Synthesis of thiol and dodecyl functionalized silica nanoparticles to stabilize Pickering emulsion for enhanced oil recovery

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-03-21 DOI:10.1016/j.molliq.2025.127439

Zhe Wang , Han Jia , Xinbo Geng , Shijie Wen , Xuehao Zhang , Xiaolong Wen , Qiuyu Xie , Pan Huang

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引用次数: 0

Abstract

In recent years, silica nanoparticles (SNPs) attracted increasing attention in across various fields, especially in enhancing oil recovery (EOR). Herein, the thiol and dodecyl functionalized silica nanoparticles (fSNPs) grafted with different molar ratios of 3-mercaptopropyl trimethoxy-silane (KH590)/dodecyl trimethoxysilane (DTMS) (1:0, 1:0.2, 1:0.4, 1:0.8, 1:1.6 and 1:4.0) were successfully synthesized via a facile two-step method and subsequently employed to stabilize emulsions for EOR. The SNPs were characterized by the Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectrometer (EDS), thermogravimetric analysis (TGA) and transmission electron microscope (TEM). The water contact angle and interfacial tension (IFT) measurements confirmed the amphiphilicity of the fSNPs. Notably, the fSNPs (1:1.6) grafted with a moderate molar ratio of KH590/DTMS significantly decreased the IFT of n-octane/water interface from 51.0 mN/m to 15.0 mN/m. Both the optical microscopy and static multiple light scattering were utilized for systematical stability evaluation of the fSNPs-stabilized emulsions. The fSNPs (1:1.6) stabilized emulsion exhibited excellent stability and remarkable resifstance to temperature and salinity, which should be attributed to the rigid interfacial film generated by the amphiphilic fSNPs. Moreover, core-flooding experiments demonstrated that the fSNPs (1:1.6)-stabilized emulsion effectively plugged the pore throats and enhanced oil recovery by 18.63 %, confirming its excellent potential in EOR applications.

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.