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Tools to Investigate Structure at Hydrocarbon–Air Interfaces: Field-Induced Droplet Ionization Mass Spectrometry and Sum-Frequency Generation with Pulsed Lasers
Energy & Fuels ( IF 5.2 ) Pub Date : 2024-01-25 , DOI: 10.1021/acs.energyfuels.3c04569 Theis I. Sølling 1 , Ahmed M. El Zohry 1 , A. H. M. Emon Ali 2 , Steven Baldelli 2 , Jesse L. Beauchamp 3
Energy & Fuels ( IF 5.2 ) Pub Date : 2024-01-25 , DOI: 10.1021/acs.energyfuels.3c04569 Theis I. Sølling 1 , Ahmed M. El Zohry 1 , A. H. M. Emon Ali 2 , Steven Baldelli 2 , Jesse L. Beauchamp 3
Affiliation
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An overview is presented relating to the use of field-induced droplet ionization (FIDI) and sum-frequency generation (SFG) to unravel questions pertaining to interfacial structure in general and real-world processes in particular. The present contribution focuses on the study of air crude oil interfaces as addressed by a comparison of electrospray ionization spectra and interface-sensitive FIDI methodology. FIDI reveals clear trends toward the specific orientation of select crude components at the interface. We provide evidence that the determining factor for what places itself at the interface is the unpolar nature of air. SFG as a well-established technique shows the sensitivity toward molecular alignments, and molecular interactions for a few model polar and nonpolar systems. The implications of being able to address interfacial structure are discussed in the context of determining molecular orientation in sum-frequency generation experiments as model examples. The combined information identifies factors that play a major role in impacting macroscopic properties, such as interfacial tension, which is a key player in efforts that focus on enhanced oil recovery.
中文翻译：
研究碳氢化合物-空气界面结构的工具：场诱导液滴电离质谱法和脉冲激光产生和频
概述了使用场诱导液滴电离 (FIDI) 和和频发生 (SFG) 来解决与一般过程和特别是现实世界过程中的界面结构有关的问题。目前的贡献重点是通过电喷雾电离谱和界面敏感 FIDI 方法的比较来研究空气原油界面。 FIDI 揭示了界面处选定原油成分特定方向的明显趋势。我们提供的证据表明，空气的非极性性质是界面上的决定因素。 SFG 作为一种成熟的技术，显示了对一些模型极性和非极性系统的分子排列和分子相互作用的敏感性。在作为模型示例的和频生成实验中确定分子取向的背景下讨论了能够解决界面结构的含义。综合信息确定了在影响宏观性能方面发挥主要作用的因素，例如界面张力，这是提高石油采收率的关键因素。
更新日期：2024-01-25
中文翻译：
研究碳氢化合物-空气界面结构的工具：场诱导液滴电离质谱法和脉冲激光产生和频
概述了使用场诱导液滴电离 (FIDI) 和和频发生 (SFG) 来解决与一般过程和特别是现实世界过程中的界面结构有关的问题。目前的贡献重点是通过电喷雾电离谱和界面敏感 FIDI 方法的比较来研究空气原油界面。 FIDI 揭示了界面处选定原油成分特定方向的明显趋势。我们提供的证据表明，空气的非极性性质是界面上的决定因素。 SFG 作为一种成熟的技术，显示了对一些模型极性和非极性系统的分子排列和分子相互作用的敏感性。在作为模型示例的和频生成实验中确定分子取向的背景下讨论了能够解决界面结构的含义。综合信息确定了在影响宏观性能方面发挥主要作用的因素，例如界面张力，这是提高石油采收率的关键因素。
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