- 由于SDS和CTAB的接触角度更高 (93°-145°),形成了不同的石油聚合物.
- 范德瓦尔斯力主导了界面稳定,而库伦比相互作用影响了方向和亲和力.
- 非离子HGME通过结和分散强烈吸附;离子表面活性剂使用静电相互作用.
结论:
- 不同的表面活性剂会产生不同的界面形态和可湿性特征.
- 与SDS和CTAB相比,HGME在增强表面湿和油散布方面表现优越.
- 这些发现提供了理论指导,用于优化在富含的密集水库中的湿度控制.
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