摘要
选用不同类型的固体颗粒与石油磺盐(DPS)复配,形成不同类型的油水乳状液,对二者协同作用稳定乳液的机理进行了探讨。研究表明,亲水性纳米二氧化硅与DPS组合不能形成稳定的乳液;氧化铝改性的纳米二氧化硅、疏水性纳米二氧化硅、碳纳米管、膨润土均可以与DPS发生协同作用,形成稳定的Pickering乳状液,这是因为这些固体颗粒满足以下特征之一:表面带有正电荷或者具有较长的疏水链;固体颗粒的形貌为层状结构,且具有一定的吸附性;具有C纳米管的管状结构,且侧壁含有高度离域的π电子。上述研究也为该体系在化学驱中的应用奠定了基础。
Through different types of solid particles and DPS composite,the oil and water emulsion with different types was formed,the mechanism of stabilizing emulsion was discussed. The results showed that the hydrophilic nano silica with petroleum sulfonate could not formed stable Pickering emulsion. Hydrophobic nano silica,alumina modified nano silica,bentonite and carbon nanotubes with petroleum sulfonate could act synergistically to form a stable emulsion. This is because these particles meet the following characteristics： positive charge or a longer hydrophobic chain on the surface; solid particles morphology is a layered structure,and has some adsorption; nanoparticles having a tubular structure of C nanotubes,and the sidewalls containing highly delocalized π electrons. This lays a foundation for the application of this system in chemical flooding.
作者
于朋
朱友益
李文军
田婧
YU Peng;ZHU Y-ou-yi;LI Wen-jun;TIAN Jing(Department of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China;China Petroleum Exploration and Development Research Institute, Beijing 100083, China)
出处
《应用化工》
CAS
CSCD
北大核心
2018年第4期663-667,共5页
Applied Chemical Industry
基金
国家科技重大专项(2016ZX05010-004)
中国石油股份公司重大科技专项(2017E-3507)
