Suspension catalysis in a liquid–liquid capillary microreactor

Ufer, A.; Sudhoff, Daniel; Mescher, Axel; Agar, David W.

doi:10.1016/j.cej.2010.09.088

Cited by 60 publications

(52 citation statements)

References 21 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It has been demonstrated in aqueous-organic slug flow that vortices in the continuous segment are fully developed, i.e., e = 1 [50]. The IL appears as continuous phase, wetting the glass capillary wall and encapsulating the organic slugs.…”

Section: Intensification Of Internal Circulationmentioning

confidence: 99%

Slug Flow of Ionic Liquids in Capillary Microcontactors: Fluid Dynamic Intensification for Solvent Extraction

2013

View full text Add to dashboard Cite

For merging two facets of process intensification, namely, slug flow in microcapillaries and ionic liquid extraction, the fluid mechanic stability of organic-ionic liquid slug flow is mapped for [EMIM] [Alkyl-SO 4 ] and [Alkyl-MIM] [Ntf2] in 0.5-1.0 mm ID plastic capillaries. The choice of the ionic liquid solvent is restricted by physical properties. The internal circulation within ionic liquid slugs is found to be slower by a factor of 2-10 compared to aqueous slugs, but is accelerated by optimizing velocity, temperature, and wall material. Extraction of acetic acid from n-heptane with EMIM ethyl sulfate is proposed as a system to verify the contribution of internal circulation to mass transfer. In the long run, this research affirms the fluid dynamic feasibility of microcapillary slug-flow extraction with ionic liquids.

show abstract

Section: Intensification Of Internal Circulationmentioning

confidence: 99%

Slug Flow of Ionic Liquids in Capillary Microcontactors: Fluid Dynamic Intensification for Solvent Extraction

2013

View full text Add to dashboard Cite

show abstract

“…Moreover, a microreactor could operate under continuous flow operation and is easy to scale-up. Microreactor has been applied in many reactions and in both homogeneous [10][11][12][13] and heterogeneous [14][15][16] catalytic systems. Recently, He et al [17] investigated biphasic epoxidation reactions in a microreactor.…”

Section: Introductionmentioning

confidence: 99%

Epoxidation of methyl oleate in a TiO2 coated-wall capillary microreactor

Phimsen

Yamada

Tagawa

et al. 2017

Chemical Engineering Journal

View full text Add to dashboard Cite

“…In recent years, droplet‐based microfluidic technology has received growing research interests and rapid development. Microdroplet, as an individual reactor at the micrometer scale, has been employed in various areas, such as DNA hybridization analysis, cell activation, enzyme reaction, chemical analysis, and biotechnology . Rapid mixing is crucial for realizing the function of microfluidic devices.…”

Section: Introductionmentioning

confidence: 99%

Fluid mixing in droplet‐based microfluidics with T junction and convergent–divergent sinusoidal microchannels

Yang

Liu

et al. 2018

Electrophoresis

View full text Add to dashboard Cite

To explore and utilize the advantages of droplet-based microfluidics, hydrodynamics, and mixing process within droplets traveling though the T junction channel and convergent-divergent sinusoidal microchannels are studied by numerical simulations and experiments, respectively. In the T junction channel, the mixing efficiency is significantly influenced by the twirling effect, which controls the initial distributions of the mixture during the droplet formation stage. Therefore, the internal recirculating flow can create a convection mechanism, thus improving mixing. The twirling effect is noticeably influenced by the velocity of the continuous phase; in the sinusoidal channel, the Dean vortices and droplet deformation are induced by centrifugal force and alternative velocity gradient, thus enhancing the mixing efficiency. The best mixing occurred when the droplet size is comparable with the channel width. Finally, we propose a unique optimized structure, which includes a T junction inlet joined to a sinusoidal channel. In this structure, the mixing of fluids in the droplets follows two routes: One is the twirling effect and symmetric recirculation flow in the straight channel. The other is the asymmetric recirculation and droplet deformation in the winding and variable cross-section. Among the three structures, the optimized structure has the best mixing efficiency at the shortest mixing time (0.25 ms). The combination of the twirling effect, variable cross-section effect, and Dean vortices greatly intensifies the chaotic flow. This study provides the insight of the mixing process and may benefit the design and operations of droplet-based microfluidics.

show abstract

Suspension catalysis in a liquid–liquid capillary microreactor

Cited by 60 publications

References 21 publications

Slug Flow of Ionic Liquids in Capillary Microcontactors: Fluid Dynamic Intensification for Solvent Extraction

Slug Flow of Ionic Liquids in Capillary Microcontactors: Fluid Dynamic Intensification for Solvent Extraction

Epoxidation of methyl oleate in a TiO2 coated-wall capillary microreactor

Fluid mixing in droplet‐based microfluidics with T junction and convergent–divergent sinusoidal microchannels

Contact Info

Product

Resources

About