Imaging of Chemical Kinetics at the Water-Water Interface in a Free-Flowing Liquid Flat-Jet
| Autor: | H. Christian Schewe, Bruno Credidio, Aaron M. Ghrist, Sebastian Malerz, Christian Ozga, André Knie, Henrik Haak, Gerard Meijer, Bernd Winter, Andreas Osterwalder |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Flatjets Chemiluminescence Fluid Dynamics (physics.flu-dyn) FOS: Physical sciences Water Physics - Fluid Dynamics General Chemistry Interface Biochemistry Catalysis Diffusion Physics::Fluid Dynamics Kinetics Colloid and Surface Chemistry Physics - Chemical Physics Luminol |
| Zdroj: | Journal of the American Chemical Society |
| Popis: | We present chemical kinetics measurements of the luminol oxydation chemiluminescence reaction at the interface between two aqueous solutions, using liquid jet technology. Free-flowing iquid microjets are a relatively recent development that has found its way into a growing number of applications in spectroscopy and dynamics. A variant thereof, called flat-jet, is obtained when two cylindrical jets of a liquid are crossed, leading to a chain of planar leaf-shaped structures of the flowing liquid. We here show that in the first leaf of this chain the fluids do not exhibit turbulent mixing, providing a clean interface between the liquids from the impinging jets. We also show, using the example of the luminol chemiluminescence reaction, how this setup can be used to obtain kinetics information from friction-less flow and by circumventing the requirement for rapid mixing but by intentionally suppressing all turbulent mixing and instead relying on diffusion. |
| Databáze: | OpenAIRE |
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