Reactive Mass Transfer around Isolated Bubbles Rising in a Thin‐Gap Cell

Chemical Engineering & Technology, vol. 46, pp. 1664–1672

Abstract

Abstract The reactive mass transfer around isolated bubbles of pure oxygen rising in a thin‐gap cell filled with acetonitrile at rest is investigated. A colorimetric technique based on the bio‐inspired copper(I) complex [Cu(TMG2tol)]OTf is used. The gap‐ and time‐averaged dissolved oxygen concentration fields can be measured in the far‐wake of the bubbles with 3 < d < 47 mm. The variations of the Sherwood numbers with the Péclet numbers indicate that the mass transfer results obtained are identical with the ones measured earlier with the copper(I) complex [Cu(btmgp)I]. This demonstrates the independency of mass transfer from the properties of the chemical system used. The results significantly enlarge the existing database, which is of great importance to establish robust scaling laws.

Authors 5

1. Larissa Laurini Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute of Inorganic Chemistry Landoltweg 1a 52074 Aachen Germany

2. Arthur Béteille

   Centre National de la Recherche Scientifique · Université Toulouse III - Paul Sabatier · Institut National Polytechnique de Toulouse · Laboratoire de Génie Chimique · Université de Toulouse

   Affiliation as printed

   Université de Toulouse, CNRS, INPT, UPS Laboratoire de Génie Chimique 4 allée Emile Monso, CS 84234 31432 Toulouse cedex 4 France

3. Gerhard Fink Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute of Inorganic Chemistry Landoltweg 1a 52074 Aachen Germany

4. Sonja Herres‐Pawlis Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute of Inorganic Chemistry Landoltweg 1a 52074 Aachen Germany

5. Karine Loubière corresponding

   Centre National de la Recherche Scientifique · Université Toulouse III - Paul Sabatier · Institut National Polytechnique de Toulouse · Laboratoire de Génie Chimique · Université de Toulouse

   Affiliation as printed

   Fédération de Recherche FERMAT, CNRS 135 Av. de Rangueil 31400 Toulouse France

   Université de Toulouse, CNRS, INPT, UPS Laboratoire de Génie Chimique 4 allée Emile Monso, CS 84234 31432 Toulouse cedex 4 France