Millisecond timescale reactions observed via X-ray spectroscopy in a 3D microfabricated fused silica mixer

Huyke, D.A.; Ramachandran, A.; Ramirez-Neri, O.; Guerrero-Cruz, J.A.; Gee, L.B.; Braun, A.; Sokaras, D.; Garcia-Estrada, B.; Solomon, E.I.; Hedman, B.; Delgado-Jaime, M.U.; DePonte, D.P.; Kroll, T.; Santiago, J.G.

doi:10.1107/S1600577521003830

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Figure 5
Results of the 3D numerical convection–diffusion-reaction model. The reaction involved ascorbic acid H₂Asc and ferricyanide $[{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{3-}]$ reactants and dehydroascorbic acid Asc and ferrocyanide $[{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{4-}]$ products. (a) Concentration fields of $[{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{3-}]$ (top row) and $[{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{4-}]$ (bottom row) in isometric view. (b) $[{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{3-}]$ (top row) and $[{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{4-}]$ (bottom row) concentration fields in three y–z planes. Each column of (b) shows an axial position x with corresponding t and depth-averaged, unreacted sample fraction M_R. Data in both panels are for Q_sa = 30 µl min⁻¹, Q_sh = 1 ml min⁻¹, $[{\left[{{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{3-}}\right]_0}]$ = 40 mM, and [H₂Asc]₀ = 200 mM, and pH = 10.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 28| Part 4| July 2021| Pages 1100-1113

https://doi.org/10.1107/S1600577521003830

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