TY  - JOUR
AU  - Bertram, Franziska
AU  - Hofmann, Jörg
AU  - Gottschalk, Jan
AU  - Weißenberg, Felix
AU  - Brands, Thorsten
AU  - Holly, Carlo
AU  - Jupke, Andreas
TI  - Development of a two-dimensional Raman spectroscopy measuring technique for the visualization of mass transfer during droplet formation
JO  - Chemical engineering science
VL  - 320
SN  - 0009-2509
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2026-00736
SP  - 122444 -
PY  - 2026
AB  - A novel two-dimensional Raman spectroscopy measurement setup is developed to visualize mass transfer during droplet formation and applied to the water/acetonitrile/toluene system. This setup enables direct observation of local solute contents. Experiments were conducted using 2 mm and 4 mm droplets with an initial acetonitrile content of 10 wt%. The results are qualitatively consistent with findings reported in the literature for similar systems. Initial calibration measurements using single-phase systems demonstrated linear correlations between measured intensities and solute contents in both phases, though a baseline shift in the organic phase was attributed to the presence of toluene. Applying these correlations to droplet formation experiments resulted in an overestimation of local acetonitrile contents. Future work will focus on further refining the quantification capabilities of the measurement setup.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1016/j.ces.2025.122444
UR  - https://juser.fz-juelich.de/record/1052066
ER  -