方案摘要
方案下载应用领域 | 石油/化工 |
检测样本 | 其他 |
检测项目 | |
参考标准 | 暂无 |
This work presents a study of carboxylate adsorption at the fluorite/water interface by vibrational sum frequency spectroscopy(SFG). A homologous series of monocarboxylic ions including formate, acetate, propionate, hexanoate, and dodecanoate was studied in frequency regions corresponding to the îCH and îCO/äCH response. Previously reported vibrational and Raman modes were investigated for their sum frequency activity. For a more reliable band assignment, sum frequency measurements on systematically deuterated compounds were completed and compared with calculated band positions and intensities. Different polarization configurations were utilized, together with symmetry properties of bands derived from a normal-mode analysis, to classify the observed fundamentals and overtones. Differences in chain length led to striking changes in the spectral signatures of the compounds studied and were related to the molecular structure of the adsorbates and interfacial water molecules.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
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