电磁波对Mn-doped超偏磁铁氧化物纳米流体的影响:用于增强石油回收的应用
Mohamad Amin Bin Hamid1,2, Beh Hoe Guan1,2, Chan Kar Tim3,4
1Department of Fundamental & Applied Sciences, Universiti Teknologi Petronas Seri Iskandar 32610 Perak Malaysia beh.hoeguan@utp.edu.my +60 108946521 +60 108946521.
RSC advances
|November 11, 2024
概括
电磁波可以降低配合的超偏磁铁氧化物纳米流体的界面张力,增强其改善石油回收应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 石油工程是石油工程中的一个.
背景情况:
- 超偏磁铁氧化物纳米流体正在通过改变水库岩石界面张力 (IFT) 来探索增强石油回收 (EOR).
- 电磁 (EM) 波对 (Mn) 化纳米流体对EOR的影响尚不清楚.
- 了解EM波与胺化Fe3O4纳米流体的相互作用,对于推进EOR技术至关重要.
研究的目的:
- 研究电磁波对Mn-doped超偏磁铁氧化物纳米流体的影响.
- 通过测量IFT,评估这些纳米流体在增强石油回收方面的潜力.
- 探索电磁波与胺化Fe3O4纳米流体之间的相互作用机制.
主要方法:
- 通过协同沉合成了Mn-doped Fe3O4纳米颗粒,并用甲酸稳定.
- 利用密度功能理论 (DFT) 来确定Fe3O4网格中的Mn-dopant位点选择性.
- 使用赫尔姆霍尔茨线圈应用电磁场,并在直流和交流正弦电磁波下测量界面张力 (IFT).
主要成果:
- DFT的计算揭示了 Mn dopants 特定的格子位置偏好.
- 实验结果表明,DC和ACEM波都降低了Mn-doped纳米流体的IFT.
- 观察到的IFT的减少表明石油回收潜力有所提高.
结论:
- 电磁波有效地降低了Mn-doped超偏磁铁氧化物纳米流体的界面张力.
- 这项研究为基于纳米流体的EM波应用提供了新的见解.
- 这些发现支持使用EM响应纳米流体以改善石油回收的潜力.
相关概念视频
Applications Of NMR In Biology
3.7K
Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
3.7K
Atomic Nuclei: Magnetic Resonance
632
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
632
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current
841
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
841


