2022-05-04 スイス連邦工科大学ローザンヌ校(EPFL)
＜関連情報＞
- https://actu.epfl.ch/news/imaging-chemical-kinetics-at-liquid-liquid-interfa/
- https://pubs.acs.org/doi/10.1021/jacs.2c01232
自由液面ジェットによる水-水界面の化学反応速度分布のイメージング Imaging of Chemical Kinetics at the Water–Water Interface in a Free-Flowing Liquid Flat-Jet
H. Christian Schewe, Bruno Credidio, Aaron M. Ghrist,Sebastian Malerz, Christian Ozga, André Knie, Henrik Haak, Gerard Meijer, Bernd Winter, and Andreas Osterwalder
JACS Published:April 26, 2022
DOI:https://doi.org/10.1021/jacs.2c01232
Abstract
We present chemical kinetics measurements of the luminol oxidation chemiluminescence (CL) reaction at the interface between two aqueous solutions, using liquid jet technology. Free-flowing liquid microjets are a relatively recent development that have found their 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 CL reaction, how this setup can be used to obtain kinetics information from friction-less flow and by circumventing the requirement for rapid mixing by intentionally suppressing all turbulent mixing and instead relying on diffusion.
