Mass transfer and pressure drop performance of turbulence promoters in electrochemical cells

Storck, A.; Hutin, D.

doi:10.1016/0013-4686(81)80014-x

Cited by 50 publications

(21 citation statements)

References 18 publications

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“…[7][8][9][10][11][12][13] Fluid control at electrodes is hence a pre-requisite to obtain electrochemical conversions as characterized and tailored for new electro-catalysts on a microscale. [14][15][16][17][18][19][20] Additive manufacturing serves as an example to create new electrodes and electrochemical reactors with functional geometries. [21][22][23][24][25] Below, we present additive manufactured flow through electrode mixers with yet unprecedented geometry and enhanced hydrodynamics.…”

Section: Introductionmentioning

confidence: 99%

3D‐Printed Electrodes with Improved Mass Transport Properties

et al. 2017

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Today's electrochemical reactor design is a less developed discipline as compared to electrocatalytic synthesis. Although catalysts show increasing conversion rates, they are often operated without measures for the reduction of concentration polarization effects. As a result, a stagnant boundary layer forms at the electrode‐electrolyte interface. This stagnant boundary layer presents an additional voltage drop and reduces the energy efficiency. It is generally accepted that this phenomenon is caused by a combination of fast electrode reactions and slow diffusion of the reacting species. Our earlier work demonstrated the potential of non‐conducting static mixers to reduce concentration polarization effects. However, there are few studies on conductive static mixers applied as electrodes. In this study, we present a new concept of additive manufactured flow through electrode mixers. Our electrode geometry combines a high surface area with mixing properties, diminishing concentration polarization effects of transport‐limited reactions. Mass transport properties of these conductive static mixers are evaluated in an additive manufactured electrochemical reactor under controlled conditions by applying the limiting‐current method.

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Section: Introductionmentioning

confidence: 99%

3D‐Printed Electrodes with Improved Mass Transport Properties

et al. 2017

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“…The reactor merits include simplicity in both design and operation, and uniformity of potential and current distribution. Attempts to improve its performance include increasing the reactor rate of mass transfer via the use of turbulence promoters [1][2][3] and gas bubbles [4,5] and increasing the reactor specific area by replacing the plate electrode with a porous electrode, such as particulate beds, stacked meshes and foams [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the great progress that has been made in the area of electrochemical reactor design and the emergence of a wide array of new electrochemical reactors that can efficiently handle diffusion-controlled reactions, such as the fixed bed, the fluidized bed, the rotating cylinder, etc., the modular parallel-plate flow electrochemical reactor is still the workhorse of the electrochemical industry [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Liquid‐Solid Mass Transfer Behavior of a Vertical Array of Closely Spaced Horizontal Tubes in Relation to Catalytic and Electrochemical Reactor Design

et al. 2009

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The rates of mass transfer at a vertical array of closely spaced horizontal tubes were measured by the limiting-current technique under single-phase flow, gas sparging and two-phase flow. . For two-phase flow, the gas flow was found to enhance the rate of array mass transfer by a factor ranging from 1.25 to 5.25, depending on Re g and Re. The enhancement ratio increases with decreasing Re and increasing Re g . For Re ≥ 2500, the rate of mass transfer approaches the value of single-phase flow, regardless of the value of Re g , which ranged from 7 to 41. The importance of the present geometry in building electrochemical and catalytic reactors, where exothermic liquid-solid diffusion-controlled reactions take place, is highlighted. The present geometry offers the advantage that the outer surface acts as a turbulence promoter while the inner surface acts as a heat exchanger.

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“…The rate of mass transfer of an electrode process can be enhanced via increased convection of the electrolyte, or by introducing turbulence promoters [1], gas bubbles [2,3], and solid particles [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The influence of glass spheres was measured by Leitel et al [4] and Roha [5] for a RDE (rotating disc electrode) and by Smith et al [6] for an electrode in a tube wall.…”

Section: Introductionmentioning

confidence: 99%

The influence of suspended particles on the mass transfer at a rotating disc electrode. Non-conducting particles

1990

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Mass transfer and pressure drop performance of turbulence promoters in electrochemical cells

Cited by 50 publications

References 18 publications

3D‐Printed Electrodes with Improved Mass Transport Properties

3D‐Printed Electrodes with Improved Mass Transport Properties

Liquid‐Solid Mass Transfer Behavior of a Vertical Array of Closely Spaced Horizontal Tubes in Relation to Catalytic and Electrochemical Reactor Design

The influence of suspended particles on the mass transfer at a rotating disc electrode. Non-conducting particles

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