Mehrgardi Masoud A, Mofidfar Mohammad, Li Jia, Chamberlayne Christian F, Lynch Stephen R, Zare Richard N
Department of Chemistry, Stanford University, Stanford, California, 94305, USA.
Department of Chemistry, University of Isfahan, Isfahan, 81746, Iran.
Adv Sci (Weinh). 2024 Oct;11(38):e2406785. doi: 10.1002/advs.202406785. Epub 2024 Aug 11.
A straightforward nebulized spray system is designed to explore the hydrogenation of carbon dioxide (CO) within water microdroplets surrounded by different gases such as carbon dioxide, nitrogen, oxygen, and compressed air. The collected droplets are analyzed using water-suppressed nuclear magnetic resonance (NMR). Formate anion (HCOO), acetate anion (CHCOO), ethylene glycol (HOCHCHOH), and methane (CH) are detected when water is nebulized. This pattern persisted when the water is saturated with CO, indicating that CO in the nebulizing gas triggers the formation of these small organics. In a pure CO atmosphere, the formate anion concentration is determined to be ≈70 µm, referenced to dimethyl sulfoxide, which has been introduced as an internal standard in the collected water droplets. This study highlights the power of water microdroplets to initiate unexpected chemistry for the transformation of CO to small organic compounds.
设计了一种简单的雾化喷雾系统，用于探索在由二氧化碳、氮气、氧气和压缩空气等不同气体包围的水微滴中二氧化碳（CO）的氢化反应。使用水抑制核磁共振（NMR）对收集到的液滴进行分析。雾化水时检测到甲酸根阴离子（HCOO）、乙酸根阴离子（CHCOO）、乙二醇（HOCHCHOH）和甲烷（CH）。当水用CO饱和时，这种模式仍然存在，这表明雾化气体中的CO触发了这些小有机物的形成。在纯CO气氛中，以二甲基亚砜为参比，确定收集到的水滴中引入的内标物，甲酸根阴离子浓度约为70 µm。这项研究突出了水微滴引发将CO转化为小有机化合物的意外化学反应的能力。
